[REF] base: Remove deprecated exceptions and osv

TL;DR: remember `osv` and `except_orm` ? You can forget about them.

* Deprecated `except_orm` dropped.
* `UserError` elevated as super type of all user-related
  errors.
* Unused `DeferredException` dropped.
* Unused `QWebException` dropped (real one is in `qweb.py`).
* `MailDeliveryException` made a python exception.
* `name` legacy exception attribute made an alias of the python standard
  `args[0]` attribute and deprecated.
* `value` legacy exception attribute dropped.
* `exception_type` RPC error response key dropped.
* Deprecated `osv` module dropped.
* `--osv-memory-age-limit` cli option made an alias of
  `--transient-age-limit` and deprecated.

The `odoo.exceptions.Warning` have long been a deprecated alias to
`UserError`. It is going to be removed in a future version but first we
explicitly deprecate it with a warning.

The `odoo.exceptions.DeferredException` was a very old internal
exception, it has been removed without deprecation notice as it is never
raised.

The `odoo.exceptions.except_orm` has been a deprecated exception type
with deprecation warning for 5 years, it has been removed in favor of
UserError which becomes the super class of all user-related errors.

The `odoo.base.models.ir_mail_server.MailDeliveryException` was
inheriting `except_orm`. As it is not related to a user error but is
more of a problem an admin much take care of, the exception has been
made a Python error.

The `exception_type` JSON key in RPC error responses was holding an
hardcoded value derived from the exception type. Its usage has been
dropped in favor of the `name` JSON key that holds the precise exception
name. Again as it was hardly used in the source code (beside the crash
manager) it has been dropped without deprecation warning.

Since we are here trying to clean odoo custom exceptions, we are also
deprecating the `name` exception attribute in favor of the more standard
`args[0]` attribute.

The `name` (along with `value`) were two attributes used to raise
`except_orm` exceptions before the introduction of `UserError`,
`AccessError` and related exceptions. The `name` attribute, at the time,
was holding the exception type/title. Nowadays it contains the error
message. The `value` attribute, at the time, was holding the error
message. Nowadays it is no more used.

The `osv` module contains very old deprecated aliases. There is no
simple way to log a deprecation warning for osv, osv_memory and
osv_abstract but as they have not been in use for ages, they have been
removed too. To be consistent, the `--osv-memory-age-limit` cli option
has been made a deprecated alias to the `--transient-age-limit`.

closes odoo/odoo#45723

Task: 2187728
Related: odoo/enterprise#9162
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

35 files changed, 148 insertions, 312 deletions

diff --git a/addons/account_facturx/models/account_move.py b/addons/account_facturx/models/account_move.py
index 68020ea6c90..92d3f6c225c 100644
--- a/addons/account_facturx/models/account_move.py
+++ b/addons/account_facturx/models/account_move.py
@@ -3,7 +3,7 @@
 from odoo import api, models, fields, tools, _
 from odoo.tools import DEFAULT_SERVER_DATE_FORMAT, float_repr
 from odoo.tests.common import Form
-from odoo.exceptions import UserError, except_orm
+from odoo.exceptions import UserError
 
 from datetime import datetime
 from lxml import etree
@@ -271,7 +271,7 @@ class AccountMove(models.Model):
                             self._import_facturx_invoice(tree)
                             self._remove_ocr_option()
                             buffer.close()
-            except except_orm as e:
+            except UserError as e:
                 raise e
             except Exception as e:
                 # Malformed pdf
diff --git a/addons/auth_signup/controllers/main.py b/addons/auth_signup/controllers/main.py
index 6fc0c58f919..82219be6930 100644
--- a/addons/auth_signup/controllers/main.py
+++ b/addons/auth_signup/controllers/main.py
@@ -46,7 +46,7 @@ class AuthSignupHome(Home):
                         template.sudo().send_mail(user_sudo.id, force_send=True)
                 return self.web_login(*args, **kw)
             except UserError as e:
-                qcontext['error'] = e.name or e.value
+                qcontext['error'] = e.args[0]
             except (SignupError, AssertionError) as e:
                 if request.env["res.users"].sudo().search([("login", "=", qcontext.get("login"))]):
                     qcontext["error"] = _("Another user is already registered using this email address.")
@@ -79,7 +79,7 @@ class AuthSignupHome(Home):
                     request.env['res.users'].sudo().reset_password(login)
                     qcontext['message'] = _("An email has been sent with credentials to reset your password")
             except UserError as e:
-                qcontext['error'] = e.name or e.value
+                qcontext['error'] = e.args[0]
             except SignupError:
                 qcontext['error'] = _("Could not reset your password")
                 _logger.exception('error when resetting password')
diff --git a/addons/delivery/models/delivery_grid.py b/addons/delivery/models/delivery_grid.py
index 5cef40ac210..17bc32a4f3b 100644
--- a/addons/delivery/models/delivery_grid.py
+++ b/addons/delivery/models/delivery_grid.py
@@ -58,7 +58,7 @@ class ProviderGrid(models.Model):
         except UserError as e:
             return {'success': False,
                     'price': 0.0,
-                    'error_message': e.name,
+                    'error_message': e.args[0],
                     'warning_message': False}
         if order.company_id.currency_id.id != order.pricelist_id.currency_id.id:
             price_unit = order.company_id.currency_id._convert(
diff --git a/addons/http_routing/models/ir_http.py b/addons/http_routing/models/ir_http.py
index c0fd4a46a19..064665d5d15 100644
--- a/addons/http_routing/models/ir_http.py
+++ b/addons/http_routing/models/ir_http.py
@@ -572,9 +572,8 @@ class IrHttp(models.AbstractModel):
             exception=exception,
             traceback=traceback.format_exc(),
         )
-        # only except_orm exceptions contain a message
-        if isinstance(exception, exceptions.except_orm):
-            values['error_message'] = exception.name
+        if isinstance(exception, exceptions.UserError):
+            values['error_message'] = exception.args[0]
             code = 400
             if isinstance(exception, exceptions.AccessError):
                 code = 403
diff --git a/addons/mail/models/mail_mail.py b/addons/mail/models/mail_mail.py
index 598c92d999f..49abe210f7a 100644
--- a/addons/mail/models/mail_mail.py
+++ b/addons/mail/models/mail_mail.py
@@ -416,10 +416,8 @@ class MailMail(models.Model):
                         if isinstance(e, UnicodeEncodeError):
                             value = "Invalid text: %s" % e.object
                         else:
-                            # get the args of the original error, wrap into a value and throw a MailDeliveryException
-                            # that is an except_orm, with name and value as arguments
                             value = '. '.join(e.args)
-                        raise MailDeliveryException(_("Mail Delivery Failed"), value)
+                        raise MailDeliveryException(value)
                     raise
 
             if auto_commit is True:
diff --git a/addons/mail/wizard/mail_template_preview.py b/addons/mail/wizard/mail_template_preview.py
index 7cedde9b5e5..03062beee74 100644
--- a/addons/mail/wizard/mail_template_preview.py
+++ b/addons/mail/wizard/mail_template_preview.py
@@ -73,7 +73,7 @@ class MailTemplatePreview(models.TransientModel):
             self.error_msg = False
         except UserError as user_error:
             self._set_mail_attributes()
-            self.error_msg = user_error.name
+            self.error_msg = user_error.args[0]
         finally:
             # Avoid to be change by a invalidate_cache call (in generate_mail), e.g. Quotation / Order report
             for key, value in copy_depends_values.items():
diff --git a/addons/mrp/tests/test_stock.py b/addons/mrp/tests/test_stock.py
index 2c03f3234c1..f2c012737c7 100644
--- a/addons/mrp/tests/test_stock.py
+++ b/addons/mrp/tests/test_stock.py
@@ -2,7 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from . import common
-from odoo.exceptions import except_orm
+from odoo.exceptions import UserError
 from odoo.tests import Form
 
 
@@ -150,7 +150,7 @@ class TestWarehouse(common.TestMrpCommon):
 
         # Scrap Product Wood without lot to check assert raise ?.
         scrap_id = self.env['stock.scrap'].with_context(active_model='mrp.production', active_id=production_3.id).create({'product_id': self.product_2.id, 'scrap_qty': 1.0, 'product_uom_id': self.product_2.uom_id.id, 'location_id': location_id, 'production_id': production_3.id})
-        with self.assertRaises(except_orm):
+        with self.assertRaises(UserError):
             scrap_id.do_scrap()
 
         # Scrap Product Wood with lot.
diff --git a/addons/payment_authorize/controllers/main.py b/addons/payment_authorize/controllers/main.py
index 49f919f4198..4417f0408bb 100644
--- a/addons/payment_authorize/controllers/main.py
+++ b/addons/payment_authorize/controllers/main.py
@@ -57,7 +57,7 @@ class AuthorizeController(http.Controller):
             }
         except UserError as e:
             return {
-                'error': e.name,
+                'error': e.args[0],
             }
 
         if not token:
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 12c488793d0..a318641fe92 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -1022,11 +1022,6 @@ exports.PosModel = Backbone.Model.extend({
             }).catch(function (reason){
                 var error = reason.message;
                 if(error.code === 200 ){    // Business Logic Error, not a connection problem
-                    //if warning do not need to display traceback!!
-                    if (error.data.exception_type == 'warning') {
-                        delete error.data.debug;
-                    }
-
                     // Hide error if already shown before ...
                     if ((!self.get('failed') || options.show_error) && !options.to_invoice) {
                         self.gui.show_popup('error-traceback',{
@@ -1071,13 +1066,6 @@ exports.PosModel = Backbone.Model.extend({
                 self.db.set_ids_removed_from_server(server_ids);
                 return server_ids;
             }).catch(function (reason){
-                var error = reason.message;
-                if(error.code === 200 ){    // Business Logic Error, not a connection problem
-                    //if warning do not need to display traceback!!
-                    if (error.data.exception_type == 'warning') {
-                        delete error.data.debug;
-                    }
-                }
                 self.gui.show_sync_error_popup();
                 console.error('Failed to remove orders:', server_ids);
             });
diff --git a/addons/test_mail/tests/test_mail_channel.py b/addons/test_mail/tests/test_mail_channel.py
index 3fb07f010ce..cb9d949c7ef 100644
--- a/addons/test_mail/tests/test_mail_channel.py
+++ b/addons/test_mail/tests/test_mail_channel.py
@@ -4,7 +4,7 @@
 from odoo.tests import tagged
 from odoo.addons.mail.tests.common import mail_new_test_user
 from odoo.addons.test_mail.tests.common import TestMailCommon
-from odoo.exceptions import AccessError, except_orm, ValidationError, UserError
+from odoo.exceptions import AccessError, ValidationError, UserError
 from odoo.tools import mute_logger, formataddr
 
 
@@ -39,10 +39,7 @@ class TestChannelAccessRights(TestMailCommon):
         self.group_public.with_user(self.user_public).read()
 
         # Read Pigs -> ko, restricted to employees
-        # TODO: Change the except_orm to Warning ( Because here it's call check_access_rule
-        # which still generate exception in except_orm.So we need to change all
-        # except_orm to warning in mail module.)
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             self.group_pigs.with_user(self.user_public).read()
 
         # Read a private group when being a member: ok
@@ -64,7 +61,6 @@ class TestChannelAccessRights(TestMailCommon):
     @mute_logger('odoo.addons.base.models.ir_model', 'odoo.models', 'odoo.models.unlink')
     def test_access_rights_groups(self):
         # Employee read employee-based group: ok
-        # TODO Change the except_orm to Warning
         self.group_pigs.with_user(self.user_employee).read()
 
         # Employee can create a group
@@ -77,7 +73,7 @@ class TestChannelAccessRights(TestMailCommon):
         self.group_pigs.with_user(self.user_employee).unlink()
 
         # Employee cannot read a private group
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             self.group_private.with_user(self.user_employee).read()
 
         # Employee cannot write on private
diff --git a/addons/test_mail/tests/test_mail_message.py b/addons/test_mail/tests/test_mail_message.py
index 1487597f56a..42c48aa960f 100644
--- a/addons/test_mail/tests/test_mail_message.py
+++ b/addons/test_mail/tests/test_mail_message.py
@@ -7,7 +7,7 @@ from unittest.mock import patch
 from odoo.addons.mail.tests.common import mail_new_test_user
 from odoo.addons.test_mail.tests.common import TestMailCommon
 from odoo.addons.test_mail.models.test_mail_models import MailTestSimple
-from odoo.exceptions import AccessError, except_orm
+from odoo.exceptions import AccessError
 from odoo.tools import mute_logger, formataddr
 from odoo.tests import tagged
 
@@ -244,15 +244,12 @@ class TestMessageAccess(TestMailCommon):
 
     @mute_logger('odoo.addons.base.models.ir_model', 'odoo.models')
     def test_mail_message_access_read_crash(self):
-        # TODO: Change the except_orm to Warning ( Because here it's call check_access_rule
-        # which still generate exception in except_orm.So we need to change all
-        # except_orm to warning in mail module.)
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             self.message.with_user(self.user_employee).read()
 
     @mute_logger('odoo.models')
     def test_mail_message_access_read_crash_portal(self):
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             self.message.with_user(self.user_portal).read(['body', 'message_type', 'subtype_id'])
 
     def test_mail_message_access_read_ok_portal(self):
@@ -302,17 +299,16 @@ class TestMessageAccess(TestMailCommon):
     @mute_logger('odoo.models')
     def test_mail_message_access_create_crash(self):
         # Do: Bert create a private message -> ko, no creation rights
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             self.env['mail.message'].with_user(self.user_employee).create({'model': 'mail.channel', 'res_id': self.group_private.id, 'body': 'Test'})
 
     @mute_logger('odoo.models')
     def test_mail_message_access_create_doc(self):
-        # TODO Change the except_orm to Warning
         Message = self.env['mail.message'].with_user(self.user_employee)
         # Do: Raoul creates a message on Jobs -> ok, write access to the related document
         Message.create({'model': 'mail.channel', 'res_id': self.group_public.id, 'body': 'Test'})
         # Do: Raoul creates a message on Priv -> ko, no write access to the related document
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             Message.create({'model': 'mail.channel', 'res_id': self.group_private.id, 'body': 'Test'})
 
     def test_mail_message_access_create_private(self):
@@ -338,11 +334,11 @@ class TestMessageAccess(TestMailCommon):
             body='<p>This is First Message</p>', subject='Subject',
             message_type='comment', subtype_xmlid='mail.mt_note')
         # portal user have no rights to read the message
-        with self.assertRaises(except_orm):
+        with self.assertRaises(AccessError):
             message.with_user(self.user_portal).read(['subject, body'])
 
         with patch.object(MailTestSimple, 'check_access_rights', return_value=True):
-            with self.assertRaises(except_orm):
+            with self.assertRaises(AccessError):
                 message.with_user(self.user_portal).read(['subject, body'])
 
             # parent message is accessible to references notification mail values
diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index b450663cd46..c68966af4bc 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -1198,12 +1198,12 @@ class Session(http.Controller):
         try:
             if request.env['res.users'].change_password(old_password, new_password):
                 return {'new_password':new_password}
-        except UserError as e:
-            msg = e.name
         except AccessDenied as e:
             msg = e.args[0]
             if msg == AccessDenied().args[0]:
                 msg = _('The old password you provided is incorrect, your password was not changed.')
+        except UserError as e:
+            msg = e.args[0]
         return {'title': _('Change Password'), 'error': msg}
 
     @http.route('/web/session/get_lang_list', type='json', auth="none")
diff --git a/addons/web/static/src/js/services/crash_manager.js b/addons/web/static/src/js/services/crash_manager.js
index 19db73e1da5..b653aaa1c8d 100644
--- a/addons/web/static/src/js/services/crash_manager.js
+++ b/addons/web/static/src/js/services/crash_manager.js
@@ -87,6 +87,13 @@ var CrashManager = AbstractService.extend({
         var self = this;
         active = true;
         this.isConnected = true;
+        this.odooExceptionTitleMap = {
+            'odoo.exceptions.AccessDenied': _lt("Access Denied"),
+            'odoo.exceptions.AccessError': _lt("Access Error"),
+            'odoo.exceptions.MissingError': _lt("Missing Record"),
+            'odoo.exceptions.UserError': _lt("User Error"),
+            'odoo.exceptions.ValidationError': _lt("Validation Error"),
+        };
 
         this._super.apply(this, arguments);
 
@@ -180,70 +187,35 @@ var CrashManager = AbstractService.extend({
     rpc_error: function(error) {
         // Some qunit tests produces errors before the DOM is set.
         // This produces an error loop as the modal/toast has no DOM to attach to.
-        if (!document.body) {
-            return;
-        }
-        var map_title = {
-            access_denied: _lt("Access Denied"),
-            access_error: _lt("Access Error"),
-            except_orm: _lt("Global Business Error"),
-            missing_error: _lt("Missing Record"),
-            user_error: _lt("User Error"),
-            validation_error: _lt("Validation Error"),
-            warning: _lt("Warning"),
-        };
-        if (!active) {
-            return;
-        }
-        if (this.connection_lost) {
-            return;
-        }
+        if (!document.body || !active || this.connection_lost) return;
+
+        // Connection lost error
         if (error.code === -32098) {
             this.handleLostConnection();
             return;
         }
+
+        // Special exception handlers, see crash_registry bellow
         var handler = core.crash_registry.get(error.data.name, true);
         if (handler) {
             new (handler)(this, error).display();
             return;
         }
-        if (_.has(map_title, error.data.exception_type)) {
-            if (error.data.exception_type === 'except_orm') {
-                if (error.data.arguments[1]) {
-                    error = _.extend({}, error,
-                                {
-                                    data: _.extend({}, error.data,
-                                        {
-                                            message: error.data.arguments[1],
-                                            title: error.data.arguments[0] !== 'Warning' ? error.data.arguments[0] : '',
-                                        })
-                                });
-                }
-                else {
-                    error = _.extend({}, error,
-                                {
-                                    data: _.extend({}, error.data,
-                                        {
-                                            message: error.data.arguments[0],
-                                            title:  '',
-                                        })
-                                });
-                }
-            }
-            else {
-                error = _.extend({}, error,
-                            {
-                                data: _.extend({}, error.data,
-                                    {
-                                        message: error.data.arguments[0],
-                                        title: map_title[error.data.exception_type] !== 'Warning' ? map_title[error.data.exception_type] : '',
-                                    })
-                            });
-            }
+
+        // Odoo custom exception: UserError, AccessError, ...
+        if (_.has(this.odooExceptionTitleMap, error.data.name)) {
+            error = _.extend({}, error, {
+                data: _.extend({}, error.data, {
+                    message: error.data.arguments[0],
+                    title: this.odooExceptionTitleMap[error.data.name],
+                }),
+            });
             this.show_warning(error);
-        } else {
-            this.show_error(error);
+            return;
         }
+
+        // Any other Python exception
+        this.show_error(error);
     },
     show_warning: function (error, options) {
         if (!active) {
diff --git a/addons/web/static/tests/chrome/action_manager_tests.js b/addons/web/static/tests/chrome/action_manager_tests.js
index 5af731abf81..96835f8eab5 100644
--- a/addons/web/static/tests/chrome/action_manager_tests.js
+++ b/addons/web/static/tests/chrome/action_manager_tests.js
@@ -2277,7 +2277,6 @@ QUnit.module('ActionManager', {
                     params.error({
                         data: {
                             name: 'error',
-                            exception_type: 'warning',
                             arguments: ['could not download file'],
                         }
                     });
diff --git a/addons/web_editor/static/src/js/editor/rte.js b/addons/web_editor/static/src/js/editor/rte.js
index cbce901c48d..feb28100854 100644
--- a/addons/web_editor/static/src/js/editor/rte.js
+++ b/addons/web_editor/static/src/js/editor/rte.js
@@ -510,7 +510,7 @@ var RTEWidget = Widget.extend({
                     // new rejection with all relevant info
                     var id = _.uniqueId('carlos_danger_');
                     $el.addClass('o_dirty oe_carlos_danger ' + id);
-                    var html = (response.message.data.exception_type === 'except_osv');
+                    var html = Boolean(response.data.name);
                     if (html) {
                         var msg = $('<div/>', {text: response.message.data.message}).html();
                         var data = msg.substring(3, msg.length  -2).split(/', u'/);
diff --git a/addons/website/models/ir_http.py b/addons/website/models/ir_http.py
index ae68a21e174..2e6aa532f88 100644
--- a/addons/website/models/ir_http.py
+++ b/addons/website/models/ir_http.py
@@ -299,7 +299,7 @@ class Http(models.AbstractModel):
             try:
                 # exception.name might be int, string
                 exception_template = int(exception.name)
-            except:
+            except ValueError:
                 exception_template = exception.name
             view = View._view_obj(exception_template)
             if exception.html and exception.html in view.arch:
diff --git a/addons/website_slides/controllers/main.py b/addons/website_slides/controllers/main.py
index 8691313dc88..25d53bce316 100644
--- a/addons/website_slides/controllers/main.py
+++ b/addons/website_slides/controllers/main.py
@@ -602,9 +602,9 @@ class WebsiteSlides(WebsiteProfile):
             channel = request.env['slide.channel'].browse(int(channel_id))
             can_upload = channel.can_upload
             can_publish = channel.can_publish
-        except (UserError, AccessError) as e:
+        except UserError as e:
             _logger.error(e)
-            return {'error': e.name}
+            return {'error': e.args[0]}
         else:
             if not can_upload or not can_publish:
                 return {'error': _('You cannot add tags to this course.')}
@@ -1013,9 +1013,9 @@ class WebsiteSlides(WebsiteProfile):
             channel = request.env['slide.channel'].browse(values['channel_id'])
             can_upload = channel.can_upload
             can_publish = channel.can_publish
-        except (UserError, AccessError) as e:
+        except UserError as e:
             _logger.error(e)
-            return {'error': e.name}
+            return {'error': e.args[0]}
         else:
             if not can_upload:
                 return {'error': _('You cannot upload on this channel.')}
@@ -1042,9 +1042,9 @@ class WebsiteSlides(WebsiteProfile):
             values['user_id'] = request.env.uid
             values['is_published'] = values.get('is_published', False) and can_publish
             slide = request.env['slide.slide'].sudo().create(values)
-        except (UserError, AccessError) as e:
+        except UserError as e:
             _logger.error(e)
-            return {'error': e.name}
+            return {'error': e.args[0]}
         except Exception as e:
             _logger.error(e)
             return {'error': _('Internal server error, please try again later or contact administrator.\nHere is the error message: %s') % e}
diff --git a/odoo/addons/base/models/ir_actions.py b/odoo/addons/base/models/ir_actions.py
index a3c7c4857ca..5d207e80591 100644
--- a/odoo/addons/base/models/ir_actions.py
+++ b/odoo/addons/base/models/ir_actions.py
@@ -508,6 +508,7 @@ class IrActionsServer(models.Model):
             'model': model,
             # Exceptions
             'Warning': odoo.exceptions.Warning,
+            'UserError': odoo.exceptions.UserError,
             # record
             'record': record,
             'records': records,
diff --git a/odoo/addons/base/models/ir_mail_server.py b/odoo/addons/base/models/ir_mail_server.py
index 8c5399236c7..8d0bf2a21f1 100644
--- a/odoo/addons/base/models/ir_mail_server.py
+++ b/odoo/addons/base/models/ir_mail_server.py
@@ -15,7 +15,7 @@ import threading
 import html2text
 
 from odoo import api, fields, models, tools, _
-from odoo.exceptions import except_orm, UserError
+from odoo.exceptions import UserError
 from odoo.tools import ustr, pycompat
 
 _logger = logging.getLogger(__name__)
@@ -24,10 +24,9 @@ _test_logger = logging.getLogger('odoo.tests')
 SMTP_TIMEOUT = 60
 
 
-class MailDeliveryException(except_orm):
+class MailDeliveryException(Exception):
     """Specific exception subclass for mail delivery errors"""
-    def __init__(self, name, value):
-        super(MailDeliveryException, self).__init__(name, value)
+
 
 # Python 3: patch SMTP's internal printer/debugger
 def _print_debug(self, *args):
diff --git a/odoo/addons/base/tests/test_ir_filters.py b/odoo/addons/base/tests/test_ir_filters.py
index cb4b39ff8e2..59c4a39c608 100644
--- a/odoo/addons/base/tests/test_ir_filters.py
+++ b/odoo/addons/base/tests/test_ir_filters.py
@@ -222,7 +222,7 @@ class TestGlobalDefaults(FiltersCase):
         )
 
         Filters = self.env['ir.filters'].with_user(self.USER_ID)
-        with self.assertRaises(exceptions.Warning):
+        with self.assertRaises(exceptions.UserError):
             Filters.create_or_replace({
                 'name': 'c',
                 'model_id': 'ir.filters',
@@ -242,7 +242,7 @@ class TestGlobalDefaults(FiltersCase):
         )
 
         Filters = self.env['ir.filters'].with_user(self.USER_ID)
-        with self.assertRaises(exceptions.Warning):
+        with self.assertRaises(exceptions.UserError):
             Filters.create_or_replace({
                 'name': 'a',
                 'model_id': 'ir.filters',
diff --git a/odoo/addons/base/tests/test_res_config.py b/odoo/addons/base/tests/test_res_config.py
index 70d1aed99b8..552d8759715 100644
--- a/odoo/addons/base/tests/test_res_config.py
+++ b/odoo/addons/base/tests/test_res_config.py
@@ -78,7 +78,7 @@ class TestResConfig(TransactionCase):
         res = self.ResConfig.get_config_warning(self.error_msg_wo_menu)
 
         # Check type
-        self.assertIsInstance(res, exceptions.Warning)
+        self.assertIsInstance(res, exceptions.UserError)
 
         # Check returned value
         self.assertEqual(res.args[0], self.expected_final_error_msg_wo_menu)
diff --git a/odoo/addons/test_exceptions/models.py b/odoo/addons/test_exceptions/models.py
index 7028ddda128..cb218aaac32 100644
--- a/odoo/addons/test_exceptions/models.py
+++ b/odoo/addons/test_exceptions/models.py
@@ -2,7 +2,6 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 import odoo.exceptions
-import odoo.osv.osv
 from odoo import models, api
 from odoo.tools.safe_eval import safe_eval
 
@@ -14,17 +13,6 @@ class m(models.Model):
     _name = 'test.exceptions.model'
     _description = 'Test Exception Model'
 
-    def generate_except_osv(self):
-        # title is ignored in the new (6.1) exceptions
-        raise odoo.osv.osv.except_osv('title', 'description')
-
-    def generate_except_orm(self):
-        # title is ignored in the new (6.1) exceptions
-        raise odoo.exceptions.except_orm('title', 'description')
-
-    def generate_warning(self):
-        raise odoo.exceptions.Warning('description')
-
     def generate_redirect_warning(self):
         action = self.env.ref('test_exceptions.action_test_exceptions')
         raise odoo.exceptions.RedirectWarning('description', action.id, 'Go to the redirection')
@@ -50,15 +38,6 @@ class m(models.Model):
     def generate_validation_error(self):
         raise odoo.exceptions.ValidationError('description')
 
-    def generate_except_osv_safe_eval(self):
-        self.generate_safe_eval(self.generate_except_osv)
-
-    def generate_except_orm_safe_eval(self):
-        self.generate_safe_eval(self.generate_except_orm)
-
-    def generate_warning_safe_eval(self):
-        self.generate_safe_eval(self.generate_warning)
-
     def generate_redirect_warning_safe_eval(self):
         self.generate_safe_eval(self.generate_redirect_warning)
 
diff --git a/odoo/addons/test_exceptions/view.xml b/odoo/addons/test_exceptions/view.xml
index 0e8f96a7c91..30f19e19b58 100644
--- a/odoo/addons/test_exceptions/view.xml
+++ b/odoo/addons/test_exceptions/view.xml
@@ -11,18 +11,6 @@
                     <separator/>
                     <group>
                         <div>
-                            <button name="generate_except_osv" string="except_osv" type="object" icon="fa-refresh text-primary" />
-                            <label for="generate_except_osv" string="Warning-description"/>
-                        </div>
-                        <div>
-                            <button name="generate_except_orm" string="except_orm" type="object" icon="fa-refresh text-primary"/>
-                            <label for="generate_except_orm" string="Warning-description"/>
-                        </div>
-                        <div>
-                            <button name="generate_warning" string="Warning" type="object" icon="fa-refresh text-primary"/>
-                            <label for="generate_warning" string="Warning-description"/>
-                        </div>
-                        <div>
                             <button name="generate_redirect_warning" string="RedirectWarning" type="object" icon="fa-refresh text-primary"/>
                             <label for="generate_redirect_warning" string="Warning-description-redirection button"/>
                         </div>
@@ -56,18 +44,6 @@
                         </div>
 
                         <div>
-                            <button name="generate_except_osv_safe_eval" string="except_osv*" type="object" icon="fa-refresh text-primary"/>
-                            <label for="generate_except_osv_safe_eval" string="Warning-description"/>
-                        </div>
-                        <div>
-                            <button name="generate_except_orm_safe_eval" string="except_orm*" type="object" icon="fa-refresh text-primary"/>
-                            <label for="generate_except_orm_safe_eval" string="Warning-description"/>
-                        </div>
-                        <div>
-                            <button name="generate_warning_safe_eval" string="Warning*" type="object" icon="fa-refresh text-primary"/>
-                            <label for="generate_warning_safe_eval" string="Warning-description"/>
-                        </div>
-                        <div>
                             <button name="generate_redirect_warning_safe_eval" string="RedirectWarning*" type="object" icon="fa-refresh text-primary"/>
                             <label for="generate_redirect_warning_safe_eval" string="Warning-description-redirection button" class="oe_inline"/>
                         </div>
diff --git a/odoo/addons/test_new_api/tests/test_new_fields.py b/odoo/addons/test_new_api/tests/test_new_fields.py
index 97d1cb2dacc..9f895ba5732 100644
--- a/odoo/addons/test_new_api/tests/test_new_fields.py
+++ b/odoo/addons/test_new_api/tests/test_new_fields.py
@@ -1539,7 +1539,7 @@ class TestFields(TransactionCaseWithUserDemo):
                 'name': 'Test without attachment',
                 'image_wo_attachment': SVG.decode("utf-8"),
             })
-        self.assertEqual(e.exception.name, 'Only admins can upload SVG files.')
+        self.assertEqual(e.exception.args[0], 'Only admins can upload SVG files.')
 
     def test_90_binary_svg(self):
         from odoo.addons.base.tests.test_mimetypes import SVG
diff --git a/odoo/exceptions.py b/odoo/exceptions.py
index 93a0a84e20f..8400194e75a 100644
--- a/odoo/exceptions.py
+++ b/odoo/exceptions.py
@@ -13,58 +13,64 @@ treated as a 'Server error'.
 """
 
 import logging
-from inspect import currentframe
-from .tools.func import frame_codeinfo
+import warnings
 
 _logger = logging.getLogger(__name__)
 
 
-# kept for backward compatibility
-class except_orm(Exception):
-    def __init__(self, name, value=None):
-        if type(self) == except_orm:
-            caller = frame_codeinfo(currentframe(), 1)
-            _logger.warning('except_orm is deprecated. Please use specific exceptions like UserError or AccessError. Caller: %s:%s', *caller)
-        self.name = name
-        self.value = value
-        self.args = (name, value)
-
-    def __str__(self):
-        if not self.value:
-            return str(self.name)
-        else:
-            return super().__str__()
-
-
-class UserError(except_orm):
+class UserError(Exception):
     """Generic error managed by the client.
 
     Typically when the user tries to do something that has no sense given the current
-    state of a record.
+    state of a record. Semantically comparable to the generic 400 HTTP status codes.
     """
-    def __init__(self, msg):
-        super(UserError, self).__init__(msg, value='')
+
+    def __init__(self, message):
+        """
+        :param message: exception message and frontend modal content
+        """
+        super().__init__(message)
+
+    @property
+    def name(self):
+        warnings.warn(
+            "UserError attribute 'name' is a deprecated alias to args[0]",
+            DeprecationWarning)
+        return self.args[0]
 
 
 # deprecated due to collision with builtins, kept for compatibility
-Warning = UserError
+class Warning(UserError):
+    def __init__(self, *args, **kwargs):
+        warnings.warn(
+            "Warning is a deprecated alias to UserError and is going to be "
+            "removed in a future version.",
+            DeprecationWarning)
+        super().__init__(*args, **kwargs)
 
 
 class RedirectWarning(Exception):
     """ Warning with a possibility to redirect the user instead of simply
     displaying the warning message.
 
+    :param str message: exception message and frontend modal content
     :param int action_id: id of the action where to perform the redirection
     :param str button_text: text to put on the button that will trigger
         the redirection.
     """
-    # using this RedirectWarning won't crash if used as an except_orm
+    def __init__(self, message, action, button_text):
+        super().__init__(message, action, button_text)
+
+    # using this RedirectWarning won't crash if used as an UserError
     @property
     def name(self):
+        warnings.warn(
+            "RedirectWarning attribute 'name' is a deprecated alias to args[0]",
+            DeprecationWarning)
         return self.args[0]
 
 
-class AccessDenied(Exception):
+class AccessDenied(UserError):
     """Login/password error.
 
     .. note::
@@ -76,14 +82,14 @@ class AccessDenied(Exception):
         When you try to log with a wrong password.
     """
 
-    def __init__(self, message='Access denied'):
-        super(AccessDenied, self).__init__(message)
+    def __init__(self, message="Access Denied"):
+        super().__init__(message)
         self.with_traceback(None)
         self.__cause__ = None
         self.traceback = ('', '', '')
 
 
-class AccessError(except_orm):
+class AccessError(UserError):
     """Access rights error.
 
     .. admonition:: Example
@@ -91,11 +97,8 @@ class AccessError(except_orm):
         When you try to read a record that you are not allowed to.
     """
 
-    def __init__(self, msg):
-        super(AccessError, self).__init__(msg)
-
 
-class CacheMiss(except_orm, KeyError):
+class CacheMiss(KeyError):
     """Missing value(s) in cache.
 
     .. admonition:: Example
@@ -104,10 +107,10 @@ class CacheMiss(except_orm, KeyError):
     """
 
     def __init__(self, record, field):
-        super(CacheMiss, self).__init__("%r.%s" % (record, field.name))
+        super().__init__("%r.%s" % (record, field.name))
 
 
-class MissingError(except_orm):
+class MissingError(UserError):
     """Missing record(s).
 
     .. admonition:: Example
@@ -115,36 +118,11 @@ class MissingError(except_orm):
         When you try to write on a deleted record.
     """
 
-    def __init__(self, msg):
-        super(MissingError, self).__init__(msg)
 
-
-class ValidationError(except_orm):
+class ValidationError(UserError):
     """Violation of python constraints.
 
     .. admonition:: Example
 
         When you try to create a new user with a login which already exist in the db.
     """
-
-    def __init__(self, msg):
-        super(ValidationError, self).__init__(msg)
-
-
-class DeferredException(Exception):
-    """ Exception object holding a traceback for asynchronous reporting.
-
-    Some RPC calls (database creation and report generation) happen with
-    an initial request followed by multiple, polling requests. This class
-    is used to store the possible exception occuring in the thread serving
-    the first request, and is then sent to a polling request.
-
-    ('Traceback' is misleading, this is really a exc_info() triple.)
-    """
-    def __init__(self, msg, tb):
-        self.message = msg
-        self.traceback = tb
-
-
-class QWebException(Exception):
-    pass
diff --git a/odoo/http.py b/odoo/http.py
index 085eaa29240..2b3472ddc9d 100644
--- a/odoo/http.py
+++ b/odoo/http.py
@@ -106,9 +106,8 @@ def replace_request_password(args):
 # don't trigger debugger for those exceptions, they carry user-facing warnings
 # and indications, they're not necessarily indicative of anything being
 # *broken*
-NO_POSTMORTEM = (odoo.exceptions.except_orm,
-                 odoo.exceptions.AccessDenied,
-                 odoo.exceptions.Warning,
+NO_POSTMORTEM = (odoo.exceptions.AccessDenied,
+                 odoo.exceptions.UserError,
                  odoo.exceptions.RedirectWarning)
 
 
@@ -639,8 +638,8 @@ class JsonRequest(WebRequest):
             if not isinstance(exception, SessionExpiredException):
                 if exception.args and exception.args[0] == "bus.Bus not available in test mode":
                     _logger.info(exception)
-                elif isinstance(exception, (odoo.exceptions.Warning, odoo.exceptions.except_orm,
-                                          werkzeug.exceptions.NotFound)):
+                elif isinstance(exception, (odoo.exceptions.UserError,
+                                            werkzeug.exceptions.NotFound)):
                     _logger.warning(exception)
                 else:
                     _logger.exception("Exception during JSON request handling.")
@@ -696,31 +695,13 @@ class JsonRequest(WebRequest):
 
 
 def serialize_exception(e):
-    tmp = {
+    return {
         "name": type(e).__module__ + "." + type(e).__name__ if type(e).__module__ else type(e).__name__,
         "debug": traceback.format_exc(),
         "message": ustr(e),
         "arguments": e.args,
-        "exception_type": "internal_error",
         "context": getattr(e, 'context', {}),
     }
-    if isinstance(e, odoo.exceptions.UserError):
-        tmp["exception_type"] = "user_error"
-    elif isinstance(e, odoo.exceptions.Warning):
-        tmp["exception_type"] = "warning"
-    elif isinstance(e, odoo.exceptions.RedirectWarning):
-        tmp["exception_type"] = "warning"
-    elif isinstance(e, odoo.exceptions.AccessError):
-        tmp["exception_type"] = "access_error"
-    elif isinstance(e, odoo.exceptions.MissingError):
-        tmp["exception_type"] = "missing_error"
-    elif isinstance(e, odoo.exceptions.AccessDenied):
-        tmp["exception_type"] = "access_denied"
-    elif isinstance(e, odoo.exceptions.ValidationError):
-        tmp["exception_type"] = "validation_error"
-    elif isinstance(e, odoo.exceptions.except_orm):
-        tmp["exception_type"] = "except_orm"
-    return tmp
 
 
 class HttpRequest(WebRequest):
diff --git a/odoo/models.py b/odoo/models.py
index 67aacc33417..927263f2025 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -342,7 +342,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
     # default values for _transient_vacuum()
     _transient_check_count = 0
     _transient_max_count = lazy_classproperty(lambda _: config.get('osv_memory_count_limit'))
-    _transient_max_hours = lazy_classproperty(lambda _: config.get('osv_memory_age_limit'))
+    _transient_max_hours = lazy_classproperty(lambda _: config.get('transient_age_limit'))
 
     CONCURRENCY_CHECK_FIELD = '__last_update'
 
diff --git a/odoo/osv/__init__.py b/odoo/osv/__init__.py
index 9399e4410fb..2903e8d9121 100644
--- a/odoo/osv/__init__.py
+++ b/odoo/osv/__init__.py
@@ -1,4 +1,3 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from . import osv
diff --git a/odoo/osv/osv.py b/odoo/osv/osv.py
deleted file mode 100644
index dc23494450b..00000000000
--- a/odoo/osv/osv.py
+++ /dev/null
@@ -1,14 +0,0 @@
-# -*- coding: utf-8 -*-
-# Part of Odoo. See LICENSE file for full copyright and licensing details.
-
-from ..exceptions import except_orm
-from ..models import Model, TransientModel, AbstractModel
-
-# Deprecated, kept for backward compatibility.
-# openerp.exceptions.Warning should be used instead.
-except_osv = except_orm
-
-# Deprecated, kept for backward compatibility.
-osv = Model
-osv_memory = TransientModel
-osv_abstract = AbstractModel # ;-)
diff --git a/odoo/service/model.py b/odoo/service/model.py
index 82a32c2cfc1..731007abd23 100644
--- a/odoo/service/model.py
+++ b/odoo/service/model.py
@@ -9,7 +9,7 @@ import threading
 import time
 
 import odoo
-from odoo.exceptions import UserError, ValidationError, QWebException
+from odoo.exceptions import UserError, ValidationError
 from odoo.models import check_method_name
 from odoo.tools.translate import translate, translate_sql_constraint
 from odoo.tools.translate import _
@@ -91,13 +91,7 @@ def check(f):
                 if odoo.registry(dbname)._init and not odoo.tools.config['test_enable']:
                     raise odoo.exceptions.Warning('Currently, this database is not fully loaded and can not be used.')
                 return f(dbname, *args, **kwargs)
-            except (OperationalError, QWebException) as e:
-                if isinstance(e, QWebException):
-                    cause = e.qweb.get('cause')
-                    if isinstance(cause, OperationalError):
-                        e = cause
-                    else:
-                        raise
+            except OperationalError as e:
                 # Automatically retry the typical transaction serialization errors
                 if e.pgcode not in PG_CONCURRENCY_ERRORS_TO_RETRY:
                     raise
diff --git a/odoo/service/wsgi_server.py b/odoo/service/wsgi_server.py
index 65ca8806df9..c2712203804 100644
--- a/odoo/service/wsgi_server.py
+++ b/odoo/service/wsgi_server.py
@@ -35,22 +35,14 @@ RPC_FAULT_CODE_ACCESS_DENIED = 3
 RPC_FAULT_CODE_ACCESS_ERROR = 4
 
 def xmlrpc_handle_exception_int(e):
-    if isinstance(e, odoo.exceptions.UserError):
-        fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, odoo.tools.ustr(e.name))
-    elif isinstance(e, odoo.exceptions.RedirectWarning):
+    if isinstance(e, odoo.exceptions.RedirectWarning):
         fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, str(e))
-    elif isinstance(e, odoo.exceptions.MissingError):
-        fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, str(e))
-    elif isinstance (e, odoo.exceptions.AccessError):
+    elif isinstance(e, odoo.exceptions.AccessError):
         fault = xmlrpclib.Fault(RPC_FAULT_CODE_ACCESS_ERROR, str(e))
     elif isinstance(e, odoo.exceptions.AccessDenied):
         fault = xmlrpclib.Fault(RPC_FAULT_CODE_ACCESS_DENIED, str(e))
-    elif isinstance(e, odoo.exceptions.DeferredException):
-        info = e.traceback
-        # Which one is the best ?
-        formatted_info = "".join(traceback.format_exception(*info))
-        #formatted_info = odoo.tools.exception_to_unicode(e) + '\n' + info
-        fault = xmlrpclib.Fault(RPC_FAULT_CODE_APPLICATION_ERROR, formatted_info)
+    elif isinstance(e, odoo.exceptions.UserError):
+        fault = xmlrpclib.Fault(RPC_FAULT_CODE_WARNING, str(e))
     else:
         info = sys.exc_info()
         # Which one is the best ?
@@ -61,9 +53,7 @@ def xmlrpc_handle_exception_int(e):
     return xmlrpclib.dumps(fault, allow_none=None)
 
 def xmlrpc_handle_exception_string(e):
-    if isinstance(e, odoo.exceptions.UserError):
-        fault = xmlrpclib.Fault('warning -- %s\n\n%s' % (e.name, e.value), '')
-    elif isinstance(e, odoo.exceptions.RedirectWarning):
+    if isinstance(e, odoo.exceptions.RedirectWarning):
         fault = xmlrpclib.Fault('warning -- Warning\n\n' + str(e), '')
     elif isinstance(e, odoo.exceptions.MissingError):
         fault = xmlrpclib.Fault('warning -- MissingError\n\n' + str(e), '')
@@ -71,10 +61,8 @@ def xmlrpc_handle_exception_string(e):
         fault = xmlrpclib.Fault('warning -- AccessError\n\n' + str(e), '')
     elif isinstance(e, odoo.exceptions.AccessDenied):
         fault = xmlrpclib.Fault('AccessDenied', str(e))
-    elif isinstance(e, odoo.exceptions.DeferredException):
-        info = e.traceback
-        formatted_info = "".join(traceback.format_exception(*info))
-        fault = xmlrpclib.Fault(odoo.tools.ustr(e), formatted_info)
+    elif isinstance(e, odoo.exceptions.UserError):
+        fault = xmlrpclib.Fault('warning -- UserError\n\n' + str(e), '')
     #InternalError
     else:
         info = sys.exc_info()
diff --git a/odoo/tools/config.py b/odoo/tools/config.py
index c9f6e2556c3..a50e3a8460c 100644
--- a/odoo/tools/config.py
+++ b/odoo/tools/config.py
@@ -9,6 +9,7 @@ import glob
 import os
 import sys
 import tempfile
+import warnings
 import odoo
 from os.path import expandvars, expanduser, abspath, realpath
 from .. import release, conf, loglevels
@@ -280,10 +281,12 @@ class configmanager(object):
                          help="Force a limit on the maximum number of records kept in the virtual "
                               "osv_memory tables. The default is False, which means no count-based limit.",
                          type="int")
-        group.add_option("--osv-memory-age-limit", dest="osv_memory_age_limit", my_default=1.0,
-                         help="Force a limit on the maximum age of records kept in the virtual "
-                              "osv_memory tables. This is a decimal value expressed in hours, "
-                              "and the default is 1 hour.",
+        group.add_option("--transient-age-limit", dest="transient_age_limit", my_default=1.0,
+                         help="Time limit (decimal value in hours) records created with a "
+                              "TransientModel (mosly wizard) are kept in the database. Default to 1 hour.",
+                         type="float")
+        group.add_option("--osv-memory-age-limit", dest="osv_memory_age_limit", my_default=False,
+                         help="Deprecated alias to the transient-age-limit option",
                          type="float")
         group.add_option("--max-cron-threads", dest="max_cron_threads", my_default=2,
                          help="Maximum number of threads processing concurrently cron jobs (default 2).",
@@ -350,6 +353,7 @@ class configmanager(object):
         """
         opt = self._parse_config(args)
         odoo.netsvc.init_logger()
+        self._warn_deprecated_options()
         odoo.modules.module.initialize_sys_path()
         return opt
 
@@ -382,6 +386,10 @@ class configmanager(object):
             "The config file '%s' selected with -c/--config doesn't exist or is not readable, "\
             "use -s/--save if you want to generate it"% opt.config)
 
+        die(bool(opt.osv_memory_age_limit) and bool(opt.transient_memory_age_limit),
+            "the osv-memory-count-limit option cannot be used with the "
+            "transient-age-limit option, please only use the latter.")
+
         # place/search the config file on Win32 near the server installation
         # (../etc from the server)
         # if the server is run by an unprivileged user, he has to specify location of a config file where he has the rights to write,
@@ -448,7 +456,7 @@ class configmanager(object):
             'stop_after_init', 'without_demo', 'http_enable', 'syslog',
             'list_db', 'proxy_mode',
             'test_file', 'test_tags',
-            'osv_memory_count_limit', 'osv_memory_age_limit', 'max_cron_threads', 'unaccent',
+            'osv_memory_count_limit', 'osv_memory_age_limit', 'transient_age_limit', 'max_cron_threads', 'unaccent',
             'data_dir',
             'server_wide_modules',
         ]
@@ -525,9 +533,16 @@ class configmanager(object):
         conf.server_wide_modules = [
             m.strip() for m in self.options['server_wide_modules'].split(',') if m.strip()
         ]
-
         return opt
 
+    def _warn_deprecated_options(self):
+        if self.options['osv_memory_age_limit']:
+            warnings.warn(
+                "The osv-memory-age-limit is a deprecated alias to "
+                "the transient-age-limit option, please use the latter.",
+                DeprecationWarning)
+            self.options['transient_age_limit'] = self.options.pop('osv_memory_age_limit')
+
     def _is_addons_path(self, path):
         from odoo.modules.module import MANIFEST_NAMES
         for f in os.listdir(path):
diff --git a/odoo/tools/safe_eval.py b/odoo/tools/safe_eval.py
index 460eccccae8..262928874e4 100644
--- a/odoo/tools/safe_eval.py
+++ b/odoo/tools/safe_eval.py
@@ -322,16 +322,10 @@ def safe_eval(expr, globals_dict=None, locals_dict=None, mode="eval", nocopy=Fal
     c = test_expr(expr, _SAFE_OPCODES, mode=mode)
     try:
         return unsafe_eval(c, globals_dict, locals_dict)
-    except odoo.exceptions.except_orm:
-        raise
-    except odoo.exceptions.Warning:
+    except odoo.exceptions.UserError:
         raise
     except odoo.exceptions.RedirectWarning:
         raise
-    except odoo.exceptions.AccessDenied:
-        raise
-    except odoo.exceptions.AccessError:
-        raise
     except werkzeug.exceptions.HTTPException:
         raise
     except odoo.http.AuthenticationError:
@@ -340,8 +334,6 @@ def safe_eval(expr, globals_dict=None, locals_dict=None, mode="eval", nocopy=Fal
         # Do not hide PostgreSQL low-level exceptions, to let the auto-replay
         # of serialized transactions work its magic
         raise
-    except odoo.exceptions.MissingError:
-        raise
     except ZeroDivisionError:
         raise
     except Exception as e:
diff --git a/odoo/tools/test-config-values-00.conf b/odoo/tools/test-config-values-00.conf
index 1d0bd7419fe..bcf90301708 100644
--- a/odoo/tools/test-config-values-00.conf
+++ b/odoo/tools/test-config-values-00.conf
@@ -1,3 +1,3 @@
 [options]
 osv_memory_count_limit = 5
-osv_memory_age_limit = 3.4
+transient_age_limit = 3.4
diff --git a/odoo/tools/test_config.py b/odoo/tools/test_config.py
index 045bcaaa9c7..2e05d288f4f 100644
--- a/odoo/tools/test_config.py
+++ b/odoo/tools/test_config.py
@@ -18,7 +18,7 @@ config_file_00 = os.path.join(os.path.dirname(__file__),'test-config-values-00.c
 conf = config.configmanager()
 conf.parse_config()
 
-assert conf['osv_memory_age_limit'] == 1.0
+assert conf['transient_age_limit'] == 1.0
 assert os.path.join(conf['root_path'], 'addons') == conf['addons_path']
 
 # 2. No config file, some command-line arguments
@@ -26,9 +26,9 @@ assert os.path.join(conf['root_path'], 'addons') == conf['addons_path']
 conf = config.configmanager()
 # mess with the optparse.Option definition to allow an invalid path
 conf.casts['addons_path'].action = 'store'
-conf.parse_config(['--addons-path=/xyz/dont-exist', '--osv-memory-age-limit=2.3'])
+conf.parse_config(['--addons-path=/xyz/dont-exist', '--transient-age-limit=2.3'])
 
-assert conf['osv_memory_age_limit'] == 2.3
+assert conf['transient_age_limit'] == 2.3
 assert conf['addons_path'] == '/xyz/dont-exist'
 
 # 3. Config file, no command-line arguments
@@ -36,11 +36,11 @@ assert conf['addons_path'] == '/xyz/dont-exist'
 conf = config.configmanager()
 conf.parse_config(['-c', config_file_00])
 
-assert conf['osv_memory_age_limit'] == 3.4
+assert conf['transient_age_limit'] == 3.4
 
 # 4. Config file, and command-line arguments
 
 conf = config.configmanager()
-conf.parse_config(['-c', config_file_00, '--osv-memory-age-limit=2.3'])
+conf.parse_config(['-c', config_file_00, '--transient-age-limit=2.3'])
 
-assert conf['osv_memory_age_limit'] == 2.3
+assert conf['transient_age_limit'] == 2.3