Without this patch, when upgrading after you have stored the deprecated features parameter, the cursor became broken and no more migrations could happen. You got this error:
Traceback (most recent call last):
File "/usr/local/bin/odoo", line 6, in <module>
exec(compile(open(__file__).read(), __file__, 'exec'))
File "/opt/odoo/custom/src/odoo/odoo.py", line 160, in <module>
main()
File "/opt/odoo/custom/src/odoo/odoo.py", line 157, in main
openerp.cli.main()
File "/opt/odoo/custom/src/odoo/openerp/cli/command.py", line 64, in main
o.run(args)
File "/opt/odoo/custom/src/odoo/openerp/cli/shell.py", line 65, in run
self.shell(openerp.tools.config['db_name'])
File "/opt/odoo/custom/src/odoo/openerp/cli/shell.py", line 52, in shell
registry = openerp.modules.registry.RegistryManager.get(dbname)
File "/opt/odoo/custom/src/odoo/openerp/modules/registry.py", line 355, in get
update_module)
File "/opt/odoo/custom/src/odoo/openerp/modules/registry.py", line 386, in new
openerp.modules.load_modules(registry._db, force_demo, status, update_module)
File "/opt/odoo/custom/src/odoo/openerp/modules/loading.py", line 335, in load_modules
force, status, report, loaded_modules, update_module)
File "/opt/odoo/custom/src/odoo/openerp/modules/loading.py", line 239, in load_marked_modules
loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
File "/opt/odoo/custom/src/odoo/openerp/modules/loading.py", line 136, in load_module_graph
registry.setup_models(cr, partial=True)
File "/opt/odoo/custom/src/odoo/openerp/modules/registry.py", line 186, in setup_models
cr.execute('select model, transient from ir_model where state=%s', ('manual',))
File "/opt/odoo/custom/src/odoo/openerp/sql_db.py", line 154, in wrapper
return f(self, *args, **kwargs)
File "/opt/odoo/custom/src/odoo/openerp/sql_db.py", line 233, in execute
res = self._obj.execute(query, params)
psycopg2.InternalError: current transaction is aborted, commands ignored until end of transaction block
Now you can safely migrate, be that parameter pre-created or not.