OperationalError: database is locked

[khamdy]

How to Reproduce

While doing a GET operation on /query, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'col': [u'id',
         u'summary',
         u'resource',
         u'status',
         u'owner',
         u'type',
         u'priority'],
 'group': u'severity',
 'or': u'',
 'order': u'priority',
 'owner': u'$USER',
 'report': u'7',
 'resource': u'khamdy',
 'status': [u'accepted',
            u'assigned',
            u'new',
            u'reopened',
            u'Dev_Complete',
            u'QA_Failed',
            u'accepted',
            u'assigned',
            u'new',
            u'reopened']}

User agent: #USER_AGENT#

System Information

Trac	0.12.2
Genshi	0.6
mod_python	3.2.8
pysqlite	2.3.3
Python	2.4.3 (#1, Jun 11 2009, 14:09:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-44)]
setuptools	0.6c9
SQLite	3.3.6
Subversion	1.4.2 (r22196)
jQuery	#JQUERY#

Enabled Plugins

TracAccess	0.1
TracAccountManager	0.3dev-r9785
TracWysiwyg	0.2-r7817

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/web/main.py", line 511, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/web/main.py", line 260, in dispatch
    req.session.save()
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/web/session.py", line 105, in save
    @self.env.with_transaction()
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/db/api.py", line 77, in transaction_wrapper
    fn(ldb)
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/web/session.py", line 137, in save_session
    cursor.execute("""
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/db/util.py", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/db/sqlite_backend.py", line 78, in execute
    result = PyFormatCursor.execute(self, *args)
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/db/sqlite_backend.py", line 56, in execute
    args or [])
  File "/usr/lib/python2.4/site-packages/Trac-0.12.2-py2.4.egg/trac/db/sqlite_backend.py", line 48, in _rollback_on_error
    return function(self, *args, **kwargs)
OperationalError: database is locked

[Remy Blank]

Duplicate of #10468.