id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12015	OperationalError: database is locked	Andrey Semashev	Douglas Gregor	"==== How to Reproduce ====

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

''(please provide additional details here)''

Request parameters:
{{{
{'0_component': u'parameter',
 '0_component_mode': u'',
 '0_status': [u'assigned', u'new', u'reopened'],
 '__FORM_TOKEN': u'8e9714cb184b0eedee99acb4',
 'add_clause_1': u'',
 'add_filter_0': u'',
 'col': ['id', u'summary', u'status', u'type', u'milestone', u'component'],
 'group': u'',
 'max': u'100',
 'order': u'priority',
 'update': u'Update'}
}}}

User agent: `Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0`

==== System Information ====
''System information not available''

==== Enabled Plugins ====
''Plugin information not available''

==== Python Traceback ====
{{{
Traceback (most recent call last):
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/web/main.py"", line 511, in _dispatch_request
    dispatcher.dispatch(req)
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/web/main.py"", line 237, in dispatch
    resp = chosen_handler.process_request(req)
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/ticket/query.py"", line 925, in process_request
    req.redirect(query.get_href(req.href))
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/web/api.py"", line 362, in redirect
    self.session.save() # has to be done before the redirect is sent
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/web/session.py"", line 105, in save
    @self.env.with_transaction()
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/db/api.py"", line 77, in transaction_wrapper
    fn(ldb)
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/web/session.py"", line 140, in save_session
    """""", (self.sid, authenticated))
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/db/util.py"", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/db/sqlite_backend.py"", line 78, in execute
    result = PyFormatCursor.execute(self, *args)
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/db/sqlite_backend.py"", line 56, in execute
    args or [])
  File ""/usr/lib/python2.6/site-packages/Trac-0.12.2-py2.6.egg/trac/db/sqlite_backend.py"", line 48, in _rollback_on_error
    return function(self, *args, **kwargs)
OperationalError: database is locked
}}}"	Bugs	new	To Be Determined	trac / subversion	Boost 1.61.0	Problem