OperationalError: database is locked

[Andrey Semashev]

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