How to Reproduce

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

''(please provide additional details here)''

Request parameters:

{'group': u'status',
 'milestone': u'1.8.1',
 'status': [u'reopened', u'assigned', u'new', u'open', u'pending']}

User agent: #USER_AGENT#

System Information

''System information not available''

Enabled Plugins

''Plugin information not available''

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/web/main.py", line 511, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/web/main.py", line 260, in dispatch
    req.session.save()
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/web/session.py", line 153, in save
    @self.env.with_transaction()
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/db/api.py", line 77, in transaction_wrapper
    fn(ldb)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/web/session.py", line 162, in purge_session_attributes
    """, (self.last_visit, self.sid, authenticated))
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.12.1-py2.6.egg/trac/db/util.py", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
    raise errorclass, errorvalue
OperationalError: (1205, 'Lock wait timeout exceeded; try restarting transaction')