OperationalError: database is locked

[hp]

How to Reproduce

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

(please provide additional details here)

The thing was I:

1. trac-admin /PATH resync
2. And during the resync I requested the timeline.
3. Both crashed.

System Information

Trac	0.11.1
Python	2.4.3 (#1, May 24 2008, 13:47:28) [GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]
setuptools	0.6c9
SQLite	3.3.6
pysqlite	1.1.7
Genshi	0.5.1
mod_python	3.2.8
Subversion	1.5.1 (r32289)

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/web/main.py", line 222, in dispatch
    req.session.save()
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/web/session.py", line 97, in save
    (self.sid,))
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/db/util.py", line 50, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 255, in execute
    self.rs = self.con.db.execute(SQL % parms)
OperationalError: database is locked

[Remy Blank]

See MostFrequentDuplicates, more specifically #3446.