OperationalError: database is locked

[karl.swanke]

How to Reproduce

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

(please provide additional details here)

Request parameters:

{}

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0

System Information

Trac	0.12.3
Trac	0.12.3
Babel	0.9.5
CustomFieldAdmin	0.2.5
Docutils	0.7
Genshi	0.6
GIT	1.8.4
mod_wsgi	2.5 (WSGIProcessGroup trac_wsgi_01 WSGIApplicationGroup %{GLOBAL})
Pygments	1.4dev-20110115
pysqlite	2.4.1
Python	2.5.2 (r252:60911, Jan 24 2010, 18:02:01) [GCC 4.3.2]
Python	2.5.2 (r252:60911, Jan 24 2010, 18:02:01) [GCC 4.3.2]
pytz	2008c
pytz	2008c
RPC	1.1.2
setuptools	0.6c12
setuptools	0.6c12
SQLite	3.7.3
Subversion	1.8.10 (r1615264)
jQuery	1.4.4

Enabled Plugins

BatchModify	0.8.0-trac0.12
SecureSession	0.10dev-r1500
TicketImport	0.8
TracAnnouncer	0.12.1.dev
TracCustomFieldAdmin	0.2.5
TracDownloads	0.3
TracGit	0.12.0.5dev
tracrpc.changeset	N/A
TracXMLRPC	1.1.2
WorkflowEditorPlugin	1.0.4-r10056

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.5/site-packages/Trac-0.12.3-py2.5.egg/trac/web/main.py", line 522, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.12.3-py2.5.egg/trac/web/main.py", line 243, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.12.3-py2.5.egg/trac/web/auth.py", line 115, in process_request
    self._do_login(req)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.12.3-py2.5.egg/trac/web/auth.py", line 153, in _do_login
    @self.env.with_transaction()
  File "/usr/local/lib/python2.5/site-packages/Trac-0.12.3-py2.5.egg/trac/db/api.py", line 78, in transaction_wrapper
    ldb.commit()
OperationalError: database is locked

[Ryan J Ollos]

A duplicate of #3446, one of MostFrequentDuplicates.

If rate of the issue is too high, we recommend to use PostgreSQL or MySQL rather than SQLite.

(comment copied from comment:2:ticket:11738; this appears to be coming from the same Trac instance as the report in #11738.)