ProgrammingError: Cannot operate on a closed cursor.

[dwozniak]

How to Reproduce

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

Request parameters:

{'new_paste': True, 'paste_id': None}

User Agent was: Opera/9.80 (Windows NT 6.1; U; pl) Presto/2.5.24 Version/10.53

System Information

Trac	0.11.6
Python	2.6.4 (r264:75706, May 13 2010, 20:32:36) [GCC 3.4.6 (Gentoo Hardened 3.4.6-r2 p1.5, ssp-3.4.6-1.0, pie-8.7.10)]
setuptools	0.6
SQLite	3.6.17
pysqlite	2.5.5
Genshi	0.5.1
Pygments	1.0
Subversion	1.6.5 (r38866)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 450, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 206, in dispatch
    resp = chosen_handler.process_request(req)
  File "/home/projects/oferta/trac/plugins/TracPaste-0.2-py2.6.egg/tracpaste/web_ui.py", line 141, in process_request
    'recent':           get_pastes(env=self.env, number=self.max_recent)
  File "/home/projects/oferta/trac/plugins/TracPaste-0.2-py2.6.egg/tracpaste/model.py", line 53, in get_pastes
    cursor.execute(sql, where_values)
  File "/usr/lib/python2.6/site-packages/trac/db/util.py", line 65, in execute
    return self.cursor.execute(sql)
  File "/usr/lib/python2.6/site-packages/trac/db/sqlite_backend.py", line 80, in execute
    PyFormatCursor.execute(self, *args)
  File "/usr/lib/python2.6/site-packages/trac/db/sqlite_backend.py", line 59, in execute
    args or [])
  File "/usr/lib/python2.6/site-packages/trac/db/sqlite_backend.py", line 51, in _rollback_on_error
    return function(self, *args, **kwargs)
ProgrammingError: Cannot operate on a closed cursor.

[anonymous]

Happens in the timeline, too.

[Ryan J Ollos]

Duplicate of #6341.