Unable to get database connection within 20 seconds - Hets - Trac

[fox_nsgrcu@…]

While trying to access to

​http://www.informatik.uni-bremen.de/agbkb/forschung/formal_methods/CoFI/hets/developers_e.htm

I got the following traceback :

Oops…
Trac detected an internal error:

If you think this really should work and you can reproduce it, you should consider reporting this problem to the Trac team.

Go to http://trac.edgewall.org/ and create a new ticket where you describe the problem, how to reproduce it. Don't forget to include the Python traceback found below.

TracGuide — The Trac User and Administration Guide
Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib64/python2.4/site-packages/trac/web/main.py", line 387, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib64/python2.4/site-packages/trac/web/main.py", line 191, in dispatch
    req.perm = PermissionCache(self.env, req.authname)
  File "/usr/local/lib64/python2.4/site-packages/trac/perm.py", line 267, in __init__
    self.perms = PermissionSystem(env).get_user_permissions(username)
  File "/usr/local/lib64/python2.4/site-packages/trac/perm.py", line 231, in get_user_permissions
    for perm in self.store.get_user_permissions(username):
  File "/usr/local/lib64/python2.4/site-packages/trac/perm.py", line 109, in get_user_permissions
    db = self.env.get_db_cnx()
  File "/usr/local/lib64/python2.4/site-packages/trac/env.py", line 182, in get_db_cnx
    return DatabaseManager(self).get_connection()
  File "/usr/local/lib64/python2.4/site-packages/trac/db/api.py", line 75, in get_connection
    return self._cnx_pool.get_cnx(self.timeout or None)
  File "/usr/local/lib64/python2.4/site-packages/trac/db/pool.py", line 107, in get_cnx
    raise TimeoutError('Unable to get database '
TimeoutError: Unable to get database connection within 20 seconds

[Christian Boos]

Which version of Trac / pysqlite and SQLite are you using?

(if you're not using sqlite for the db backend, please mention the relevant information for your db backend as well)