[Buildbot-devel] Too many SQL Variables

[Fadwa]

Hello,
I am a newbie in buildbot, I added two slaves and every time I start them I get 
this error:

  --- <exception caught here> ---
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/Twisted-10.1.0-py2.6-linux-x86_64.egg/twisted/python/threadpool.py", 
line 207, in _worker
        result = context.call(ctx, function, *args, **kwargs)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/Twisted-10.1.0-py2.6-linux-x86_64.egg/twisted/python/context.py", line 
59, in callWithContext
        return self.currentContext().callWithContext(ctx, func, *args, **kw)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/Twisted-10.1.0-py2.6-linux-x86_64.egg/twisted/python/context.py", line 
37, in callWithContext
        return func(*args,**kw)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/Twisted-10.1.0-py2.6-linux-x86_64.egg/twisted/enterprise/adbapi.py", 
line 429, in _runInteraction
        result = interaction(trans, *args, **kw)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/buildbot-0.8.1-py2.6.egg/buildbot/process/builder.py", line 517, in 
_claim_buildreqs
        self.master_incarnation, brids, t)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/buildbot-0.8.1-py2.6.egg/buildbot/db/connector.py", line 819, in 
claim_buildrequests
        master_incarnation, brids)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/buildbot-0.8.1-py2.6.egg/buildbot/db/connector.py", line 830, in 
_txn_claim_buildrequests
        t.execute(q, qargs)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/buildbot-0.8.1-py2.6.egg/buildbot/db/connector.py", line 63, in execute
        return self._cursor.execute(*args, **kwargs)
      File "/remote/projects1/intscs/delivery/python2.6/lib/python2.6/site-
packages/buildbot-0.8.1-py2.6.egg/buildbot/db/dbspec.py", line 105, in execute
        result = self.cursor.execute(*args, **kw)
    sqlite3.OperationalError: too many SQL variables

Is there a particular reason why this happens ?
thanks