I'm running 2.7.0 on Linux (Mandrake) with Python 2.3.4. I wanted to bump up the database connection pool limit so put the following custom_zodb.py in the instance home: import os import ZODB.FileStorage import ZODB.DB filename = os.path.join(INSTANCE_HOME, 'var', 'Data.fs') Storage = ZODB.FileStorage.FileStorage(filename) DB = ZODB.DB(Storage, pool_size=20, cache_size=2000) Zope starts fine w/ this (inasmuch as it creates a custom_zodb.pyc file) but the problem is that when I try to manage the database from the ZMI, it throws an exception complaining about not being able to lock the database. I've read elsewhere the using custom_zodb.py is deprecated by the new zope.conf file in Zope 2.7, but is there a way to specify the database connection pool size in zope.conf? TIA, John