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ValueError: Cache values may only be in one cache.

by Chad Whitacre — last modified Dec 30, 2008 03:08 PM
This is a low-level ZODB error that may sometimes happen when you refresh a Product without restarting Zope. It therefore is almost never seen in production. Restart will fix it.

It can look like this:

Traceback (innermost last):

* Module ZPublisher.Publish, line 107, in publish
* Module Zope.App.startup, line 222, in commit
* Module ZODB.Transaction, line 236, in commit
* Module ZODB.Transaction, line 351, in _commit_objects
* Module ZODB.Connection, line 423, in commit
__traceback_info__: (('BTrees.IOBTree', 'IOBTree'), '\x00\x00\x00\x00\x00\x00\x00\n', '')

ValueError: Cache values may only be in one cache.