Hi! I have a serious problem: I think about a week ago my database was damaged by this nasty pack()ing bug. Unfortunately this error was not noticeable until my zope restart yesterday. :-( The consequence is a POSKeyError (POSKeyError: 0000000000000009) which prevents zope from starting. I tried to repair the database with fsrecover.py (from zope-2.6.3 and zope-2.6.4rc1), and it deleted some invalid transactions but it did not solve the problem. Then I tried the instructions on http://www.zopelabs.com/cookbook/1054240694, but had no success at all because I got again a POSKeyError. *g* I used fsrefs.py on the Data.fs and the first 2 error it found was: --- cut here --- oid 0x4 AccessControl.User.UserFolder last updated: 2004-01-16 14:08:02.781121, tid=0x3526BB00BDDB9CCL refers to invalid object: oid 0x9 missing: 'Persistence.PersistentMapping' oid 0xf17 AccessControl.User.UserFolder last updated: 2004-01-16 14:08:14.036884, tid=0x3526BB03BE40544L refers to invalid object: oid 0x1162 missing: 'Persistence.PersistentMapping' --- cut here --- After these 2 errors follow about 24Kb of errors or references to missing objects or objects that could not be loaded. It seems to me, that some very basic objects were destroyed a week ago. Of course all backups during the last week contain the damaged database. :-( It is really a pity, that the consequences of this database damage shows not up until the next zope restart... Is there any possibility to recover the database or to "extract" the transactions of the last 8 days and to prevent the complete loss of data in that time? Has anybody an idea, which I could try? Bye, Dominik P.S. I hope I got the suitable mailing list, I was uncertain if zope.general or zope.zobd fits better...