n 2/6/07, Alvaro Herrera <alvherre@xxxxxxxxxxxxxxxxx> wrote:
Merlin Moncure wrote: > ya, it doesn't seem to match, as this seems to be repeating quite > regularly. interesting that my 'clog' files start at 06B6 and count > up. 0207 is way off the charts. > > a lot of applications are hitting this database, and so far everything > seems to be running ok (i found this log msg by accident), but I am > now officially very nervous. I don't think there's much cause for concern here. If my theory is correct, this is an autovacuum bug which was fixed in 8.1.7. What I'd do is create a 0207 clog file, fill it with 0x55 (which is "transactions committed" for all transactions in that interval), and do a VACUUM FREEZE on that database. You'll need to set pg_database.datallowconn=true beforehand. Of course, I'd copy the files somewhere else and experiment on a scratch postmaster, running on a different port, just to be sure ...
thats a big help, database is actually fairly huge, so I may have to just go ahead and do it. I'm off to a meeting, but I'll check back when I'm done and assuming nobody else says 'don't do that', I'll try the fix and post back with the result. thanks all, merlin
