C GG <cgg0007@xxxxxxxxx> writes: > When trying to restart the PostgreSQL 9.2 database for our JIRA > installation, we're getting > "PANIC: could not open critical system index 2662" ... I've tried various > things like turning on zero_damaged_pages but postmaster still crashes on > connect when attempting to pg_dump. 2662 is pg_class_oid_index :-( Try starting a single-user backend with the ignore-system-indexes flag, and doing "REINDEX INDEX pg_class_oid_index". If that works, I'd try reindexing the rest of the system just to see how bad things are. If that doesn't work, it's time to hire professional help --- there are several companies that specialize in PG data recovery. regards, tom lane