pginfo <pginfo(at)t1(dot)unisoftbg(dot)com> writes:
> I try to run vacuum full analyze on pg 7.3.1 but I get this messages:
> NOTICE: Child itemid in update-chain marked as unused - can't continue
> repair_frag
> ERROR: Parent tuple was not found.
I don't believe that's 7.3.anything. Check the version again?
> How can I solve the problem?
If this is 7.2.*, you might find that updating to 7.2.4 (due out in a
week) will fix it. Otherwise I'd suggest dumping and reloading the
table.
regards, tom lane