This morning I got bitten by the "SELECT INTO" / "CREATE TABLE AS" 
from tables without OIDs bug in 7.4.1.

Postmaster killed all the backends and restarted - pg was down for 2 
seconds.

This happened two times within a few minute period.

Now I am getting 'invalid page header in block 52979 of relation 
"pg_attribute"' errors in the postgresql log file. I cannot reindex 
or view the table at all even as user postgres.

I have not tried a manual restart of PG.

Although hardware could be an issue I tend to doubt it. This server 
passed an extensive memory test before going into service and I see 
no occurrences of this error prior to the crash but several since 
then.

This is a 24x7x365 system. I do have a dump from this morning (I do 
two per day) but I would prefer to fix the problem with no downtime 
or data loss.

What serious problem is this likely to cause/be causing? What are my 
options for fixing it?

Naturally, quick replies are appreciated - this is making me very 
nervous.

Cheers,
Steve


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