"Aaron Harsh" <[EMAIL PROTECTED]> writes:
> We've just recently started seeing sporadic constraint violations on system 
> tables.  For example:
>   duplicate key violates unique constraint "pg_class_oid_index" [for 
> Statement "CREATE TEMPORARY TABLE...

OID wraparound would explain that ...

> and the occasional
>   unexpected chunk number 0 (expected 1) for toast value

... but not that.  The latter might possibly be due to a corrupt index
on a toast table.  If you have a reproducible way of causing it, I'd
definitely love to see it.

                        regards, tom lane

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