Mary Ellen Fitzpatrick <mfitzpat@xxxxxx> writes:
> I am trying to run pg_dump on the database with the corrupt table, and
> try to restore the database. I also tried to vacuumdb the database and
> get the same error.
> I get the following error.
> pg_dump <database>
> pg_dump: query to obtain list of data types failed: PANIC: read of clog
> file 100, offset 81920 failed: Success
> server closed the connection unexpectedly
That looks pretty bad --- it implies that there's corruption in the
pg_type system catalog, not only in your user table. Which in turn
suggests that it's not a localized problem but might affect many
different data blocks. I'm afraid that database is probably toast :-(.
An expert might be able to salvage something from it, but only with
great effort, and there'd be no guarantees of getting complete or
consistent data.
regards, tom lane
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