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Re: pg_dump: NOTICE: ShmemAlloc: out of memory - Mailing list pgsql-general

From Tom Lane
Subject Re: pg_dump: NOTICE: ShmemAlloc: out of memory
Date
Msg-id 13486.1050093112@sss.pgh.pa.us
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In response to pg_dump: NOTICE: ShmemAlloc: out of memory  (Brad Paul <bradpaul.a.with@long.tail.bdp-optics.com>)
Responses Re: pg_dump: NOTICE: ShmemAlloc: out of memory
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Brad Paul <bradpaul.a.with@long.tail.bdp-optics.com> writes:
> I'm trying to dump a database called stocks. I did:
> pg_dump stocks > stocks.sql
> pg_dump: NOTICE:  ShmemAlloc: out of memory pg_dump: Attempt to lock table
> "slab" failed.  ERROR:  LockAcquire: holder table out of memory

> This database has 3478 tables.

You probably need to increase max_locks_per_transaction.  Or better,
rethink your schema.  Thousands of tiny tables is usually a bad idea
compared to a smaller number of (properly indexed) tables.

            regards, tom lane

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