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Re: pg_dump on Postgres 9.1

From: Alanoly Andrews <alanolya(at)invera(dot)com>
To: "'pgsql-admin(at)postgresql(dot)org'" <pgsql-admin(at)postgresql(dot)org>
Cc: 'Tom Lane' <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: pg_dump on Postgres 9.1
Date: 2012-08-01 19:42:02
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
On this issue, instead of going for a newer version of xlc, as suggested, I opted to get a newer version of the Postgres source code, 9.1.4. After compiling it with the same xlc version, I found that pg_dump works as expected. So, the problem appears to be somewhere in the 9.1 source code, at least for binaries created from it for AIX (6.1).



-----Original Message-----
From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us] 
Sent: Friday, July 27, 2012 12:13 PM
To: Alanoly Andrews
Cc: 'pgsql-admin(at)postgresql(dot)org'
Subject: Re: [ADMIN] pg_dump on Postgres 9.1

Alanoly Andrews <alanolya(at)invera(dot)com> writes:
> Is there any reported bug with pg_dump in Postgres 9.1, on AIX ? The following command hangs for "ever" and has to be interrupted. It creates a zero-length file.

We had a recent report of strange server-side behavior on AIX that went away after rebuilding with a newer version of xlc, suggesting that the code was getting bitten by an xlc optimization bug.  Perhaps this is the same thing inside pg_dump.  If you're not using the latest xlc, try updating.  If you are, does rebuilding with -O0 change the behavior?

			regards, tom lane
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