From: Jerry Sievers <gsievers19@comcast.net>
To: lalit jangra <lalit.j.jangra@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: Getting invalid page header in block while vacuuming PostgreSQL
 DB.
References: 
 <CANWCqG5BggxqVVEhFuLRYcKGD1Q5LdbRjGPk7h5zoHH1An+MBA@mail.gmail.com>
Date: Mon, 01 Sep 2014 12:57:17 -0500
In-Reply-To: 
 <CANWCqG5BggxqVVEhFuLRYcKGD1Q5LdbRjGPk7h5zoHH1An+MBA@mail.gmail.com>
 (lalit jangra's message of "Sat, 30 Aug 2014 22:42:31 +0530")
Message-ID: <86d2bfgr5u.fsf@jerry.enova.com>
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lalit jangra <lalit.j.jangra@gmail.com> writes:

> Hi,
>
> I am using PostgreSQL 9.2 and while trying to vacuum db named mcfdb3, i am getting below error.
>
> DETAIL:  0 index row versions were removed.
>
> 110 index pages have been deleted, 110 are currently reusable.
>
> CPU 0.02s/0.00u sec elapsed 0.03 sec.
>
> INFO:  index "i1409226645953" now contains 374682 row versions in 3267 pages
>
> DETAIL:  0 index row versions were removed.
>
> 1436 index pages have been deleted, 1436 are currently reusable.
>
> CPU 0.01s/0.00u sec elapsed 0.01 sec.
>
> vacuumdb: vacuuming of database "mcfdb3" failed: ERROR:  invalid page header in block 15871 of relation base/17148/30976

Start by looking up that relfilenode in pg_class of the involved DB to
see if it's a table or index relation that's corrupt.

If per chance this is an index than rebuilding same may be all that's needed.
>
> DETAIL:  0 index row versions were removed.
>
> 110 index pages have been deleted, 110 are currently reusable.
>
> CPU 0.02s/0.00u sec elapsed 0.03 sec.
>
> INFO:  index "i1409226645953" now contains 374682 row versions in 3267 pages
>
> DETAIL:  0 index row versions were removed.
>
> 1436 index pages have been deleted, 1436 are currently reusable.
>
> CPU 0.01s/0.00u sec elapsed 0.01 sec.
>
> vacuumdb: vacuuming of database "mcfdb3" failed: ERROR:  invalid page header in block 15871 of relation base/17148/30976
>
> Please help.
>  
> Regards,
> Lalit.
>

-- 
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
p: 312.241.7800


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