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From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Scott Marlowe <scott.marlowe@gmail.com>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-admin@postgresql.org
Subject: Re: 'SGT DETAIL: Could not open file "pg_clog/05DC": No such file or directory' - what to do now?
Date: Wed, 04 May 2011 22:27:44 +0200
Message-ID: <4DC1B6C0.2000507@wpkg.org> (raw)
In-Reply-To: <4DC1B378.6050105@wpkg.org>
References: <4DC0F063.70306@wpkg.org>
	<4DC15137020000250003D295@gw.wicourts.gov>
	<4DC19CD1.7070600@wpkg.org>
	<BANLkTikG3yN0xB_wTy1SVYOrA9E=FNBZLg@mail.gmail.com>
	<4DC1B378.6050105@wpkg.org>

On 04.05.2011 22:13, Tomasz Chmielewski wrote:
> On 04.05.2011 21:50, Scott Marlowe wrote:
> 
>> Then another pg_clog file disappeared.

OK, I have:

bookstor=# SELECT * FROM core_wot_seq;
  sequence_name   | last_value | increment_by |      max_value      | min_value | cache_value | log_cnt | is_cycled | is_called 
------------------+------------+--------------+---------------------+-----------+-------------+---------+-----------+-----------
 core_wot_seq     |       2593 |            1 | 9223372036854775807 |         1 |           1 |       8 | f         | t
(1 row)

bookstor=# SELECT 1 FROM core_wot_seq;
 ?column? 
----------
        1
(1 row)

bookstor=# SELECT 1 FROM core_wot_seq FOR UPDATE;
ERROR:  could not access status of transaction 1573786613
DETAIL:  Could not open file "pg_clog/05DC": No such file or directory.


How do I best recover from this? Stop postgres, create an empty, 256k pg_clog/05DC file, start postgres?

Export table, drop table, import table? Anything else?


-- 
Tomasz Chmielewski
http://wpkg.org



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