From: Gourish Singbal <gourish@gmail.com>
To: Joao <joao.junior@conab.gov.br>
Cc: pgsql-performance@postgresql.org, "pgsql-admin@postgresql.org" <pgsql-admin@postgresql.org>
Subject: Re: [PERFORM] help me problems with pg_clog file
Date: Fri, 2 Jun 2006 13:11:27 +0530
Message-ID: <674d1f8a0606020041t42878fadxd154cb076a27cdaa@mail.gmail.com> (raw)
In-Reply-To: <002b01c6859f$4f6a7930$d815010a@gesin293>
References: <002b01c6859f$4f6a7930$d815010a@gesin293>
Joao,
If you had send the Email to pgsql-admin mailing list you would have got a
faster answer to ur query..
here is what i managed to do:-
1. I deleted the
$ls -lart the pg_clog folder
total 756
-rw------- 1 postgres users 262144 2006-04-10 17:16 0001
-rw------- 1 postgres users 262144 2006-04-10 17:16 0000
drwx------ 2 postgres users 4096 2006-04-10 17:16 .
-rw------- 1 postgres users 229376 2006-05-31 18:17 0002
drwx------ 10 postgres users 4096 2006-06-02 12:22 ..
$ mv 0002 ../
$ ls
0000 0001
$psql regression
regression=# select count(1) from accounts;
ERROR: could not access status of transaction 2225656
DETAIL: could not open file "pg_clog/0002": No such file or directory
regression=# \q
This Error came since the 0002 file from the pg_clog folder was missing.
Since the logs are missing from pg_clog folder can perfom pg_resetxlogs to
reset the logs and bring up the database.
$ /usr/local/pgsql/bin/pg_ctl -D /newdisk/postgres/data -l
/newdisk/postgres/data_log stop
waiting for postmaster to shut down... done
postmaster stopped
$ /usr/local/pgsql/bin/pg_resetxlog -x 2999800 /newdisk/postgres/data
Transaction log reset
The Value 2999800 u can get if u see the postgresql output file during
startup or using
grep "next transaction ID" /newdisk/postgres/data_log
than did the following:-
/usr/local/pgsql/bin/psql regression
regression=# select count(1) from accounts;
count
---------
1000001
(1 row)
regression=# \q
You can get more info from
http://unix.business.utah.edu/doc/applications/postgres/postgres-html/app-pgresetxlog.html
Hope this gives u some usefull information in solving ur recovery condition.
~gourish
On 6/1/06, Joao <joao.junior@conab.gov.br> wrote:
>
> when i try do \d in psql on a table i get this message!
> this happens too when i try to run pg_dump...
>
> ERROR: could not access status of transaction 4294967295
> DETAIL: could not open file "pg_clog/0FFF": File or directory not found
>
>
> someone could help me?? PleasE!
>
>
>
>
>
--
Best,
Gourish Singbal
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To: pgsql-performance@postgresql.org
Cc: gourish@gmail.com, joao.junior@conab.gov.br, pgsql-admin@postgresql.org
Subject: Re: [PERFORM] help me problems with pg_clog file
In-Reply-To: <674d1f8a0606020041t42878fadxd154cb076a27cdaa@mail.gmail.com>
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