Re: VACUUM FULL does not works.......

On Wed, 2006-12-06 at 15:53, asif ali wrote:
> Thanks Everybody for helping me out.
> I checked "pg_stat_activity"/pg_locks, but do not see any activity on
> the table.
> How to find a old running transaction...
> I saw this link, but it did not help..
> http://archives.postgresql.org/pgsql-hackers/2005-02/msg00760.php

Sometimes just using top or ps will show you.

on linux you can run top and then hit c for show command line and look
for ones that are IDLE

Or, try ps:

ps axw|grep postgres

On my machine normally:

2408 ? S 0:00 /usr/local/pgsql/bin/postmaster -p 5432 -D /home/postgres/data
2615 ? S 0:00 postgres: stats buffer process
2616 ? S 0:00 postgres: stats collector process
2857 ? S 0:00 postgres: writer process
2858 ? S 0:00 postgres: stats buffer process
2859 ? S 0:00 postgres: stats collector process

But with an idle transaction:

2408 ? S 0:00 /usr/local/pgsql/bin/postmaster -p 5432 -D /home/postgres/data
2615 ? S 0:00 postgres: stats buffer process
2616 ? S 0:00 postgres: stats collector process
2857 ? S 0:00 postgres: writer process
2858 ? S 0:00 postgres: stats buffer process
2859 ? S 0:00 postgres: stats collector process
8679 ? S 0:00 postgres: smarlowe test [local] idle in transaction

Thar she blows!

Also, you can restart the database and vacuum it then too. Of course,
don't do that during regular business hours...