On 10-08-25 03:30 AM, Gnanakumar wrote:
Hi,
Our production server is running PostgreSQL v8.2.3 on RHEL5. Autovacuum
daemon is also running in the server.
A brief background on my use case: We heavily use a table for storing of
data temporarily inside PostgreSQL functions. Eventually, there will not be
any record in the table. Because this table is used heavily, I usually keep
tab of this particular table in "pg_stat_user_tables", so that disk space is
within control.
Recently, I noticed that "last_autovacuum" and "last_autoanalyze" column for
this table showing a<NULL> value. My question here is, what
condition/scenario would make this column to update to<NULL> value by
autovacuum? I can add one more point here, which I remember, that is I
performed a TRUNCATE on this table just before. I believe that this is not
because of TRUNCATE TABLE?
Truncate should not affect those values.
Has your Postgres instance crashed or been restarted with immediate mode
since the last vacuum? This will cause the autovacuum information to be
null.
Also, are you sure that autovacuum has processed these tables at least once?
--
Brad Nicholson 416-673-4106
Database Administrator, Afilias Canada Corp.
--
Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin
