| From: | "Jim C(dot) Nasby" <jim(at)nasby(dot)net> |
|---|---|
| To: | Talha Khan <talha(dot)amjad(at)gmail(dot)com> |
| Cc: | Sriram Dandapani <sdandapani(at)counterpane(dot)com>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: transaction id wraparound |
| Date: | 2006-09-29 00:40:42 |
| Message-ID: | 20060929004041.GL34238@nasby.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-admin |
On Thu, Sep 28, 2006 at 11:58:12AM -0700, Talha Khan wrote:
> datfrozenxid column of pg_database row is updated at the completion of any
> database wide vacuum operation. The value store here is the cuttoff xid used
> by the vacuum operation all xid's older then this cutoffxid are replaced by
> theis xid so i think the behaviour being shown by your database is quite
> normal.
True, but if age(xid) is showing how many transactions have occured
since xid then his conclusion that he did 500k transactions between
those two snapshots is correct.
--
Jim Nasby jim(at)nasby(dot)net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Jim C. Nasby | 2006-09-29 00:47:36 | Re: number of transactions doubling |
| Previous Message | Oliver Jowett | 2006-09-28 23:13:41 | Re: [JDBC] number of transactions doubling |