Re: transaction id wraparound - Mailing list pgsql-admin

From Jim C. Nasby
Subject Re: transaction id wraparound
Date
Msg-id 20060929004041.GL34238@nasby.net
Whole thread Raw
In response to Re: transaction id wraparound  ("Talha Khan" <talha.amjad@gmail.com>)
List 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@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)

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