RE: Reading UNDO and displaying it in v$session

From: Milen Kulev <>
Date: Fri, 4 Apr 2008 06:57:57 +0200
Message-ID: <00e101c89610$73a25240$>

Hello Yong,
Thanks fot the link. It seems that oracle is not updating the information Of ROW_WAIT_OBJ_*# consistently.

Best Regrads. Milen

-----Original Message-----
From: [] On Behalf Of Yong Huang Sent: Thursday, April 03, 2008 8:48 PM
Subject: Re: Reading UNDO and displaying it in v$session

Jonathan Lewis posted a message about this problem before having the same suspicion.

Yong Huang

> From: "kyle Hailey" <>
> don't seem to be as dependable as P1 and P2 for IO events. Not sure
> why. My guess is that sometimes when they are not filled out, then the
> values are left over from previous usage (like a db file sequential
> read from UNDO in your case) What are the value of P1 and P2 for your
> direct path write temp waits ( ie your File and Block)?
> Best
> Kyle

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Received on Thu Apr 03 2008 - 23:57:57 CDT

Original text of this message