Oracle-L: RE: Things to validate / collect before Killing a session !!!!

From: Reddy, Madhusudana <Madhusudana.Reddy_at_bestbuy.com>
Date: Tue, 08 Apr 2003 13:43:42 -0800
Message-ID: <F001.0057D609.20030408134342@fatcity.com>

My Question is very simple , sorry to be ambiguous with my poor English...

We can kill a session either by " Alter System Kill Session ... " or by identifying the PID and use KILL command on OS Side .

Sometimes to rollback the huge transaction , Oracle keeps the session in " KILLED" status , but it wont really clear the session , unlike KILL from OS ( correct me if I am wrong ) . My question is HOW Oracle is going to rollback the transaction when we use the KILL -9 <PID> as the session immediately disappears when we query V$SESSION for SID.

And also are there any parameters in init.ora that are going to effect the Rollback ( Any Parallel Rollback ??? ).

[Madhu, Reddy]

-----Original Message-----
Sent: Tuesday, April 08, 2003 3:34 PM
To: Multiple recipients of list ORACLE-L

Madhu.

You seem to be confused between "kill -9" and "Alter system" and adding to the confusion.."rollback" and "PARALLEL"

I suggest read the Concepts manual, epc on how client and server process work for an oracle session.

-Arun.

Sr. Oracle DBA

Original Message ----- To: Multiple recipients of list ORACLE-L <mailto:ORACLE-L_at_fatcity.com> Sent: Friday, April 04, 2003 2:53 PM

Thanks Kurt !!!

All,

what Actually Oracle will do when we kill the JOB by " kill -9" , instead of "Alter System ....". What about the Rollback ?? Any PARALLEL parameters in init.ora has any effect if we kill the process by "kill -9".

Any other inputs on " Collecting the stats before killing a session " ??

[Madhu, Reddy]

-----Original Message-----
Sent: Friday, April 04, 2003 11:24 AM
To: Multiple recipients of list ORACLE-L

I always check to see how much rollback they have in case I want to watch it rollback and I always make sure I get the pid for the associated UNIX process in case I decide I need to kill it. Of course, I always almost remember to do these two things.

Kurt

-----Original Message-----

Sent: Friday, April 04, 2003 11:34 AM
To: Multiple recipients of list ORACLE-L

Hi List,
We all need to kill the user sessions in the situations of locking or sometime on end user / application support person's request . I would like to know best practices followed before killing a session , Any of you collect some information/statistics before kill ??

Please share your ideas and advice me on this.

Thanks in advance,Madhu

--

Please see the official ORACLE-L FAQ: http://www.orafaq.net
--

Author: Reddy, Madhusudana
INET: Madhusudana.Reddy_at_bestbuy.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com 
San Diego, California        -- Mailing list and web hosting services 


--------------------------------------------------------------------- 

To REMOVE yourself from this mailing list, send an E-Mail message

to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).

--

Please see the official ORACLE-L FAQ: http://www.orafaq.net
--

Author: Reddy, Madhusudana
INET: Madhusudana.Reddy_at_bestbuy.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services


---------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message