RE: How to remove Lock on a Table

Personally, I always whack 'em first with a great big stick.

May not be everyone's cup of tea I suppose, but then again, I *never* have a hung session holding a lock and requiring a database bounce.

Jared

"Ben" <poelsb_at_post.queensu.ca>
Sent by: root_at_fatcity.com
06/19/2002 01:28 PM
Please respond to ORACLE-L  

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        RE: How to remove Lock on a Table

Hi

Was any consensus reached on the issue of how best to remove the offending sessions, or the difference between the SQL disconnect session and kill session? Or was it just left that whacking it with a kill -9 was the way to go?

Ben

-----Original Message-----
Sent: June 17, 2002 3:09 PM
To: Multiple recipients of list ORACLE-L

interesting point - anyone know how the 8i "alter system disconnect session immediate" differentates from the "alter system kill session"? read something somewhere about it destroying the virtual circuit. I always suspected that it ignored the wait period that the "kill" command goes through to tell the client it is dead (which of course it can't with connection forms like JDBC, so the session never dies).

Jack

• Jared.Still_at_radisys.com wrote:
  > Even better. Kill the OS process first, then kill
  > the Session if still
  > necessary.
  >
  > Using 'Alter system kill session' to remove a
  > session holding a lock has
  > always been problematic in Oracle.
  >
  > On occasion, PMON will *not* clean up the session,
  > and a bounce of the
  > database is required to remove the lock.
  >
  > I've seen it happen on 3 OS's, and versions 7.0.16,
  > 7.2, 7.3, 8.04. Not
  > sure
  > about 8i.
  >
  > Jared
  >
  >
  >
  >
  >
  >
  > "David Marshall" <damarsha_at_cisco.com>
  > Sent by: root_at_fatcity.com
  > 06/17/2002 09:23 AM
  > Please respond to ORACLE-L
  >
  >
  > To: Multiple recipients of list ORACLE-L
  > <ORACLE-L_at_fatcity.com>
  > cc:
  > Subject: RE: How to remove Lock on a
  > Table
  >
  >
  > You might also want to get the os pid from v$process
  > before issuing the
  > alter system kill session statement.
  > Then you can easily track the os process if needed.
  >
  > Select p.spid
  > From v$session s, v$process p
  > Where s.paddr = p.addr
  > And s.sid = &sid;
  >
  > -----Original Message-----
  > Sent: 17 June 2002 13:18
  > To: Multiple recipients of list ORACLE-L
  >
  >
  > Yeah that will do. But you need to wait as Oracle
  > will Rollback the
  > changed
  > data and then rel the lock.
  >
  > HTH
  >
  > Best Regards,
  > Ganesh R
  > Tel : +971 (4) 397 3337 Ext 420
  > Fax : +971 (4) 397 6262
  > HP : +971 (50) 745 6019
  > ============================================
  > Live to learn... forget... and learn again.
  > ============================================
  >
  >
  >
  > -----Original Message-----
  > Sent: Monday, June 17, 2002 2:13 PM
  > To: Multiple recipients of list ORACLE-L
  >
  >
  > Hello all,
  >
  > I want to remove lock on a Table by using this
  > command:
  >
  > Alter system kill session '&sid,&serial'
  >
  > Is this enough or I have to do something else!
  >
  > Regards
  >
  > Ashraf Salaymeh
  > System Analyst
  >
  >
  > __________________________________________________
  > Do You Yahoo!?
  > LAUNCH - Your Yahoo!
  

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