Re: Any tools/scripts for finding underlying cause of concurrency?
Date: Wed, 11 Mar 2009 11:54:01 -0700 (PDT)
On Mar 8, 3:56 pm, vm22 <vivekmarw..._at_gmail.com> wrote:
> We have been having concurrency issues for the past week but have
> managed to resolve it (the underlying cause of it was a bug). One
> thing that I wanted to know is that if there are any tools or scripts
> out there to tell us immediately the cause of the concurrency?
> All we saw in OEM was a couple of statements which were the Top SQL as
> well as a session that was blocking and several being blocked. We
> could not see the underlying SQL that was causing it. Eventually, the
> issue was the UNDO segments being released from a huge transaction -
> thereby causing the concurrency.
> Any help is appreciated.
Yes, there is help available all over the place.
- Oracle documentation.
- Books by Thomas Kyte
- Book by Cary Millsap
- Book by Gaja Krishna Vaidyanatha et al.
- Book by Jonathan Lewis
- Book by Christopher Lawson
Try looking at these - the one by Christopher Lawson is an easy read.
Received on Wed Mar 11 2009 - 13:54:01 CDT