I think I'm going to add this to my list "Things You Will Never Never Never Never Do". Thanks for being the guinea pig, Daniel GUPTA, DEEPENDER wrote: > It seems that the two instance of RAC can run in different modes. Though we > should not do that and run both the instance in the same mode. > > I tried this in my test environment and switched the rollback to undo in 1 > instance and restarted it, while the other instance was running using > rollback segments. After few minutes I switched the rollback segments to > undo segments in the second instance and it worked well. > > Conclusion is that we can switch from UNDO to ROLLBACK in a RAC env one by > one and we don't need to shutdown both the instance at the same time. But > the questions of Daniel are still unanswered. > > 1. How will the auto undo instance perform read consistency with entries > from a manual rollback segment? > 2. What are the recovery implications? > > Regards ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------