Hello Raj You probably know this, but this is a new feature (11.2) in which XA transactions span across multiple instances with GTX background process (btw, this leads to interesting side effects). If you are not using this new feature, I don't see an issue disabling the feature. I am sure, this is probably a bug, but if you aren't sure, try disabling the feature and test it. Cheers Riyaj Shamsudeen Principal DBA, Ora!nternals - http://www.orainternals.com - Specialists in Performance, RAC and EBS11i Blog: http://orainternals.wordpress.com Oracle ACE Director and OakTable member http://www.oaktable.com Co-author of the books: Expert Oracle Practices<http://tinyurl.com/book-expert-oracle-practices/>, Pro Oracle SQL, Expert PL/SQL Practices<http://tinyurl.com/book-expert-plsql-practices> On Thu, Oct 6, 2011 at 7:17 AM, rjamya <rjamya@xxxxxxxxx> wrote: > Also forgot to add, We do use XA but all sessions for that app _always_ > connect to a single node. That is how app is partitioned. > Raj > > On Thu, Oct 6, 2011 at 8:00 AM, rjamya <rjamya@xxxxxxxxx> wrote: > > > Single Record View As of: 10/6/2011 7:51:43 AM > > EVENT: DFS lock handle > > P1TEXT: type|mode > > P1: 1146617861 > > P1RAW: 0000000044580005 > > P2TEXT: id1 > > P2: 3376176309 > > P2RAW: 00000000C93C5CB5 > > P3TEXT: id2 > > P3: 0 > > P3RAW: 00 > > WAIT_CLASS_ID: 1893977003 > > WAIT_CLASS#: 0 > > WAIT_CLASS: Other > > WAIT_TIME: 0 > > SECONDS_IN_WAIT: 0 > > STATE: WAITING > > > > The lock is always DX or BB and mode is always 5. > > > > Raj > > On Thu, Oct 6, 2011 at 7:43 AM, <jonathan@xxxxxxxxxxxxxxxxxx> wrote: > > > >> > >> What's the actual lock for ? (in other words, what's the p1raw value) > >> > >> Regards > >> Jonathan Lewis > >> > >> > > > -- > ----- > Best regards > Raj > > > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l