Rajesh: You are right. This is related to lock management (mastering/re-mastering) and I am making a best guess from the traces and I think this is related to acknowledging the lock convertion (stale convert acknowledge?). Just do a quick check on (G)V$resource_limit and see whether you are hitting any ceiling. If not raise a TAR ;) > > stale cvak fr 1:45cdffa30 > ([0x2][0x2],[CI])[h=KJUSERNL,n=KJUSEREX,b=KJUSERPR,ls=KJUSERSTAT_NOVALUE ===== Have a nice day !! ------------------------------------------------------------ Best Regards, K Gopalakrishnan, Co-Author: Oracle Wait Interface: Oracle Press 2004. http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/ __________________________________ Do you Yahoo!? Yahoo! Mail is new and improved - Check it out! http://promotions.yahoo.com/new_mail ---------------------------------------------------------------- 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 -----------------------------------------------------------------