Raj, Might it be that your sessions are attached to different instances? What are you checking? V$ or GV$ views ? Regards, Stephane Faroult RoughSea Ltd http://www.roughsea.com On Fri, 15 Oct 2004 11:18 , rjamya <rjamya@xxxxxxxxx> sent: Oracle 9204, AIX 5.2, RAC system. I am trying to write a script that will show all the blocking locks in the system and the SQL beign executed by the sessions. So, here is how I tested ... create table raj_test(a varchar2(1)) / insert into raj_Test values ('A') / commit / update /* test 1 */ raj_test set a = 'B' / in another session logging in as the same user update /* test 2 */ raj_test set a = 'C' / when i run my script, the blocker session shows hash value of 0, so I am unable to show the associated SQL. The locked session shows the hash value and I can show the sql. does anyone know why this might be happening? Any workarounds? TIA Raj ------------------------------ -- //www.freelists.org/webpage/oracle-l[1] --- Links --- 1 modules/refer.pl?redirect=http%3A%2F%2Fwww.freelists.org%2Fwebpage%2Foracle-l -- //www.freelists.org/webpage/oracle-l