Listers, When I kill a session and the status shows as "KILLED" in v$session, I assumed that the rollback is taking place. I am not sure what is happening here: SYS@PROD> select sid,saddr, serial#, client_info, to_char(logon_time,'DD-MON-YY HH:MIam'), status 2 from v$session 3 where client_info like '%USER%' SYS@PROD> / more.. SID SADDR SERIAL# CLIENT_INFO ---------- ---------------- ---------- ---------------------------------------------------------------- TO_CHAR(LOGON_TIME,'DD-MON-YY STATUS --------------------------------------------------------------------------- -------- 942 C0000000B99775F8 30069 USER,USER,A147946,,psqed.exe, 29-JAN-09 02:48pm KILLED 1013 C0000000BC9B5C58 4411 USER,USER,A147946,,PSIDE.EXE, 29-JAN-09 03:19pm KILLED SYS@PROD> SYS@PROD> SYS@PROD> select addr, START_TIME, SES_ADDR , USED_UBLK, USED_UREC 2 from v$transaction 3 where ses_addr in ('C0000000B99775F8','C0000000BC9B5C58'); no rows selected SYS@PROD> select count(*) from v$transaction 2 SYS@PROD> / more.. COUNT(*) ---------- 0 SYS@PROD> Thanks.