Hello all: We have Oracle 9.2.0.5 database ( single Note RAC ). There were some heavy batch jobs running which cuased the db hang ( only sys connection was working ). We tried to bring down the database after cleaning all sessions. It did not go down with SHUTDOWN IMMEDIATE. We had to abort it. I tried to bring down the DB three times with SHUTDOWN IMMEDIATE it never went down. SMON was trying to cleanup the used extents ( Metalink Note ? 1076161.6 ) as we could see in the alert log file - Waiting for smon to disable tx recovery. SQL> select count(block#) from fet$; COUNT(BLOCK#) ------------- 38 fet$ - free extents SQL> select count(block#) from uet$; COUNT(BLOCK#) ------------- 52905 uet$ - used extents We can share the alert log and system level 10 trace files if anyone wants. These traces were generated when db hung. Appreciate your help. Thanks, -ahmed _____________________________________________ "If we knew what it was we were doing, it wouldn't be called research, would it?" --Albert Einstein --------------------------------- New Yahoo! Messenger with Voice. Call regular phones from your PC and save big.