John, Likely to be the RECO process and a two-phase commit thing. select table_name from dictionary where table_name like '%PENDING%' or table_name like '%2PC%' and nose there. HTH, Stephane Faroult RoughSea Ltd http://www.roughsea.com On Thu, 23 Sep 2004 13:03 , 'Hatzistavrou John' <John.Hatzistavrou.sema@xxxxxxxxxxxxxx> sent: Dear All, I have the following problem Environment : Sun OS 5.8, Oracle 8.1.7.4 A transaction seems stacked on a rollback segment, however there are no pending tasks, no active transactions. Even when I shutdown the instance and start it up I have one transaction on a rollback segment that I need to drop. Is there any way from xacts to find which is this transaction(what I have tried to do is to dump the rollback header from there checked which is the transaction table entry that is active and using the dba I have extracted the information (dbms_utility ) pertaining to the file and block address of this dba.Then I have dump the contents of this block to check the undo info) Yannis Hatzistavrou -- //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