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