Hi, You have GV$TRANSACTION and for the rollback stats, GV$ROLLSTAT (both includes instance number) ¿is these what are you looking for? regards, I do not seem to find a way to list all active transactions in the different nodes of the cluster from the connected instance (10.2.0.2). I do not see a view like GV$ROLLNAME which can give me the names of the Undo segments in different instances. We have only V$ROLLNAME. I understand undo segments are local to each instance, but having a centralized view could have been handy. Do you guys have any work around for this? Thanks, Shiva