I have a ver big Insert using APPENd hint running on Database A and it is
selecting data from Database B using Dblink from multiple Tables with lots of
joins/subqueries and inserting several million rows (around 5-10 Mil). It
failed few time with ORA-0155 error. 1. Does that mean issue with UNDO on
Database A or B?2. Is there way to troubleshoot and get some sizing estimate
for UNDO on Database A or Database B(Based on Point 1) that give some clear
picture like quering v$undostat or so if the issue happened today and Undostat
have anyway data for few days.
Thanks for the time
Sanjay
