we are getting a lot of traces files with the following information, does anybody know why this traces appear and how to supress them?
<quote> Solution Prevent SMON from offlining idle Undo Segments using event 10511. Set the following parameter in init.ora/spfile
event="10511 trace name context forever, level 2"
Then restart the database.
After the first onlinining of an Undo Segment, it will never be offlined and re-onlined. So we will only get the "US" serialization once (on the first online after a db restart.)