I've collected some info and AWR graphs into one(actually, two) places: http://laimisnd.wordpress.com/2012/10/05/excessive-transaction-tables-consistent-reads-undo-records-applied-in-11-2-0-3/ http://laimisnd.wordpress.com/2012/10/05/excessive-transaction-tables-consistent-reads-undo-records-applied-in-11-2-0-3-part-ii/ Since we are damn happy to easily reproduce the problem (but in one test environemnt only!) I'am going to clone the database (and keep a snapshot of it) and try to deal with Oracle support. -- //www.freelists.org/webpage/oracle-l