Anyone know what is causing "asynch descriptor resize" wait events on 11gR2.(11.2.0.1)..on a test database which is mostly idle? Linux RH 4 - 64bit I can only find a limited amount of information on MOS and hardly anything in the Internet. Hanging in SQLPLUS when querying dba_autotask_client which led me to search for wait events. thanks April Sims SELECT IOUG Contributing Editor http://aprilcsims.wordpress.com http://www.twitter.com/aprilcsims Oracle Database 11g – Underground Advice for Database Administrators http://www.amazon.com/Oracle-Database-Underground-Advice-Administrators/dp/1849680000/ref=sr_1_1?ie=UTF8&s=books&qid=1272289339&sr=8-1#noop OCP 8i, 9i, 10g DBA Southern Utah University sims@xxxxxxx 940-484-4276