Hi > This seems to happen (at least in some versions) when a (hard) parse causes > recursive SQL execution (for data dictionary access, FGAC predicate > generation etc) ... Yeap, also dynamic sampling leads to this behaviour... Cheers, Chris Antognini Troubleshooting Oracle Performance, Apress 2008 http://top.antognini.ch -- //www.freelists.org/webpage/oracle-l