David, kks is Kompilation Layer function to Find the Bounded Cursor. Typically related to parsing (hard) which sometimes calls kksscl to scan the child list on those cursors when the cursors are shared. What is your cursor_sharing set to and do you see excessive waits? Or the question is just acadamic? -- Best Regards, K Gopalakrishnan Co-Author: Oracle Wait Interface, Oracle Press 2004 http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/ Author: Oracle Database 10g RAC Handbook, Oracle Press 2006 http://www.amazon.com/gp/product/007146509X/ -- //www.freelists.org/webpage/oracle-l