Chuck, KO is Kernel Object Layer. L is the Language functions (mostly C) . So it is in general (!) something related to Kenel Object_layer (c)Languge functions. :) BTW optimizer functions are defined in KK (Kenen Kompilation layer). On 10/4/07, Charles Schultz <sacrophyte@xxxxxxxxx> wrote: > > Thanks. I found one bug (*5058318*). > > What does kolccst mean? I am assuming that KO is the same for all those. > Kernel Operations? Kernel Optimizer? > -- 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/