Douglas, Depending on what you call as 'inter node communicate' , AWR has the information about the global enqueue get time, average time to fabricate, flush,send CR/CUR blocks. AWR also has statistics about the messaging traffic and message latency. If you are looking for a specific session/program, you can look at V$SESSTAT and look for the GC statisitcs. -Gopal On Tue, Mar 18, 2008 at 11:21 AM, Douglas Cowles <dcowles@xxxxxxxxxx> wrote: > > > If I want to see how much time Oracle spent on inter-node communicates VS > user work, do you know how to calculate this from AWR reports? > > Doug Cowles -- 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