Don't have access to a system at the moment but I think you need to do a join with v$buffer_pool. I believe that in x$bh there is a column called buf# which should lie between the low and high buffer numbers in v$buffer_pool for both pools (KEEP and RECYCLE). Hope that helps -Fairlie Christo Kutrovsky <kutrovsky.oracle@xxxxxxxxx> wrote: Does anyone know how to differentiate between keep and recycle pools in v$bh? Seems like that they are included there but I am not 100% sure as the numbers don't add up properly. Anyone has experience with this? -- Christo Kutrovsky DBA Team Lead The Pythian Group - www.pythian.com I blog at http://www.pythian.com/blogs/ -- //www.freelists.org/webpage/oracle-l Fairlie Rego Senior Oracle Consultant http://el-caro.blogspot.com/ M: +61 402 792 405 --------------------------------- Search 1000's of available singles in your area at the new Yahoo!7 Dating. Get Started.