There was a feature for AUTOTUNING but back in 2008 IBM recommended turning it off (OA20748). I'm not sure if the issues were ever resolved but OA25072 09/2009 turns it off and disables enabling it.
F CATALOG,REPORT,CATSTATS should show what is currently in use. -----Original Message----- John Schafer We are currently reviewing all of the ICF catalog definitions in our shop. All of our catalogs are ECS defined. Any best pratice or considerations with regard to the following catalog performance options beyond the defaults when these are not specified? STRNO BUFND BUFNI FREESPACE RECORDSIZE Regards, John ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

