Just one more revision of the formula and then I'll stop spamming the list on this topic in case nobody else is interested, but I just want to get it corrected first. This formula is more accurate because it's based on SESSIONS instead of PROCESSES and accounts for variable DB_BLOCK_SIZE values: db_file_multiblock_read_count=(db_cache_size/db_block_size/sessions)*.95 Regards, Brandon Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. -- //www.freelists.org/webpage/oracle-l