> You wouldn't want to be doing a large number of TCLOSEs per run... on >the order of 1's or maybe 10's but not 100's and certainly not 1000's. >You'll be swatting a gnat with a nuclear device in short order with >this approach. (These statistics just aren't that important.)
I agree to doing a relative few TCLOSEs. 1 per 100,000 gets/puts is probably sufficient. Are the statistics ever important? There's always an exception to the rule (except when there's not.) Case in point - Batch job using 100 big VSAM files. Code uses common I/O module for all files. After executing for 16 hours, user declares this is a problem. Problem has something to do with buffers and numbers of sequential and random reads, inserts, deletes. The stats for this problem are critical to fixing it. Unfortunately, they are not recorded in the catalog, and are also missing from the type-64 records. Which file needs more buffers? Which files received updates and now need to be restored before restarting the job? Which files have the most activity? What kind of activity? The current approach (without TCLOSE) will have to be to just restore all files and rerun the job to let it complete. Only then can someone examine the statistics. CONFIDENTIALITY NOTICE: This electronic transmission (including any accompanying attachments) is intended solely for its authorized recipient(s), and may contain confidential and/or legally privileged information. If you are not an intended recipient, or responsible for delivering some or all of this transmission to an intended recipient, be aware that any review, copying, printing, distribution, use or disclosure of the contents of this message is strictly prohibited. If you have received this electronic message in error, please contact us immediately by electronic mail at [EMAIL PROTECTED] or notify us immediately by telephone at 1-800-345-2021 or 816-531-5575 and destroy the original and all copies of this transmission (including any attachments). Thank you. ---------------------------------------------------------------------- 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
