"Tom Russell" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>. .. > >this has been an IBM recommendation for over 20 years. > > I dunno. I never liked the recommendation. If you run out of space in the > Common Page DS you will crash with a wait state. It seems to me that with > a PLPA page DS that is a bit bigger than your PLPA and a Common Page DS > that is a comfortable cushion bigger than your CSA, then you avoid the > risk of an unscheduled failure. The last time I was involved in a > postmortem of this type of failure the customer had been running with a > common page DS that was too small to support CSA because the PLPA had > increased and stole the space. Six months later, when they started a third > copy of IMS, the CSA went from 75% allocated to wait state. >
This is more a matter of (not) guarding critical system indicators. However large you make it, it will become too small at some point in the future, so you should monitor it. The 75% should have rung alarm bells long before... Kees. ********************************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ********************************************************************** ---------------------------------------------------------------------- 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
