You mentioned the segmentation offload fix (for OSA cards). I'm VERY curious to know if anyone has actually worked up the courage to turn this option back on. Are the results worth the extra Zantac required just thinking about it?
Dennis Barrett [email protected] -----Original Message----- From: Knutson, Sam [mailto:[email protected]] Sent: Wednesday, September 02, 2009 14:34 Subject: Re: OA25072 RESOLVE KNOWN ISSUES WITH CATALOG AUTO-TUNING Hi, The APAR is not flagged CATBREAKER. If this is really intended to resolve broken catalog issues it seems like it should be. If the dire symptoms you describe are being seen it seems it should be marked HIPER too. That was part of my point that this APAR has been open a LONG time to just close it and turn off the feature rather than fixing it. Even segmentation offload was eventually fixed and recommended to be enabled. The APAR text makes it sound like it was just ineffective at making an improvement or confusing. Best Regards, Sam Knutson, GEICO System z Performance and Availability Management mailto:[email protected] (office) 301.986.3574 (cell) 301.996.1318 "Think big, act bold, start simple, grow fast..." -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Pinnacle Sent: Wednesday, September 02, 2009 11:32 AM To: [email protected] Subject: Re: OA25072 RESOLVE KNOWN ISSUES WITH CATALOG AUTO-TUNING ----- Original Message ----- From: "Knutson, Sam" <[email protected]> Newsgroups: bit.listserv.ibm-main Sent: Wednesday, September 02, 2009 11:13 AM Subject: OA25072 RESOLVE KNOWN ISSUES WITH CATALOG AUTO-TUNING > http://www.ibm.com/support/docview.wss?uid=isg1OA25072 > > I have not seen any big shortcomings with Auto-Tuning here though I am > sure others have. > It seems this is throwing the baby out with the bathwater since it just > completely kills auto-tuning rather than providing a chicken switch for > customers who were unhappy. Anyone seen anything so horrible from catalog > auto-tuning you are happy IBM fired up the time machine and erased it > completely? > Sam, OA20748 has been out there for 2.5 years. IBM recommended disabling AUTOTUNING in that APAR, and I've been doing that ever since. The main problems were broken catalogs and runaway CPU in VLF. We experienced the runaway CPU problem. I'm glad you haven't had any problems, but AUTOTUNING has been BAD from day 1. Tom ==================== This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please destroy all paper and electronic copies of the original message. ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
