There is no IPL requirement to switch from recording to MANx to recording to z/OS Logger.
This is an option that not only would improve performance could save general purpose CPU if you modify your processing. As an example. Typically shops record to MANx, then immediately dump to a temporary GDG, then daily consolidate the temporary GDG to a daily GDG, etc. You can record to z/OS Logger and even if you do nothing else skip the dumps from MANx to temporary data set which usually occurs at least one or more times during a peak CPU period. So if IBM had only a limited amount of time to invest in improvements in SMF logging would it be better long term to invest in relieving the constraint on SMF asid data set recording supporting multiple MANx files with different CISIZEs or feature, function, and performance enhancements in SMF logging to z/OS Logger? I think it makes sense they don't invest a lot of time to improve MANx support. As an aside Barry Merrill has written about this on a recurring basis and supplies SAS code with MXG (ANALSMF) to let you take a detailed look at how SMF is written at your site. If you have SAS and z/OS MXG still is priceless http://www.mxg.com/news/news25.asp http://www.mxg.com/ If you want to put some time into updating your SMF recording consider whether you might get more bang for your buck migrating to Logger rather than reallocating all your MANx data sets. http://publib.boulder.ibm.com/infocenter/zos/v1r13/index.jsp?topic=/com.ibm.zos.r13.ieag200/clorox.htm Best Regards, Sam Knutson, GEICO System z Team Leader 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 Elardus Engelbrecht Sent: Wednesday, October 10, 2012 5:56 AM To: [email protected] Subject: Re: Change MANx CISIZE on the fly Walter Marguccio wrote: >I tried myself on ours, and when tried to add a brand new MANx with a bigger >CISIZE using the T SMF=xx, the system issues IEE396I. IEE396I. Yes, now that message text makes sense to me. :-( That IPL requirement is utter <censored>!!! Thanks Walter for sparing me unneeded trouble. ;-D I see all my MANx are all too small... I now wonder what was the rationale for such small CI sizes of those MANx I inhereted... Backward compatibility was one bad excuse I read somewhere... Groete / Greetings Elardus Engelbrecht ==================== 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: INFO IBM-MAIN
