Re: DUMPSPACE in Coupling Facility
A nonvolatile CF will be given preference over a volatile CF by more than just the DB2 structures. It dates back to when you had stand alone CFs with built-in battery backups. Because most people do use UPS and the fact that the built in battery would not last nearly as long as your UPS power most people quit ordering the built-in backup battery/power source. You can change the setting from the HMC buy selecting your CF imagine and going into "OPERATING SYTEM MESSAGES". The command is "MODE NONVOLATILE" and the expected response is "CF01011 MODE IS NONVOLATILE. There is also a command to display the mode from the HMC: "D MODE". Once you change the mode to be nonvolatile, it should retain that setting even over a POR but I have seen where some MCL upgrades would cause it to go back to the volatile setting so we always check after any MCL upgrade. -- 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
Re: DUMPSPACE in Coupling Facility
The use of Volatile really (in my opinion) deals more with DB2 Data Sharing than anything else. If you set the CF to Volatile YES - the DB2 Data Sharing Regions put out a message DSN7507I :DSNQ DSN7LSTK 737 SCA STRUCTURE DSNSB0Q_SCA IS ALLOCATED IN A VOLATILE STRUCTURE. This makes my DB2 guys crazy. So we are switching our CF to NON-Volatile just to take away the messages. To us, the difference was a phone call at 2am in the morning. ;-) Even though the CF is backed up by a UPS and that is what we cared about; just not the DB2 Data Sharing Regions. Lizette > >In addition to Sam's question regarding DUMPSPACE, I have a question as >well. What about VOLATILE? Years ago, ours were set to NO. Is this wrong? > -- 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
Re: DUMPSPACE in Coupling Facility
In addition to Sam's question regarding DUMPSPACE, I have a question as well. What about VOLATILE? Years ago, ours were set to NO. Is this wrong? Brian On Thu, 26 Oct 2006 12:29:46 -0400, Knutson, Sam <[EMAIL PROTECTED]> wrote: >I will make a true confession... I bet that gets caught by net nanny >software:-) In hopes of learning something my Coupling Facilities all >have what was the default in our policy from long ago not even close to >5%. > (snip) > >VOLATILE: YES > (snip) -- 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
Re: DUMPSPACE in Coupling Facility
I will make a true confession... I bet that gets caught by net nanny software:-) In hopes of learning something my Coupling Facilities all have what was the default in our policy from long ago not even close to 5%. NAMED CF00 COUPLING FACILITY SPACE UTILIZATION ALLOCATED SPACE DUMP SPACE UTILIZATION STRUCTURES: 1630208 KSTRUCTURE DUMP TABLES: 0 K DUMP SPACE:2048 K TABLE COUNT: 0 FREE SPACE: 29752320 K FREE DUMP SPACE: 2048 K TOTAL SPACE: 31384576 K TOTAL DUMP SPACE: 2048 K MAX REQUESTED DUMP SPACE: 0 K VOLATILE: YESSTORAGE INCREMENT SIZE:256 K CFLEVEL:14 CFCC RELEASE 14.00, SERVICE LEVEL 00.27 BUILT ON 07/17/2006 AT 09:43:00 COUPLING FACILITY HAS ONE OR MORE DEDICATED PROCESSORS CF REQUEST TIME ORDERING: REQUIRED AND ENABLED COUPLING FACILITY SPACE CONFIGURATION IN USEFREE TOTAL CONTROL SPACE: 1632256 K 29752320 K 31384576 K NON-CONTROL SPACE: 0 K 0 K 0 K NAMED CF02 COUPLING FACILITY SPACE UTILIZATION ALLOCATED SPACE DUMP SPACE UTILIZATION STRUCTURES: 7409920 KSTRUCTURE DUMP TABLES: 0 K DUMP SPACE:2048 K TABLE COUNT: 0 FREE SPACE: 19778816 K FREE DUMP SPACE: 2048 K TOTAL SPACE: 27190784 K TOTAL DUMP SPACE: 2048 K MAX REQUESTED DUMP SPACE: 0 K VOLATILE: YESSTORAGE INCREMENT SIZE:256 K CFLEVEL:14 CFCC RELEASE 14.00, SERVICE LEVEL 04.05 BUILT ON 07/17/2006 AT 09:35:00 COUPLING FACILITY HAS ONE OR MORE DEDICATED PROCESSORS CF REQUEST TIME ORDERING: REQUIRED AND ENABLED COUPLING FACILITY SPACE CONFIGURATION IN USEFREE TOTAL CONTROL SPACE: 7411968 K 19778816 K 27190784 K NON-CONTROL SPACE: 0 K 0 K 0 K NAMED CF01 COUPLING FACILITY SPACE UTILIZATION ALLOCATED SPACE DUMP SPACE UTILIZATION STRUCTURES: 704 KSTRUCTURE DUMP TABLES: 0 K DUMP SPACE:2048 K TABLE COUNT: 0 FREE SPACE: 9664768 K FREE DUMP SPACE: 2048 K TOTAL SPACE: 16706816 K TOTAL DUMP SPACE: 2048 K MAX REQUESTED DUMP SPACE: 0 K VOLATILE: YESSTORAGE INCREMENT SIZE:256 K CFLEVEL:14 CFCC RELEASE 14.00, SERVICE LEVEL 04.05 BUILT ON 07/17/2006 AT 09:35:00 COUPLING FACILITY HAS ONE OR MORE DEDICATED PROCESSORS CF REQUEST TIME ORDERING: REQUIRED AND ENABLED What is interesting is that I have never seen MAX REQUESTED DUMP SPACE be non-zero. We have never had any information not in a dump that was an issue related to this. I read the referenced section in Setting Up a Sysplex but it didn't shed any light on this. I find it hard to believe that none of the z/OS components or IBM subsystems here make SDUMP that include allocated structures. Can anyone explain this or point to another manual that provides an explanation. How important is the 5% guideline? We have done a LOT of problem determination with IBM and it has never been an issue. Have we just been lucky? Best Regards, Sam Knutson, GEICO Performance and Availability Management mailto:[EMAIL PROTECTED] (office) 301.986.3574 "Think big, act bold, start simple, grow fast..." -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Vernooy, C.P. - SPLXM Sent: Thursday, October 26, 2006 3:16 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: DUMPSPACE in Coupling Facility Your bible for CF's and Sysplexes always was, is and will be: SA22-7625, Setting up a Sysplex. Ch 4.2.2.6 Determining the Amount of Coupling Facility Dump Space, says: "IBM recommends that you specify 5% of the available storage in a coupling facility for dump space." Kees. This email/fax message is for the sole use of the
Re: DUMPSPACE in Coupling Facility
Your bible for CF's and Sysplexes always was, is and will be: SA22-7625, Setting up a Sysplex. Ch 4.2.2.6 Determining the Amount of Coupling Facility Dump Space, says: "IBM recommends that you specify 5% of the available storage in a coupling facility for dump space." Kees. "munif sadek" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > I have been asked to increase DUMPSAPCE in our coupling facility (% Storage > allocation vise - existing dumpspace is 1% of coupling facility total > space), although we have not seen any problems. Is there any IBM > recommedation / ROTs. > > regards, munif.. > > -- > 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 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. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ** -- 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
DUMPSPACE in Coupling Facility
I have been asked to increase DUMPSAPCE in our coupling facility (% Storage allocation vise - existing dumpspace is 1% of coupling facility total space), although we have not seen any problems. Is there any IBM recommedation / ROTs. regards, munif.. -- 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
