SVCDUMPs can go to SYS1.DUMPx or a dynamic allocation based on your settings in z/OS
Look at the mvs command for Dump Datasets (DD) for what your shop is using. See this link: https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieag100/dumpds.htm SVC Dumps can contain as much or as little as specified. Some products dump a large amount of control blocks (Think DB2) So just a few. The Dump process has a Dataspace it dumps to. So the process is fast. Once the Dump goes to the dataspace, it is then dumped to your designated SVC Dump dataset A quick search on the www.ibm.com for SVCDUMP DD pulls up this link https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieav100/seqdat.htm It should be a good starting point. How SVCDUMP behaves is going to be dependent on how you have it set up. There is not a one size fits all process. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Jake Anderson > Sent: Tuesday, August 08, 2017 6:47 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: SVCDUMP consideration > > Hi > > General questions. Since when we set SAD for zOS we keep that based on the > size of Real storage. > > When we are setting up an SVCDUMP for a particular product. How does that > dumping takes place ? Is it only the control block occupied by the specific > product ? Or it scans the entire RSM dedicated to the OS ? > > On 08-Aug-2017 3:56 PM, "Elardus Engelbrecht" < > elardus.engelbre...@sita.co.za> wrote: > > > Jake Anderson wrote: > > > > >Is there any constraint when we are taking SVCDUMP ? Are there any > > >CPU > > spike due to SVCDUMP ? > > > > It depends. Sometimes you get a CPU spike or something slows down your > > system. YMMV of course. > > > > It also depends on how the application or job is handling the dump itself. > > > > > > >Generally what are the factors needs to be considered while taking > > SVCDUMP ? > > > > Check Kees good reply to you. The command he gave is a good starting point. > > > > Also look in your PARMLIB to see how your DD and CD commands are setup. > > These commands are usually in COMMNDxx or IEACMDxx. > > > > Depending on the dump, you may need to add the right DD statement to > > your STC or job ___before__ taking a dump. > > > > Are you also going to set a SLIP? > > > > Groete / Greetings > > Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
