> IBM Mainframe Discussion List <[email protected]> > > On 10/31/11 13:04, Longnecker, Dennis wrote: > > Can someone point me to the right place to find the documentation > on how to create large SVCDUMP datasets? I need to create a large > dump dataset so I can take a console dump of DB2. I keep getting > partial dumps. I see in the messages the maximum size of a dataset > is 65,535 tracks which for a 3390 is 4369 cylinders. In the z/OS > MVS diagnosis: Tools and Service Aids manual they say "IBM > Recommends using extended format sequential data sets as dump data > sets for SVC dumps......and they can hold 128 gigabytes". But the > manual doesn't give any clues on how to create them. > > > > IBM APAR II06335 talks about the subject also: " Note: With > DFSMS120 and Dynamic Dump Allocation, multi-volume EFDS format > datasets can be created for your SVCDUMP. " but doesn't give any > clues on how to create such a beast either. > > > > I've tried created the SYS1.DUMP dataset on a MOD 9 with the > contig option, but it stops at the 65,535 tracks. > > > > Any pointers appreciated. > > > > Dennis > > > > > > > You specify whether a dataset is allocated in extended format in it's > data class. I don't know off hand if SVCDUMP processing supports > DSNTYPE=LARGE, but if so that would be another option. > > -- > Mark Jacobs > Time Customer Service > Tampa, FL
In z/OS 1.13, SDUMP specifies the DSNTYPE=LARGE text unit on its SVC 99 parameters if the dump data set needs to be larger than 64K tracks. Prior to z/OS 1.13, you can use Extended Format Sequential data sets for large dumps. Such data sets must be SMS managed, and you would make the request for Extended Format in your SMS ACS routines. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
