On Tue, 17 Apr 2007 14:12:13 -0400, Thompson, Steve <[EMAIL PROTECTED]> wrote:
>-----Original Message----- >From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On >Behalf Of Mark Zelden >Sent: Tuesday, April 17, 2007 9:57 AM >To: IBM-MAIN@BAMA.UA.EDU >Subject: Re: Maximum PS dataset size > ><SNIP> >It depends on a setting in IGDSMSxx. The new default in z/OS 1.8 is >to allow large format sequential data sets to be used without changes >to the DCBE macro. But that doesn't mean SAS can use them without >changes. I think programs that use note/point don't work without >changes. ><SNIP> > >This only works for a Wanna-Be large (DSNTYPE=LARGE). If the D/S has >more than 64K tracks on any volume, then it doesn't work -- If the first >volume is that way, you will get an ABEND S213, if it is on a subsequent >volume, then ABEND S737. > <snip> Then that sounds like the old default of BLOCKTOKENSIZE(REQUIRE) being coded in IGDSMSxx (but the default could be changed in z/OS 1.7). This from "z/OS 1.8 DFSMS Using Data Sets": BLOCKTOKENSIZE(REQUIRE) in IGDSMSxx in SYS1.PARMLIB - Every OPEN for a large format data set requires the BLOCKTOKENSIZE=LARGE parameter on the DCBE macro, unless the data set contains n more that 65 535 tracks on each volume and the OPEN is either EXCP, BSAM or QSAM, or for update using BSAM or QSAM BLOCKTOKENSIZE(NOREQUIRE) in IGDSMSxx in SYS1.PARMLIB - Applications can access large format data sets under more conditions without having to signify BLOCKTOKENSIZE=LARGE on the DCBE macro. The applications and data sets must meet any of the following conditions: o The access method is QSAM or it is BSAM without the NOT or POINT macros. o The access method is BSAM with the NOTE or POINT macros (MACRF=xP is coded) and the data set has no more than 65535 tracks the volume and the OPEN option is INPUT or UPDAT. o The access method is EXCP (MACRF=E is coded) and the data set has no more than 65535 tracks on the volume an the OPEN option is INPUT. BLOCKTOKENSIZE(NOREQUIRE) is the default if that system option is not specified. OPEN will issue an ABEND 213-10 for large format sequential data sets if the access method is not QSAM, BSAM, or EXCP. OPEN will issue an ABEND 213-14, 213-15, 213-16, or 213-17 and EOV will issue ABEND 737-44 or 737-45 if the application program cannot access the whole data set on the volume (primary, secondary, or a subsequent volume). -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group: G-ITO mailto:[EMAIL PROTECTED] z/OS and OS390 expert at http://searchDataCenter.com/ateExperts/ Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.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
