BPXWDYN Help needed

Narender Sajnani · New User Joined: 28 Jul 2012 Posts: 11 Location: India

Hi, I am using the BPXWDYN utility to allocate a PS dataset with the following arguments -

alloc fi(SYS00006) da('DUMMY.TEST.PS') new reuse recfm(fb) lrecl(80) dsorg(ps) space(10,5) cyl

All goes fine - but the default allocation is always LRECL=1028, RECFM=VB and BLKSIZE=6144

How can I get allocated a PS file of lrecl 80 bytes? Pleas advise.

I have tried combination of parameters in every order from this documentation
publib.boulder.ibm.com/infocenter/zos/v1r12/index.jsp?topic=%2Fcom.ibm.zos.r12.bpxb600%2Fwdyn.htm

Robert Sample · Posted: Fri Sep 14, 2012 12:14 am

Have you takled to your site support group to ensure that there's no system overrides changing your default allocation parameters, and that DUMMY is a valid high level qualifier for your site? I just tested this BPXWDYN allocation and it worked fine (<hlq> changed from the actual value but all other parameters are exactly as coded and passed to BPXWDYN):

Narender Sajnani · New User Joined: 28 Jul 2012 Posts: 11 Location: India

Hi Bob,

Thanks for replying. I just tried back in the same order of keywords - we are using BPXWDYN using a Java program -

DEBUG com.ca.mfui.config.util.DatasetUtils - alloc fi(SYS00006) da('<hlq>.TEST.PS') new catalog space(1,1) cyl Lrecl(50) blksize
0) recfm(fb) unit(sysda)
DEBUG com.ca.mfui.config.util.DatasetUtils - BPXWDYN failed; S99ERROR/S99INFO = 0x410/0x0 RC=68157440 (0x4100000)

Using REUSE keyword - the CC=0 however LRECL and RECFM are overidden to 1028 AND VB respectively.

Robert Sample · Posted: Fri Sep 14, 2012 12:43 am

The REUSE option is used to deallocate a file already allocated -- hence the LRECL and RECFM are being picked up from the file allocated to DDNAME SYS00006 before your code runs.

If you allocate to a unique DDNAME (try SXDUMMY9, for example) then the LRECL and RECFM should be set correctly, and the REUSE will not be necessary.

Narender Sajnani · New User Joined: 28 Jul 2012 Posts: 11 Location: India

Hi Bob,

We tried a unique DDNAME as well but still bumping upon LRECL=1028 and RECFM=VB.

Doing the same through REXX and TSO ALLOCATE command results in accurate results.

Could this be because we are using JZos launcher (JVMLDM76) to run a Java program (jar file) and that invokes a BPXWDYN call? I wouldn't think it is enforced by site's support group else the below REXX call would have failed too

/* rexx */
allocstr = "alloc dd(userdd01) dsn('<hlq>.test.ps')",
"new catalog reuse release",
"recfm(f,b) unit(sysda) dsorg(ps) lrecl(80) blksize(500)"
call bpxwdyn(allocstr)
------------------

This is what we are issuing in the Java program -

String totalArgs = "alloc fi(" + targetDD + ") da('" + targetDSN + "') reuse new " +
"dsorg(ps) lrecl(80) recfm(f,b) tracks space(100,50) blksize(800) catalog msg(wtp)";

// allocate the output dataset using BPXWDYN
ZFile.bpxwdyn(totalArgs);
// free the ddname associated with the dataset
ZFile.bpxwdyn("free fi(" + targetDD + ") msg(wtp)");

enrico-sorichetti · Posted: Fri Sep 14, 2012 6:50 pm

do not post the same question on multiple forums

duplicate of
ibmmainframeforum.com/viewtopic.php?f=14&t=8158

a moderator will please lock the topic...

my profile says <super moderator> ... looks like I got promoted

,
but seems also that my profile is clobbered, so I cannot do any <moderators> task

( McMillan already knows about it )

Narender Sajnani · New User Joined: 28 Jul 2012 Posts: 11 Location: India

Hi Enrico - please close the other topic as Bob and I are already in conversation on this since yesterday.

Robert Sample · Posted: Fri Sep 14, 2012 8:01 pm

Use MSG(WTP) to output the messages from the dynamic allocation to see if they provide a clue about what is going on.

The only other thing I can suggest is to open a PMR with IBM.

dick scherrer · Posted: Fri Sep 14, 2012 8:50 pm

Hello and welcome to the forum,

Please refer to Mr. Sample as Robert - Not Bob.

Narender Sajnani · New User Joined: 28 Jul 2012 Posts: 11 Location: India

Thanks Robert. We actually found that there were no issues with respect to BPXWDYN dynamic allocation of this dataset. We were using Buffered read and write to copy contents into this created dataset and that is when default attributes were getting applied. We are now using ZFile class and with recommended DCB options.

Thanks all for your suggestions.