I think you'll need to specify a QNAME of SYSVSAM for your purposes;.  SYSDSN 
might not work for VSAM.   You might want to experiment a little to make sure.

Keven

> On Feb 15, 2016, at 07:52, [email protected] <[email protected]> wrote:
> 
> Thanks Mars looks like a good starting point.
> 
> 
> 
> 
> I have a program to check the enqueues for a dataset in ISPF:
> 
>         LA    R10,RNAMELEN
>         ISGQUERY ANSAREA=ANSWER,ANSLEN=ANSLEN,                        X
>               GATHERFROM=SYSPLEX,ANSDETAIL=FULL,                      X
>               SEARCH=BY_FILTER,SCANACTION=START,SCOPE=SYSPLEX,        X
>               REQINFO=QSCAN,RESUMETOKEN=RESUMETK,                     X
>               RNAME=RNAME,QNAME=SYSDSN,RNAMELEN=(R10),                X
>               RNAMEMATCH=PATTERN,RETCODE=RETCODE,                     X
>               QNAMEMATCH=SPECIFIC,RSNCODE=RSNCODE
> *
>         LA    R6,ANSWER                 Address returned area R6
>         USING ISGYQUAAHDR,R6            Map the header
> *
> *
> ISGLOOP0 L     R3,ISGYQUAAHDRFIRSTRECORD31      Address first record
>         L     R4,ISGYQUAAHDRNUMRECORDS         Address the count
> ISGLOOP  EQU   *
>         USING ISGYQUAARS,R3                  Map the next Resource Rec
>         TM    ISGYQUAARSFLAGS1,ISGYQUAARSRQSOMITTED    Any dropped?
>         BNO   ISGLOOP1                                 No, branch
> *
> * Requester area too small
> *
> ISGLOOP1 EQU   *
>         L     R5,ISGYQUAARSFIRSTRQ31         Address first requester
>         L     R6,ISGYQUAARSNUMRQ             Address count
> ISGLOOP2 EQU   *
>         USING ISGYQUAARQ,R5                  Map Requester area
>         MVC   ENQTYPE,=CL4'SHR '
>         TM    ISGYQUAARQFLAGS1,ISGYQUAARQCONTROL  Is the ENQ=SHR?
>         BO    ISGLOOP3                            Yes branch
>         MVC   ENQTYPE,=CL4'EXC '
> ISGLOOP3 TM    ISGYQUAARQFLAGS1,ISGYQUAARQOWNER    Is this the OWNER?
>         BNO   ISGLOOP4                            No branch
>         MVC   ENQOWNR,=CL6'USING '
>         B     ISGLOOP5                            Branch
> ISGLOOP4 EQU   *
>         TM    ISGYQUAARQFLAGS1,ISGYQUAARQMATU Is Requester using it?
>         BO    ISGLOOP5                          Yes branch
>         MVC   ENQOWNR,=CL6'WAIT  '
> ISGLOOP5 DS    0H
> *                            Is Requester Data Record Extension valid?
>         TM    ISGYQUAARQFLAGS2,ISGYQUAARQRQXVALID
>         BNO   ISGLOOP9                          No branch
>         L     R7,ISGYQUAARQRQX31                Address the area
>         USING ISGYQUAARQX,R7                    Map the extension area
>         MVC   OUTREC+47(2),ISGYQUAARQXSYSNAME   Put in the system
>         MVC   OUTREC+51(8),ISGYQUAARQXJOBNAME   Put in the jobname
>         MVC   OUTREC+61(3),ENQTYPE              Put in the ENQ type
>         MVC   OUTREC+66(5),ENQOWNR              Put in the OWNER field
>         DROP  R7
> ISGLOOP  DS    0H
> 
> Thanks,
> Mark.
> 
> -----Original Message-----
> From: IBM Mainframe Assembler List [mailto:[email protected]] 
> On Behalf Of [email protected]
> Sent: 13 February 2016 16:56
> To: [email protected]
> Subject: Would ISGQUERY be the proper macro/service
> 
> .
> I have a Started Task (STC), and sometimes a batch job will hold a VSAM 
> dataset needed by this STC. This prevents the STC from properly re-opening 
> the dataset.
> .
> Share Options are 2,3 and Transactional VSAM (RLS) is not an option.
> .
> .
> Im looking for a macro or callable service that will allow the Started Task 
> to identify the name of the batch job that has opened a VSAM dataset which 
> the Started Task needs.
> .
> .
> I started reading the description of the ISGQUERY and its various Mapping 
> Macros but i dont see where it would returns the name of a batch job that has 
> allocated a VSAM dataset. I suspect I would use GATHERFROM=SYSTEM  with 
> SCOPE=SYSTEM, since the batch processing occurs on the same LPAR as the 
> Started Task.
> 
> Is ISGQUERY the proper macro/service to accomplish this ?
> .
> Would someone provide some sample code and point me to the proper 
> macro/service to invoke.
> .
> .
> The Started Task happens to be a CICS Address Space and we would use a CICS 
> Supplied Open Exit to drive this.
> .
> .
> Paul D'Angelo
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