Scott, 

As suggested earlier, look into the ISGQUERY macro. There are examples in 
the Authorized Assembler Services Reference. Here is some additional 
guidance:

- Use SEARCH=BY_FILTER with specific match on Qname and Rname for better 
performance 
  - Qname will be SYSDSN 
  - Rname will be the dataset name
  - If you know the SCOPE then specify that too. If you want it to work 
generically, leave it off. 
- JOBNAME is an optional filter to restrict results to a particular 
jobname which would be the one you expect to get the ENQ. There are other 
filter parameters too you might want to look into. 
- If you expect to run the query program on another system than the target 
job in the same sysplex, code GATHERFROM=SYSPLEX. GATHERFROM=SYSTEM 
performs better than GATHERFROM=SYSPLEX in GRS Star.
- You could add REQUESTERLIMIT to limit the number of RQ records (owner or 
waiter information) returned by ISGQUERY

-Joe

Joe Gentile
z/OS GRS and RSM Development
(845)435-2184 (T/L 295-2184)
jwgen...@us.ibm.com


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