CA MII: GRS ENQMAXA / ENQMAXU Interactions

Products

• MIM Resource Sharing (MIM)
• MIM Data Sharing (MII)
• MIM Tape Sharing (MIA)
• MIM Message Sharing (MIC)

Issue/Introduction

During IPL it is possible to get the following messages :

....

ISG371I ISGADMIN ISSUED FROM JOBNAME: SMSPDSE ASID: 0008. 686

  REQUEST(SETENQMAX) MAXTYPE(AUTHORIZED) MAXVALUE(X'002DC6C0')

  SPECIFIED.

  PREVIOUS VALUE: X'00000000'.

IGW040I Maximum Enqs set to 3,000,000 from 250,000

....

Are ENQMAX  and ENQMAXU new values  honored by MII ? 

 

Environment

Release : all supported releases 

Component : MII

Resolution

What is ENQMAXA?

•The maximum number of concurrent authorized ENQ requests that can be made within a single address space •Default is 250,000 What is ENQMAXU? •The corresponding maximum for unauthorized ENQ requests with an address space •Default: 16,384 What is the purpose of these maximums? •Protect against inadvertent looping of ENQ requests •ABEND538 results when a maximum is exceeded •Message ISG368E warns when maximum is being approached •This is NOT directly related to a GRS Virtual Storage Constraint

Resolution Summary

These options are enforced by GRS that will always be active in the system, even when our GDIF is installed.

So, they will still work in a GDIF environment and nothing should be done for GDIF.