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DFHSM0001 0C4 AKEA at offset 0694 in DFHSMPP when using IAM

Question & Answer


Question

Why am I receiving message DFHSM0001 with an abend0C4 abendAKEA in DFHSMPP during startup of my CICS region when running with vendor product IAM from Innovation Data Processing? I received the following error message, and the region would not initialize:

DFHSM0001 AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET X'0694' IN MODULE DFHSMPP

Answer

Reviewing a dump from the program check showed the problem to be with Register 7. It is supposed to be a pointer to a PPX or Pagepool Extent Control area, there has been corruption of our PPX control blocks leading to this program check. A normal PPX should have the following eyecatcher:

 | .&>DFHSMPPX      |
 | ESDSA   .o...p(. |
 | .....\.......=.. |

But one of our PPX control blocks have been overlaid, and does not have the correct eyecatcher above. Backing up from this area, to the page boundary I found an IAM eyecatcher:

    -------------------  
    | IAMV.........o&. | 
    | .-.{............ | 
    | ................ | 
    | .o .....&.&..... | 
    -------------------  

It appears IAM has overlaid our PPX control block. Contact Innovation Data Processing for further assistance.

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Product Synonym

CICS/TS CICSTS CICS TS CICS Transaction Server

Document Information

Modified date:
23 November 2015

UID

dwa1239749