An IMS Control Region Wait State might occur when a DELTA List is executing a DEDB RELOAD(s) while IMS /DBR, /STA, or /STO AREA commands are issued.

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    PRODUCT:

    DELTA IMS DB/DC


    APPLIES TO:

    DELTA IMS DB/DC



    PROBLEM:

     

    An IMS Control Region Wait State might occur when a DELTA List is executing a DEDB RELOAD(s)

      

    while IMS /DBR, /STA, or /STO AREA commands are issued.

      

     

      

    The problem causes the IMS control region to hang. As result, you must restart the IMS control region to resolve the wait state.

      

     

      

     

      

    The problem occurs because of a small timing window in DELTA IMS where

      

    DEDB RELOAD processing (running in CMTI ITASK)

      

    waits to be posted back from DBFCST00 (running in FP CST ITASK) while also holding the ALOCK latch

      

    in exclusive mode.

      

    In addition, module DBFARD40 (running under the FP CST ITASK) waits to get the ALOCK latch in share mode,

      

    and goes into IWAIT, which prevents other AWE requests from being serviced in the FP CST ITASK.

      

    IMS then goes into a wait state.

      

     

     


    SOLUTION:

     

    Legacy ID:KA423716

      

    The following table lists the PTF that resolves this issue. You must restart IMS (any type of restart) to make the PTF change effective.

      

     

      

    Version 6.7.00 - PTF BQQ0713 - Defect QM001869982, Solution SLN000015186485, Knowledge Article KA423716.  

      

     

      

     

      

     

      

     

      

     

      

     

      

     

      
    Related Products:  
       
    1. DELTA IMS VIRTUAL TERMINAL
    2.  
    3. DELTA IMS for DBCTL

     


    Article Number:

    000082641


    Article Type:

    Solutions to a Product Problem



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