PM89388: MEMBER ONLINE CHANGE FOR DBD CHANGED FROM HAVING FF PCBS TO ONLY HAVING GSAM PCBS FAILS DFS0651W

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APAR status

  • Closed as program error.

Error description

  • Attempting a ACB member online change results in message
    DFS0651W ERROR 07 READING IN TO FW157ML  FROM ACBLIB
    PSB was changed from having DB/GSAM PCBs to only having GSAM
    PCBs when the error was encountered.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: ALL IMS V11 users of member online change.   *
    ****************************************************************
    * PROBLEM DESCRIPTION: MSGDFS0651W error 7 occurs during IMS   *
    *                      initialization and/or scheduling of a   *
    *                      PSB that is changed using member online *
    *                      change.  The problem occurs when        *
    *                      changing a PSB from containing DBPCBs   *
    *                      to containing no DBPCBs.                *
    ****************************************************************
    * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
    ****************************************************************
    DFS0651W validation error 07 occurs during scheduling of a PSB
    or during IMS initialization after changing a PSB from
    containing DBPCBs to containing no DBPCBs using member online
    change ( MOLC ). During MOLC commit phase code in module
    DFSMOLS0 routine COPY copies the changed members from the
    staging ACBLIB to the active ACBLIB.  A PSB with no DBPCBs
    contains one record.  An attempt to read the second record of
    the PSB that contains no DBPCBs from the staging ACBLIB code
    after label COPY0400 detects the end of the member.  When the
    end of the member is detected SYNAD exit EODAD is driven during
    the CHECK macro and a branch is made to label COPYEOD.  As a
    result of branching to routine COPYEOD the TTR of the previous
    PSBs intent list is residual in field MOWTTRI.  Code after label
    COPY0600 moves the TTR of the current PSB and the intent list
    TTR of the prior PSB to field MBRTTR and MBRTTRI respectively.
    Since field MOWTTRI is not cleared the TTR of the prior PSBs
    intent list is stored into the PDS BLDL member list field
    MBRTTRI.  Further in the commit phase code in routine REFRPDIR
    is called to refresh the PDIRs that underwent a change.  After
    label PTTR350 the TTR of the prior PSBs intent list is stored
    from the PDS BLDL list into PDIRDMBS.  When the PSB is scheduled
    or is being loaded during IMS initialization the PSB and intent
    list are read from the active ACBLIB.  The incorrect TTR value
    in PDIRDMBS is used to read the intent list from the active
    ACBLIB into the ACB I/O area.  During IMS initialization in
    module DFSXRBLI after label XRBB0020 and/or during PSB
    scheduling in module DFSDBLI0 after label DBLI0020 a compare is
    made between the intent list length in PDIR field PDIRBFR with
    the value at offset zero into the ACB I/O area.  Since an
    invalid TTR value is used to read a record from the ACBLIB and
    is used as an intent list the size in the PDIR and the size at
    offset zero do not match.  As a result DFS0651W validation error
    07 will occur.
    
    Additional keywords: INIT OLC PHASE(PREPARE) TYPE(ACBMBR)
                         INIT OLC PHASE(COMMIT)
    

Problem conclusion

  • GEN:
    KEYWORDS:
    
    *** END IMS KEYWORDS ***
    
    ************
    * DFSMOLS0 *
    ************
    
    Code has been added to module DFSMOLS0 in routine COPY after
    label COPY0600 to clear field MOWTTRI of the intent list TTR
    value.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PM89388

  • Reported component name

    IMS V11

  • Reported component ID

    5635A0200

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-05-20

  • Closed date

    2013-07-09

  • Last modified date

    2013-08-02

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PM91721 PM91722 UK95695

Modules/Macros

  • DFSMOLS0
    

Fix information

  • Fixed component name

    IMS V11

  • Fixed component ID

    5635A0200

Applicable component levels

  • R100 PSY UK95695

       UP13/07/12 P F307 ½

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



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Document information


More support for:

IMS

Software version:

100

Reference #:

PM89388

Modified date:

2013-08-02

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