PJ40565: OUTAGE DUE TO TAPE ISSUE

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APAR status

  • Closed as program error.

Error description

  • See Problem Summary.
    

Local fix

  • na
    

Problem summary

  • APAR NUMBER:  PJ40565
    PRODUCT:  z/TPF
    FUNCTIONAL AREA:  TAPE I/O AND ERROR RECOVERY
    SHIPPED IN PUT:  10
    
    ABSTRACT:
    CTL-64C00 error if dump tape becomes unavailable while writing
    data from the Dump Buffer Area.
    
    PACKAGE CONTENTS:
    Source Segments:
    (C) base/cp/cefe.cpy
    
    Object Only Binaries:
    None.
    
    Configuration Independent Binaries:
    None.
    
    Support Files:
    None.
    
    OTHER BINARIES TO BUILD: YES
    (C) <sys>/obj/cctape.o
    (C) <sys>/load/CPS0.so
    
    COMMENTS:
    If the dump tape becomes unavailable while TPF is attempting to
    write out the first record for a dump that is contained in the
    dump buffer area then the recovery may repeatedly attempt to
    write that record to tape. Each time the record is retried an
    ECB is created to send message COSK0399I informing the operator
    of which tape the dump is being written to. This will deplete
    the system of resources resulting in a catastrophic CTL-64C00
    dump.
    
    This behavior was caused because the SWB to write the DBA data
    was incorrectly classified when it was created.
    

Problem conclusion

  • SOLUTION:
    The CVTOPERBLK routine in copy member CEFE of CCTAPE has been
    updated so that the DBA write will not be marked as a bypass
    aux queue SWB. This will prevent the DBA write from being
    repeatedly attempted if there is an error on the tape. TPF will
    now wait until the tape switch occurs before attempting the
    write again.
    
    COREQS: NO
    None.
    
    MIGRATION CONSIDERATIONS: NO
    None.
    
    BUILD COMMANDS AND INSTRUCTIONS: YES
    #maketpf commands for linux
    maketpf -f CPS0 cctape.o
    maketpf CPS0 link
    
    UPDATED INFORMATION UNITS: NO
    None.
    
    See your IBM representative if you need additional information.
    
    DOWNLOAD INSTRUCTIONS:
    http://www.ibm.com/software/htp/tpf/maint/maintztpf.html
    
    APAR URL:
    http://www.ibm.com/software/htp/tpf/ztpfmaint/put10/PJ40565.htm
    

Temporary fix

Comments

APAR Information

  • APAR number

    PJ40565

  • Reported component name

    Z/TPF

  • Reported component ID

    5748T1501

  • Reported release

    110

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-09

  • Closed date

    2013-01-24

  • Last modified date

    2013-01-24

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

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

Fix information

  • Fixed component name

    Z/TPF

  • Fixed component ID

    5748T1501

Applicable component levels

  • R110 PSY

       UP



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Document information


More support for:

TPF
z/TPF

Software version:

110

Reference #:

PJ40565

Modified date:

2013-01-24

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