IBM Support

PI95513: JZOS ZFILE.READJFCB MEMORY LEAK

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APAR status

  • Closed as program error.

Error description

  • Error Message: A JZOS ZFileException with STORAGE failure may
    occur for an application that calls JZOS ZFile.readJFCB
    extensively.
    .
    Stack Trace: com.ibm.jzos.ZFileException: DD:SYS00152: BSAM
    RDJFCB failed; STORAGE
    OBTAIN for 24-bit memory failed; errno=132 errno2=0x0 last_op=
    
    0 errorCode=0x0
    
    at com.ibm.jzos.Bsam.rdjfcb(Native Method)
    
    at com.ibm.jzos.Bsam.readJFCB(Bsam.java:67)
    
    at com.ibm.jzos.ZFile.readJFCB(ZFile.java:1331)
    
    ...
    .
    

Local fix

Problem summary

  • The problem is caused when ZFile.readJFCB is called extensively
    by an application. ZFile.readJFCB fails to release the memory
    allocated on each call.
    

Problem conclusion

  • ZFile.readJFCB has been updated to release allocated memory at
    the end of each call to prevent storage failure from occurring.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR5 FP16  (8.0.5.16)
       7 R1 SR4 FP25  (7.1.4.25)
       7    SR10 FP25 (7.0.10.25)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI95513

  • Reported component name

    JAVA Z/OS 64

  • Reported component ID

    620700104

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-03-21

  • Closed date

    2018-03-21

  • Last modified date

    2018-05-02

  • 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

    JAVA Z/OS 64

  • Fixed component ID

    620700104

Applicable component levels

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"800","Edition":"","Line of Business":{"code":"LOB16","label":"Mainframe HW"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"800","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
09 August 2022