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PH17896: ZEXPLORER V3.1.1 - RSE THREADPOOL SERVER *TIMEOUT* WITH DISPLAY CLIENT OPERATOR COMMAND

A fix is available

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APAR status

  • Closed as program error.

Error description

  • In IBM Explorer for z/OS V3.1.1.17, when issuing DISPLAY CLIENT
    operator command, the RSE Threadpool server may be unresponsive
    with a *timeout* indicator.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: 01.All zExpl and IDz users                   *
    ****************************************************************
    * PROBLEM DESCRIPTION: 01.A change in DGRAM socket writing     *
    *                         and reading required to fix the      *
    *                         issue in logon message length        *
    *                         limitation has caused a side         *
    *                         effect, resulting the delay in the   *
    *                         reading end in the processing of     *
    *                         the message client listing           *
    *                         responses from the threadpool to     *
    *                         daemon.                              *
    ****************************************************************
    01.When the condition happens, the message receiving timing is
       unexpectedly. As a result, it may lead to an out-of-sync
       delay for other message flows using the same inter-process
       communication channel such as lock owner information queries
       required in opening a dataset member.
    

Problem conclusion

  • 01.The additional msg length peeking while reading from a DGRAM
       socket might cause a failure in read-ready status of the
       socket in the next subsequent read. When the condition
       happens, the message receiving timing is unexpectedly. The
       change of msg length peeking is removed; the logon message
       upper bound has been increased as a replacement fix. Note
       that further investigation and change for socket
       communication would be needed for a much larger
       communication load as needed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH17896

  • Reported component name

    EXP FOR Z/OS HO

  • Reported component ID

    5655EXP23

  • Reported release

    310

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-10-09

  • Closed date

    2019-11-27

  • Last modified date

    2020-01-03

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

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

Modules/Macros

  • FEJENF70 FEJJCNFG FEJJJCL  FEJJMON  FEJTSO   FEK1SMPE FEK2RCVE
    FEK3ALOC FEK4ZFS  FEK5MKD  FEK6DDEF FEK7APLY FEK8ACPT FEK@CERR
    FEK@CONE FEK@CONF FEK@CUST FEK@DEB  FEK@DESC FEK@FLOW FEK@GEN
    FEK@GENW FEK@ISPF FEK@IVP  FEK@IVPD FEK@IVPW FEK@JCN1 FEK@JCNE
    FEK@JESJ FEK@MAIN FEK@MIGO FEK@OPTE FEK@OPTG FEK@OPTN FEK@PRIM
    FEK@RSE1 FEK@RSEO FEK@STRT FEK@TAB1 FEK@TAB2 FEK@TAB3 FEK@WRK1
    FEK@WRK2 FEK@WRK3 FEK@WRK4 FEK@WRK5 FEKAPPCC FEKAPPCL FEKAPPCX
    FEKATTR  FEKDSI   FEKEESX0 FEKFASIZ FEKFATT1 FEKFBLD  FEKFCIPH
    FEKFCLIE FEKFCMOD FEKFCMPR FEKFCMSG FEKFCOMM FEKFCOPY FEKFCOR6
    FEKFCORE FEKFDBBF FEKFDBBP FEKFDBG  FEKFDBG6 FEKFDBGM FEKFDIR
    FEKFDIR6 FEKFDIVP FEKFDST0 FEKFDST1 FEKFDST2 FEKFENVF FEKFENVI
    FEKFENVP FEKFENVR FEKFENVS FEKFEPL  FEKFICUL FEKFISPF FEKFIVP0
    FEKFIVPA FEKFIVPD FEKFIVPI FEKFIVPJ FEKFIVPT FEKFJESM FEKFJESU
    FEKFJVM  FEKFLATR FEKFLDSI FEKFLDSL FEKFLEOP FEKFLOGS FEKFLPTH
    FEKFMAI6 FEKFMAIN FEKFMINE FEKFMINS FEKFMNTL FEKFNTCE FEKFOMVS
    FEKFPATT FEKFPRDS FEKFPTC  FEKFRIVP FEKFRMSG FEKFRSES FEKFRSRV
    FEKFSCMD FEKFSEND FEKFSSL  FEKFSTUP FEKFT000 FEKFT001 FEKFT002
    FEKFT003 FEKFT004 FEKFT005 FEKFT006 FEKFT007 FEKFT008 FEKFT009
    FEKFT010 FEKFT011 FEKFT012 FEKFT013 FEKFT014 FEKFT015 FEKFT016
    FEKFT017 FEKFT018 FEKFT019 FEKFT020 FEKFTIVP FEKFTRKS FEKFTSO
    FEKFUTIL FEKFVERS FEKFXITA FEKFXITL FEKFZME  FEKFZMF  FEKFZOS
    FEKHCONF FEKHCUST FEKHDEB  FEKHDESC FEKHFLOW FEKHGEN  FEKHISPF
    FEKHIVP  FEKHIVPD FEKHJESJ FEKHMAIN FEKHMIGO FEKHOPTE FEKHOPTN
    FEKHPRIM FEKHRSE1 FEKHRSEO FEKHSTRT FEKHTAB1 FEKHTAB2 FEKINIT
    FEKKEYS  FEKLOGR  FEKLOGS  FEKM00   FEKM01   FEKM02   FEKMKDIR
    FEKMOUNT FEKMSGC  FEKMSGS  FEKRACF  FEKRSED  FEKSAPF  FEKSAPPL
    FEKSBPX  FEKSCLAS FEKSCLOG FEKSCMD  FEKSCPYM FEKSCPYU FEKSDSN
    FEKSENV  FEKSETUP FEKSISPF FEKSJCFG FEKSJCMD FEKSJMON FEKSLPA
    FEKSPROG FEKSPTKT FEKSRSED FEKSSERV FEKSSTC  FEKSSU   FEKSUSER
    FEKXCFGE FEKXCFGI FEKXCFGM FEKXCFGT FEKXMAIN FEKXML
    

Fix information

  • Fixed component name

    EXP FOR Z/OS HO

  • Fixed component ID

    5655EXP23

Applicable component levels

  • R310 PSY UI66683

       UP19/12/07 P F912

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

Modified date:
03 January 2020