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OA49102: HEALTH CHECK CSVTAM_T1BUF_T2BUF_NOEE GIVES AN EXCEPTION IN Z/OS 2.2 FOR THE T1BUF VTAM BUFFER.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • The default for the T1BUF pool changed and the health check
    needs to be
    updated.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of the IBM Communications Server for z/OS Version  *
    * 2 Release 2 SNA: Health Checker                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * CSVTAM_T1BUF_T2BUF_NOEE flags an error when the user takes   *
    * the default for the T1BUF pool.                              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply PTF.                                                   *
    ****************************************************************
    CSVTAM_T1BUF_T2BUF_NOEE flags an error when the user takes the
    default for the T1BUF pool.
    

Problem conclusion

  • HCHECKER/K
    
    Health Checker has been updated to recognize the new default for
    the T1BUF buffer pool.
    
    
    The following documentation updates are made for two Health
    Checker messages in SNA Messages:
    .
    .
    ISTH013E
    T1BUF/T2BUF buffer pool allocation might not be optimal for use
    with Enterprise Extender
    
    Explanation
    
    Check CSVTAM_T1BUF_T2BUF_EE determined that Enterprise Extender
    (EE) is being used (or is intended to be used) on this system
    and the T1BUF or T2BUF (or both) buffer pool allocation is at
    its default value.
    
    The default value might not be optimal for your system when
    using EE. Such a value assigned to this pool might cause
    performance degradation as a result of excessive buffer pool
    expansions and contractions. The default value for the
    T1BUF buffer pool is 18. The default value for the T2BUF buffer
    pool is 8.
    
    Message ISTH012I is issued prior to this message for each buffer
    pool (T1BUF, T2BUF, or both) that has failed this check.
    .
    .
    .
    ISTH016E
    T1BUF/T2BUF buffer pool allocation might not be optimal if
    Enterprise Extender is not being used
    
    Explanation
    
    Check CSVTAM_T1BUF_T2BUF_NOEE determined that Enterprise
    Extender (EE) might not be in use on this system and the T1BUF
    or T2BUF (or both) buffer pool allocation is set above its
    default value.
    
    A value above the default value might not be optimal for your
    system when not using EE. The T1BUF and T2BUF buffer pools are
    designed to optimize HPR flows over Enterprise Extender
    connections. When EE is not being used, the buffer allocation
    for these pools does not need to be set above the default
    values. The default value for the T1BUF buffer pool is 18. The
    default value for the T2BUF buffer pool is 8.
    
    Message ISTH015I is issued prior to this message for each buffer
    pool (T1BUF, T2BUF, or both) that failed this check.
    .
    .
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA49102

  • Reported component name

    VTAM V4 MVS/ESA

  • Reported component ID

    569511701

  • Reported release

    220

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-10-14

  • Closed date

    2015-10-27

  • Last modified date

    2015-12-02

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

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

    UA79491

Modules/Macros

  • ISTHCCK1 ISTHCMSG
    

Fix information

  • Fixed component name

    VTAM V4 MVS/ESA

  • Fixed component ID

    569511701

Applicable component levels

  • R220 PSY UA79491

       UP15/12/01 P F511

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:
02 December 2015