IBM Support

IT30736: STORAGE PROVISIONING MIGHT SKIP STORAGE POOL ENTRIES DEPENDING ON SIZES AND VALUE STORED IN SP_THRESHOLD

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APAR status

  • Closed as program error.

Error description

  • If the value of SP_THRESHOLD is set to a size so the system is
    considering sizes in kilobytes then it is possible for a dbspace
    / chunk to fall below this threshold but a significant amount
    but the chunks stored in the storage pool might be rejected
    because of their size.
    
    Imagine that there are NNN chunks added to the storage pool
    which are all 3000 kb in size and SP_THRESHOLD is 10000 kb and
    there is chunk which is initially 16000 kb in size.
    
    If a very large table is created in that chunk so that the free
    space is very low or approaching zero, then the system ignores
    all of the entries in the storage pool (i.e not even one of size
    3000 will be added).
    
    The argument is that the processing should have added NNN
    storage pool chunks to the dbspace when it fell significantly
    below the value of SP_THRESHOLD.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of Informix Server prior to 12.10.xC14 and 14.10.xC4.  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to Informix Server 12.10.xC14 or 14.10.xC4 (when      *
    * available).                                                  *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 12.10.xC14 and 14.10.xC4.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT30736

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-10-29

  • Closed date

    2020-03-04

  • Last modified date

    2020-03-04

  • 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

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
04 March 2020