PH45375: OVERCONSUMPTION OF 31 BIT MEMORY IN NATIVE MODE WITH LDS PARALLELISM

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A Db2 HPU step uses an unexpectedly big amount of 31 bit memory.
  
  This can occur when all the following conditions are fulfilled:
  - an unload in native mode against a partitioned table space
  with more than one partition is involved
  - LDS parallelism is enabled
  The over-consumption of 31 bit memory can lead to memory outage.
  

Local fix

• decrease the LDS parallelism degree.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Db2 High Performance Unload         *
  *                 for z/OS                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: A Db2 HPU step uses an unexpectedly big *
  *                      amount of 31 bit memory.                *
  *                                                              *
  *                      This can occur when all the following   *
  *                      conditions are fulfilled:               *
  *                      - an unload in native mode against more *
  *                      than one LDS from a partitioned table   *
  *                      space (either the LDSes from the table  *
  *                      space itself or from FlashCopy datasets *
  *                       of the tables space)                   *
  *                      - LDS parallelism is enabled            *
  *                      The over-consumption of 31 bit memory   *
  *                      can lead to memory outage.              *
  ****************************************************************
  * RECOMMENDATION: Apply the PTF                                *
  ****************************************************************
  Over-consumption of 31 bit memory in native mode with LDS
  parallelism.
  

Problem conclusion

• Code has been changed to fix this problem
  

Temporary fix

Comments

APAR Information

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

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

Modules/Macros

• INZUTILK
  

Fix information

• Fixed component name

  DB2 HI PERF UNL

• Fixed component ID

  5697F4400

Applicable component levels

• R510 PSY UI80220

     UP22/04/28 P F204

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.