PI81647: DSNX812I MIGHT BE ISSUED WHEN IDAA COMMAND IS ISSUED WITH SCOPE(GROUP) AND HIT A FALSE LOCK CONTENTION WHEN THE RESOURCE IS BUSY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DSNX812I message might be returned when IDAA command is issued
  with SCOPE(GROUP) and hit a false lock contention when the
  resource is busy
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of DB2 11 for z/OS who use         *
  *                 IBM DB2 Analytics Accelerator                *
  ****************************************************************
  * PROBLEM DESCRIPTION: DSNX812I MIGHT BE ISSUED WHEN DB2       *
  *                      ACCELERATOR COMMAND SUCH AS             *
  *                      STOP/START/DISPLAY ACCEL                *
  *                      IS ISSUED WITH SCOPE(GROUP) AND HIT     *
  *                      A FALSE LOCK CONTENTION WHEN THE        *
  *                      RESOURCE IS BUSY.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  DSNX812I MIGHT BE ISSUED WHEN DB2 ACCELERATOR COMMAND SUCH AS
  STOP/START/DISPLAY ACCEL IS ISSUED WITH SCOPE(GROUP) AND HIT A
  FALSE LOCK CONTENTION WHEN THE RESOURCE IS BUSY. FOR EXAMPLE
  THE SAME LOCK HASH ENTRY COULD BE HELD BY LOCK REQUESTS OTHER
  THAN ACCELERATOR COMMAND.
  

Problem conclusion

• DB2 IS FIXED TO USE ASYNC LOCK REQUEST FOR ACCELERATOR COMMAND
  LOCK TO AVOID FALSE LOCK CONTENTION WHEN SAME HASH ENTRY IS
  HELD BY LOCK REQUEST OTHER THAN ACCELERATOR COMMAND LOCK
  REQUEST.
  ADDITIONAL KEYWORDS: IDAAV4R1/K IDAAV5R1/K IDAAV6R1/K
  MSGDSNX812I
  

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:

  UI48893

Modules/Macros

• DSNX8CMD
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RB10 PSY UI48893

     UP17/08/02 P F708

Fix is available

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