PM75608: ABENDS0C4 PIC38 IN DSNB1ABP OFFSET0510

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When Alter Bufferpool was called by WLM asynchronously, an
  internal control block was freed by a WLM termination request
  before Alter Bufferpool completes its operation. This caused the
  Alter Bufferpool command to run into an 0C4 abend.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DB2 users using buffer pool attribute    *
  *                 AUTOSIZE=YES.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 RC00000038 in DSNB1ABP         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When Work Load Manager (WLM) adjustment exit is invoked, it
  makes an alter buffer pool request with a parameter list
  asynchronously. In rare cases, WLM adjustment exit is invoked
  to terminate and free the parameter list before the previous
  alter buffer pool request is complete. The alter request abends
  while the parameter list is unexpectedly deallocated.
  

Problem conclusion

• DB2 has been fixed for WLM to allocate a parameter list for
  altering VPSIZE and the storage for the parameter list is
  deallocated when the alter request is complete.
  

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:

  UK90366 UK90367

Modules/Macros

•    DSNB1ABP DSNB1WRA
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UK90366

     UP13/01/01 P F212

• R910 PSY UK90367

     UP13/01/01 P F212

Fix is available

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