IT21920: ALTER TABLESPACE REDUCE OPERATIONS MIGHT LEAD TO ASYNCHRONOUS HIGH WATERMARKS IN HADR SYSTEMS

Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 7 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• Corrupted HWM tablespace setting may incorrectly allow a
  tablespace resize operation to complete
  Description: If for unknown reasons the HWM setting of a
  tablespace has been set too low, then a resize operation on a
  tablespace
  might be allowed to proceed and reduce the size too much thereby
  removing valid pages from the tablespace.
  This apar fix introduces an additional sanity check to prevent
  this from happening.
  Normally a database restart will allow for the High Water Mark
  to be restored to the correct setting as long as no resize
  operations have taken place.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users.                                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1 Mod 3 Fixpack 3.                         *
  ****************************************************************
  

Problem conclusion

• See Problem Description above.
  

Temporary fix

Comments

APAR Information

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

  IT20827

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

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP