IT30119: SELECT MIGHT UNNECESSARILY ACQUIRE IN LOCK

Db2 Version 11.1 Mod 4 Fix Pack 5 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 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• When running a select on a table Db2 might unnecessarily acquire
  an Intentional None Lock on that table:
  
  ID of agent holding lock = 1
  Application ID holding lock = 127.0.0.1.40424.190406213448
  Lock name = 0x50008D08000000000000000054
  Lock attributes = 0x00000000
  Release flags = 0x00000000
  Lock object type = Table
  Lock mode = Intent None Lock (IN)
  ...
  Name of tablespace holding lock = TBSP1
  Schema of table holding lock = SCHEMA1
  Name of table holding lock = TABLE1
  Data Partition Id of table holding lock = 0
  Lock wait start timestamp = 01/01/1970 00:00:01.180398
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
  ****************************************************************
  

Problem conclusion

• First fixed in Db2 11.1 Mod 4 Fixpack 5
  

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:

  IT30120

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

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