IT18496: TRAP IN BLD_UPD_COMPENSATION WHEN PREDICATE HAS SCALAR SUBQUERY

DB2 Version 11.1 Mod 2 Fix Pack 2 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix002 for Linux, UNIX, and Windows
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 Mod4 Fix Pack4 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 4 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

• DB2 may trap in sqlnr_bld_update-compensation if the following
  conditions are met:
  o This is an update query
  o There is a scalar subquery in select
  o There is a subquery in predicate and the subquery has scalar
  subquery
  o There is an IS NULL predicate
  
  The follow stack will be found in the trap file:
  
  sqlo_trce
  sqloEDUCodeTrapHandler
  __restore_rt
  sqlnr_bld_upd_compensation
  sqlnr_qrwprep_phase2
  sqlnr_prep2_action
  sqlnr_comp
  sqlnr_seq
  sqlnr_rcc
  sqlnr_exe
  sqlnn_cmpl
  sqlnn_cmpl
  sqlra_compile_var
  sqlra_find_var
  

Local fix

• db2set -im DB2COMPOPT=NO_UPDATE_COMP
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 11.1 Mod 2 Fix Pack 2 or higher               *
  ****************************************************************
  

Problem conclusion

• First fixed in DB2 11.1 Mod 2 Fix Pack 2
  

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:

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

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