IT21553: THE PRIMARY HADR DATABASE FAILS OVER TO THE STANDBY AFTER CONFIGURING FOR HA VIA DB2HAICU.

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

APAR status

• Closed as program error.

Error description

• When configuring an HADR database pair for HA via the db2haicu
  utility, it is possible that the Primary HADR database role
  fails over to the standby host shortly after db2haicu execution.
  
  If this problem occurs and the following two db2diag.log
  messages are seen on the original standby host, then it is a
  match for this APAR:
  
  2017-06-25-02.18.03.915829+720 E80421950E389         LEVEL: Info
  PID     : 2695                 TID : 48009457543904  PROC :
  db2gcf
  INSTANCE: db2inst1               NODE : 000
  HOSTNAME: hostB
  FUNCTION: DB2 UDB, high avail services, sqlhaRemoveFlagRG,
  probe:673
  MESSAGE : Resource flag file has been deleted
  DATA #1 : String, 49 bytes
  db2_HADRDB_hostA_Reintegrate_db2inst1_db2inst1
  
  2017-06-25-02.18.03.977507+720 E80422340E393         LEVEL: Info
  PID     : 2695                 TID : 48009457543904  PROC :
  db2gcf
  INSTANCE: db2inst1               NODE : 000
  HOSTNAME: hostB
  FUNCTION: DB2 UDB, high avail services, sqlhaCreateFlagRG,
  probe:508
  MESSAGE : IBM.Test flag resource has been created
  DATA #1 : String, 49 bytes
  db2_HADRDB_hostA_Reintegrate_db2inst1_db2inst1
  
  The root cause for this issue is the
  'db2_HADRDB_hostA_Reintegrate_db2inst1_db2inst1' file being left
  over in /tmp on the standby host.
  

Local fix

• Before you run db2haicu to configure HA, first ensure that there
  are no leftover flag files in /tmp on either host, i.e. run the
  "ls /tmp | grep db2_<DBNAME>" command on both hosts and ensure
  there are no files with this prefix. If there are, they must be
  deleted.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1 Mod 3 Fix Pack 3 or higher               *
  ****************************************************************
  

Problem conclusion

• First fixed in Db2 11.1 Mod 3 Fix Pack 3
  

Temporary fix

Comments

APAR Information

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

  IT21424

• 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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