IT25992: HADR GRACEFUL TAKEOVER ON PURESCALE COULD TIME OUT WAITING FOR PRIMARY DATABASE TO PROGRESS DUE TO GLFH LOTCH CONTENTION.

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

• Sometimes a pd dump function would need to acquire glfh lock to
  check if the database has been poisoned.
  
  However, this action could be blocked as another member could be
  holding the glfh lock, preventing the dump function to do a
  simple check.
  
  The stack should show something like this:
  
  #4  0x00007ffff026a0e6 in sqlpUpgradeLock(sqeBsuEdu*,
  SQLP_LOCK_INFO*) () from
  /home/db2inst1/sqllib/lib64/libdb2e.so.1
  
  #5  0x00007ffff025ce0c in sqlpValLotch::getSDComplex(unsigned
  long, unsigned long, int const*, char const*, unsigned long) ()
  from /home/db2inst1/sqllib/lib64/libdb2e.so.1
  
  #6  0x00007ffff035bbf2 in sqlrr_dump_ffdc(sqlrr_cb*, int, int)
  () from /home/db2inst1/sqllib/lib64/libdb2e.so.1
  
  #7  0x00007ffff09e60fc in sqlzeDumpFFDC () from
  /home/db2inst1/sqllib/lib64/libdb2e.so.1
  

Local fix

Problem summary

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

Problem conclusion

• First fixed in Db2 11.1 Mod 4 Fixpack 4
  

Temporary fix

Comments

APAR Information

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

  IT25965

• 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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