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DB2 - Problembeschreibung

Problem IC90020 Status: Geschlossen

"TAKEOVER" HADR COMMAND SOMETIMES CAUSES "LOG CHAIN
MISMATCH" ERROR, LEADING TO FAILURE OF STANDBY IN HADR SETUP.

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
It has been observed that when a particular sequence of steps 
are executed, HADR standby fails to come up. 
The reproduction steps are : 
 
a) Issue "db2 takeover hadr on db <dbname>" from standby 
b) Issue "db2_kill" from new primary 
c) After 1 minute , issue "db2 takeover hadr on db <dbname> by 
force peer window only" from standby 
d) After 1 minute, issue "db2start" followed by "db2 start hadr 
on db <dbname> as standby" 
 
The db2diag.log shows the following error messages : 
 
2013-01-11-15.59.05.509769+240 I38363E380          LEVEL: 
Warning 
PID     : 5226                 TID  : 47972704315712PROC : 
db2sysc 
INSTANCE: inst1            NODE : 000          DB   : ABC 
EDUID   : 47                   EDUNAME: db2hadrp (ABC) 
FUNCTION: DB2 UDB, recovery manager, sqlpLogChainMatch, probe:20 
MESSAGE : Log chain mismatch detected: 11 0,1476536718 
 
2013-01-11-15.59.05.509837+240 E38744E686          LEVEL: Error 
PID     : 5226                 TID  : 47972704315712PROC : 
db2sysc 
INSTANCE: inst1             NODE : 000          DB   : ABC 
EDUID   : 47                   EDUNAME: db2hadrp (ABC) 
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrEduP, 
probe:20500 
MESSAGE : ADM12500E  The HADR standby database cannot be made 
consistent with the primary database. 
The log stream of the standby database is incompatible with that 
of the primary database. 
To use this database as a standby, it must be recreated from a 
backup image or split  mirror of the primary database. 
 
The likely root cause is a special boundary condition where the 
forced takeover was executed on a standby that was from a 
consistent point without replaying any log records.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Customers using HADR feature of DB2                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 V97fp9 fixpack.                               * 
****************************************************************
Local-Fix:
As a temporary workaround: 
1. Take a full backup on Primary 
2. Restore it on Standby 
3. Re-initiliaze Hadr by starting db as standby
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
The fix will be included in DB2 v97fp9
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
04.02.2013
06.01.2014
10.11.2015
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP8,
9.7.FP9
Problem behoben lt. FixList in der Version
9.7.0.9 FixList
9.7.0.9 FixList