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 | |
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 | |
9.7.0.9 |