DB2 - Problembeschreibung
Problem IT05070 | Status: Geschlossen |
SLOW DATABASE ROLLFORWARD OR HADR STANDBY REPLAY DUE TO FREQUENT CALLS TO AND MESSAGES FROM SQLPRPROCESSMAXLOGFILESOPENINRECOVER | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 | |
Problembeschreibung: | |
There can be instances during database rollforward or HADR standby replay where an open transaction or slow internal bufferpool flushing may adversely affect the performance of recovery. One will notice that they are in such a situation when the DB2 diagnostics log shows frequent entries such as the following: 2014-09-26-11.03.02.395365-240 I1815E1419 LEVEL: Info PID : 28919 TID : 140735458305792 PROC : db2sysc 0 INSTANCE: db2inst NODE : 000 DB : SAMPLE APPHDL : 0-13 APPID: *LOCAL.DB2.140920141323 HOSTNAME: host1 EDUID : 94 EDUNAME: db2redom (SAMPLE) 0 FUNCTION: DB2 UDB, recovery manager, sqlprProcessMaxLogFilesOpenInRecoveryThreshold, probe:6876 DATA #1 : <preformatted> Some log stream(s) have reached the maximum number of log files that can be opened during recovery threshold. Recovery status for log stream 0 lowtranlsn: 00000A3AA349D30C minbufflsn: 00000A3AC6F1CC3B headlsn: 00000A3AA349D30C recoveryStartingLFSLSN: 0/0000000000000000 initialRecoveryStartingLFSLSN: 0/0000000000000000 groupHeadLsn: 00000A3AA349D30C groupMinBuffLSN: 00000A3AC6F1CC3B HeadExtentID: 140350 GroupHeadExtentID: 140350 rfwdLogChainId: 22 rfwdHeadChainId: 22 numLogFilesInRecovery: 256 nextLso: 21120392226938 nextLsn: 00000A3AC6F1CC3C minPseudoLsn: FFFFFFFFFFFFFFFF LastFullRecLfsLsnLso: 2975515101/00000A3AC6F1CC3B/21120392226937 LastRecLfsLsnLsoLFH: 2975515101/00000A3AC6F1CC3A/21120392226840 that seems to fill up the DB2 diagnostics log at a high rate. Additionally, in HADR standby replay scenarios one may notice the standby falling behind the primary in terms to replay position. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Problem Description above. * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 Version 10.1 Fix Pack 5. * **************************************************************** | |
Local-Fix: | |
If this problem is noticed deactivating the standby and then re-activating should correct the problem. If the problem leads to the standby being shutdown unexpectedly, re-activating will also work in this case. | |
Lösung | |
First fixed in DB2 Version 10.1 Fix Pack 5. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 21.10.2014 26.10.2015 26.10.2015 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
Problem behoben lt. FixList in der Version | |
10.1.0.5 |