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DB2 - Problembeschreibung

Problem IC86144 Status: Geschlossen

IN MULTIPLE DATABASE PARTITIONS ENVIRONMENT, SINGLE SYSTEM VIEW (SSV)
BACKUP MAY RUN INTO VIOLATING NUM_LOG_SPAN PROBLEM WITH AD

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
As a rule, DB2 backup commands are excluded from the limitation 
imposed by the num_log_span configuration parameter. 
 
However, while doing the Single System View (SSV) backup in 
multiple database partitions environment, violating num_log_span 
problem might be raised up with ADM1541W message as belowing 
db2diag.log entries: 
 
2012-04-09-17.10.55.303124-240 E315779748E486      LEVEL: Info 
PID     : 7049                 TID  : 46916997998912PROC : 
db2sysc 1 
INSTANCE: Christine             NODE : 001          DB   : Allan 
APPHDL  : 1-30160              APPID: *N1.nypxt330.120411094113 
AUTHID  : MSDB2 
EDUID   : 37375                EDUNAME: db2agent (Allan) 1 
FUNCTION: DB2 UDB, database utilities, sqlubMPPRequestor, 
probe:543 
DATA #1 : <preformatted> 
Starting a multi-partition backup on 5 partitions. 
 
...skip... 
 
2012-04-09-23.40.39.472662-240 E355895137E710      LEVEL: Error 
PID     : 8048                 TID  : 46912925329728PROC : 
db2sysc 3 
INSTANCE: Christine             NODE : 003          DB   : Allan 
EDUID   : 86                   EDUNAME: db2loggr (R1SCENA) 3 
FUNCTION: DB2 UDB, data protection services, 
sqlpScanTranTableForLowTran, probe:550 
MESSAGE : ADM1541W  Application "db2bp" with application handle 
"1-30160" and 
          application id "*N1.Christine.120411094113" executing 
under 
          authentication id "AlanDB2   " has been forced off of 
the database for 
          violating database configuration parameter 
NUM_LOG_SPAN (current 
          value "17"). The unit of work will be rolled back. 
 
During SSV backups, log span immunity is set only for the 
MPPRequestor agent (ie. the coordinator of all the backup 
agents). However, the same immunity is not granted to the actual 
backup agents spawned by the coordinator. In a non-SSV backup 
there is no MPPRequestor and the backup agent itself is granted 
log span immunity, thus the situation arises only in the SSV 
case.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL USERS                                                    * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* As a rule, DB2 backup commands are excluded from the         * 
* limitation                                                   * 
* imposed by the num_log_span configuration parameter.         * 
*                                                              * 
* However, while doing the Single System View (SSV) backup in  * 
* multiple database partitions environment, violating          * 
* num_log_span                                                 * 
* problem might be raised up with ADM1541W message as belowing * 
* db2diag.log entries:                                         * 
*                                                              * 
* 2012-04-09-17.10.55.303124-240 E315779748E486      LEVEL:    * 
* Info                                                         * 
* PID     : 7049                 TID  : 46916997998912PROC :   * 
* db2sysc 1                                                    * 
* INSTANCE: Christine             NODE : 001          DB   :   * 
* Allan                                                        * 
* APPHDL  : 1-30160              APPID:                        * 
* *N1.nypxt330.120411094113                                    * 
* AUTHID  : MSDB2                                              * 
* EDUID   : 37375                EDUNAME: db2agent (Allan) 1   * 
* FUNCTION: DB2 UDB, database utilities, sqlubMPPRequestor,    * 
* probe:543                                                    * 
* DATA #1 : <preformatted>                                     * 
* Starting a multi-partition backup on 5 partitions.           * 
*                                                              * 
* ...skip...                                                   * 
*                                                              * 
* 2012-04-09-23.40.39.472662-240 E355895137E710      LEVEL:    * 
* Error                                                        * 
* PID     : 8048                 TID  : 46912925329728PROC :   * 
* db2sysc 3                                                    * 
* INSTANCE: Christine             NODE : 003          DB   :   * 
* Allan                                                        * 
* EDUID   : 86                   EDUNAME: db2loggr (R1SCENA) 3 * 
* FUNCTION: DB2 UDB, data protection services,                 * 
* sqlpScanTranTableForLowTran, probe:550                       * 
* MESSAGE : ADM1541W  Application "db2bp" with application     * 
* handle                                                       * 
* "1-30160" and                                                * 
*           application id "*N1.Christine.120411094113"        * 
* executing                                                    * 
* under                                                        * 
*           authentication id "AlanDB2   " has been forced off * 
* of                                                           * 
* the database for                                             * 
*           violating database configuration parameter         * 
* NUM_LOG_SPAN (current                                        * 
*           value "17"). The unit of work will be rolled back. * 
*                                                              * 
* During SSV backups, log span immunity is set only for the    * 
* MPPRequestor agent (ie. the coordinator of all the backup    * 
* agents). However, the same immunity is not granted to the    * 
* actual                                                       * 
* backup agents spawned by the coordinator. In a non-SSV       * 
* backup                                                       * 
* there is no MPPRequestor and the backup agent itself is      * 
* granted                                                      * 
* log span immunity, thus the situation arises only in the SSV * 
* case.                                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to v9.7 FP8                                          * 
* OR                                                           * 
* As a workaround, do not use SSV backup if the value of       * 
* NUM_LOG_SPAN is not 0.                                       * 
****************************************************************
Local-Fix:
Do not use SSV backup if the value of NUM_LOG_SPAN is not 0.
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
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
This problem is fixed in v9.7 FP8
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
26.08.2012
01.04.2013
01.04.2013
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP8
Problem behoben lt. FixList in der Version
9.7.0.8 FixList