DB2 - Problembeschreibung
Problem IT06986 | Status: Geschlossen |
NON-SEVERE ERROR DURING ROLLOUT PROCESSING FOR A DELETE FROM MDC TABLE WITH EXTENDED ROW SIZE MIGHT RESULT IN DATABASE SHUTDOWN | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
Problembeschreibung: | |
The error might occur when the following criteria are met: 1) The table is a multidimensional clustering (MDC) table. 2) The table uses extended row size. New in DB2 version 10.5, extended row size support allows you to create a table where its row length can exceed the maximum record length for the page size of the table space. 3) A rollout delete is performed on the table. The conditions that need to be met for a delete to be classified as a rollout delete are: - The DELETE statement is a searched DELETE, not a positioned DELETE (the statement does not use the WHERE CURRENT OF clause). - There is no WHERE clause (all rows are to be deleted), or the only conditions in the WHERE clause apply to dimensions. - The table is not defined with the DATA CAPTURE CHANGES clause. - The table is not the parent in a referential integrity relationship. - The table does not have ON DELETE triggers defined. - The table is not used in any MQTs that are refreshed immediately. - A cascaded delete operation might qualify for rollout if its foreign key is a subset of the table's dimension columns. - The DELETE statement cannot appear in a SELECT statement executing against the temporary table that identifies the set of affected rows prior to a triggering SQL operation (specified by the OLD TABLE AS clause on the CREATE TRIGGER statement). 4) The rollout delete hits a non-severe error while executing the DB2 internal function named sqldRolloutRecordPass1. Examples of non-severe errors include interrupts and out-of-memory errors. If these conditions are met, then the problem might be hit. The symptom is that the db2diag.log will contain a SQLD_BADPAGE error from the sqldRolloutRecordPass1 function (despite the fact that no bad-page was encountered) and the database will be forced to shutdown. Here is an example of such a db2diag.log entry. 2015-02-05-09.30.56.054858-300 I54296E574 LEVEL: Severe PID : 10555 TID : 46913076324672 PROC : db2sysc INSTANCE: db2usr1 NODE : 000 DB : MYDB APPHDL : 0-36 APPID: *LOCAL.db2usr1.150205143111 AUTHID : DB2USR1 HOSTNAME: myHost EDUID : 18 EDUNAME: db2agent (MYDB) FUNCTION: DB2 UDB, data management, sqldRolloutRecordPass1, probe:1207 RETCODE : ZRC=0x87040001=-2029780991=SQLD_BADPAGE "Bad Data Page" DIA8500C A data file error has occurred, record id is "". | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * All users * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 version 10.5.0.7. * **************************************************************** | |
Local-Fix: | |
If the error is encountered, execute the RESTART DATABASE command to execute crash recovery and resume database processing. No permanent damage should have occurred. To avoid hitting the problem do not create multidimensional clustering (MDC) tables that use the extended row size feature or, if such a table was already created, disable the rollout delete optimization by executing the following command and then recycling the instance: db2set DB2_MDC_ROLLOUT=OFF | |
Lösung | |
The problem is first fixed in DB2 version 10.5.0.7. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 05.02.2015 20.01.2016 20.01.2016 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
Problem behoben lt. FixList in der Version | |
10.5.0.7 |