DB2 - Problembeschreibung
Problem IC80024 | Status: Geschlossen |
DB2 may encounter 'deadlock' on system catalog SYSIBM.SYSCOLAUTH when performing two DROP TABLE statements simultaneously. | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 | |
Problembeschreibung: | |
Deadlocks on system catalog may occur when concurrently perform two DROP TABLE statements on two different tables. To identify the problem, you need to use DB2 event monitor to collect detailed information for deadlocks. When the deadlock error occurs, in the event monitor output you will see the following entries: ============================================= Table of lock waited on : SYSPLANDEP Schema of lock waited on : SYSIBM Type of lock: Row Mode of lock: X - Exclusive Mode application requested on lock: S - Share Text : drop table NEWTON.T1 Table of lock waited on : SYSCOLAUTH Schema of lock waited on : SYSIBM Type of lock: Row Mode of lock: U - Update Mode application requested on lock: U - Update Text : drop table NEWTON.T2 ============================================= | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * All users of version 9.5 on Linux, Unix and Windows * * platforms. * **************************************************************** * PROBLEM DESCRIPTION: * * Deadlocks on system catalog may occur when concurrently * * perform two DROP TABLE statements on two different tables. * * * * To identify the problem, you need to use DB2 event monitor * * to collect detailed information for deadlocks. * * When the deadlock error occurs, in the event monitor output * * you will see the following entries: * * ============================================= * * Table of lock waited on : SYSPLANDEP * * Schema of lock waited on : SYSIBM * * Type of lock: Row * * Mode of lock: X - Exclusive * * Mode application requested on lock: S - Share * * Text : drop table NEWTON.T1 * * * * Table of lock waited on : SYSCOLAUTH * * Schema of lock waited on : SYSIBM * * Type of lock: Row * * Mode of lock: U - Update * * Mode application requested on lock: U - Update * * Text : drop table NEWTON.T2 * * ============================================= * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 LUW Version 9.5 FixPak 9 or higher levels. * **************************************************************** | |
Local-Fix: | |
Perform the two DROP TABLE statements sequentially. | |
verfügbare FixPacks: | |
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows | |
Lösung | |
First fixed in DB2 LUW Version 9.5 FixPak 9. | |
Workaround | |
Perform the two DROP TABLE statements sequentially. | |
Bug-Verfolgung | |
Vorgänger : APAR is sysrouted TO one or more of the following: IC80424 IC84198 Nachfolger : | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 28.11.2011 12.03.2012 12.03.2012 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.0., 9.5. | |
Problem behoben lt. FixList in der Version | |
9.5.0.9 |