|
Problem IC75031
|
Status: Closed |
DEADLOCK MAY OCCUR WHEN RUNNING TWO ALTER TABLE ATTACH PARTITION COMMANDS CONCURRENTLY |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
When the ATTACH PARTITION command is executed in a high
concurrency level, deadlock may occur if the table being
attached as the new partition has index defined on it. The
deadlock is between the two catalog tables, SYSDEPENDENCIES and
SYSINDEXAUTH.
You will see the below records from the deadlock event monitor
output:
Application 1:
Lock requested: U lock on SYSDEPENDENCIES
Lock Held:
Lock Name : 0x00000014000000000004000552
Lock Attributes : 0x00000020
Release Flags : 0x40000000
Lock Count : 1
Hold Count : 0
Lock Object Name : 262149
Object Type : Row
Tablespace Name : SYSCATSPACE
Table Schema : SYSIBM
Table Name : SYSINDEXAUTH
Data partition id : 0
Mode : X - Exclusive
Application 2:
Lock requested: NS on SYSINDEXAUTH
Lock Held:
Lock Name : 0x0000010C00000000000C001252
Lock Attributes : 0x00000010
Release Flags : 0x40000000
Lock Count : 2
Hold Count : 0
Lock Object Name : 786450
Object Type : Row
Tablespace Name : SYSCATSPACE
Table Schema : SYSIBM
Table Name : SYSDEPENDENCIES
Data partition id : 0
Mode : U - Update |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* DB2 UDB Version 9.7 *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error description field for more information. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Version 9.7 FixPack 5. *
**************************************************************** |
| Local Fix: |
Run the ALTER TABLE ATTACH PARTITION commands in sequence rather
than in parallel. |
| available fix packs: |
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
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
|
| Solution |
Problem was first fixed in DB2 UDB Version 9.7 FixPack 5. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 15.03.2011
16.12.2011
16.12.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP5
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.5
|
 |
