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DB2 - Problem description

Problem IC66316 Status: Closed

DB2 EXPORT CREATES EXCESSIVE LOCKING ON CATALOG TABLES.

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
Multiple locks on SYSDEPENDECIES and SYSSEQUENCES for rows that 
are not related to the table that is being exported. The problem 
occurs only when the select part of the statement uses the wild 
 
card *: 
 
db2 export to <FILE> of ixf messages <MSG FILE> select * from 
<source schema>.<source_table> 
 
The query that is executed againtst the catalog tables with the 
isolation level that the package has been bound. In this case 
RS. 
 
The problem can be avoided if it is exported to DEL or ASC. Also 
if the list of columns is provided in the export statament.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* db2 export causes excessive locking. Other                   * 
* applicationswilltimeout generally waiting for SYSDEPENCIES   * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Migrate to v95fp6Avoid using 'select *" in the               * 
* exportcommand. Provide listof columns instead.               * 
****************************************************************
Local Fix:
1. Use export to DEL or ASC 
2. List the name of the columns for export. Avoid using *.
available fix packs:
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
fixed in v95fp6
Workaround
not known / see Local fix
Comment
FIN
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC66531 IC66532 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
15.02.2010
22.06.2010
22.06.2010
Problem solved at the following versions (IBM BugInfos)
9.5.FP6,
9.5.FP6AVOID
Problem solved according to the fixlist(s) of the following version(s)
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