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DB2 - Problem description

Problem IC95450 Status: Closed

DB2GCF UTILITY UPDATES THE DB2NODES.CFG TO SHORT HOSTNAME INSTEAD OF FULLY
QUALIFIED HOST NAME

product:
DB2 FOR LUW / DB2FORLUW / A50 - DB2
Problem description:
During a TSA automated database partition failover, db2gcfg 
updates the db2nodes.cfg file. In some cases this will be 
updated 
to the short name of the host instead of the fully qualified 
hostname. 
Example: 
 
$ cat db2nodes.cfg 
 
0 test04.torolab.ibm.com 0 
1 test04.torolab.ibm.com 1 
 
$ hostname (Run from test03) 
test03.torolab.ibm.com 
 
$ hostname (Run from test04) 
test04.torolab.ibm.com 
 
 Online IBM.ResourceGroup:db2_db2inst1_0-rg Nominal=Online 
        '- Online IBM.Application:db2_db2inst1_0-rs 
                |- Offline 
IBM.Application:db2_db2inst1_0-rs:test03 
                '- Online 
IBM.Application:db2_db2inst1_0-rs:test04 
Online IBM.ResourceGroup:db2_db2inst1_1-rg Nominal=Online 
        '- Online IBM.Application:db2_db2inst1_1-rs 
                |- Offline 
IBM.Application:db2_db2inst1_1-rs:test03 
                '- Online 
IBM.Application:db2_db2inst1_1-rs:test04 
Online IBM.Equivalency:db2_db2inst1_0-rg_group-equ 
        |- Online IBM.PeerNode:test04:test04 
        '- Online IBM.PeerNode:test03:test03 
Online IBM.Equivalency:db2_db2inst1_1-rg_group-equ 
        |- Online IBM.PeerNode:test04:test04 
        '- Online IBM.PeerNode:test03:test03 
 
In the above setup, if I then run the "rgreq -o move 
db2_db2inst1_1-rg" command as root, it will cause TSA to 
failover database partition 1 from host test04 to ceha03. This 
works, but the problem is that the db2nodes.cfg file is being 
updated with the short hostname as seen below 
: 
 
$ cat db2nodes.cfg 
 
0 test04.torolab.ibm.com 0 
1 test03 0 ceha03 
 
The correct behavior would be for the DBM to update the 2nd line 
of the db2nodes.cfg as follows: 
 
1 test03.torolab.ibm.com 0 ceha03.torolab.ibm.com 
 
This is because the hosts OS hostname value is set to 
'test03.torolab.ibm.com'.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 10.5 and Fix Pack 3                   * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 10.5 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 9 for Linux, UNIX, and Windows

Solution
Problem was first fixed in DB2 Version 10.5 and Fix Pack 3
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
27.08.2013
27.02.2014
27.02.2014
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
10.5.0.3 FixList
10.5.0.3 FixList