====== TSM server change hostname ======


<box 100% red|Hostname and TSM instances> It can't be greater than 8 characters, with no reserved keywords, nor special characters. The instance name is invalid. It cannot:
  be more than 8 characters long.
  start with sql, ibm, or sys.
  contain characters other than a-z, $, #, @, _, or 0-9.
</box>

For TSM v6 with Unix and Linux systems:

  * Take a backup of the TSM DB
  * Stop the TSM server
  * Stop DB2 instance and DB2 administration server
As root:
<code>
. /tsm/tsmh/config/sqllib/db2profile :
	db2admin stop
	db2stop
</code>
  * Change the hostname (smitty tcpip for an AIX server) and update the file /etc/hosts
  * As root:
<code>
	db2set -g DB2SYSTEM=<newhostname>
</code> 
The commande db2set is located in the directory <instance directory>/sqllib/adm . 
  * Check the value of DB2SYSTEM with the command: 
<code>
	db2set -all 
</code>
  * Check the value of the parameter SPM name with the command: 
<code>
	db2 get dbm cfg
</code>
  * If needed update the value with:
<code>
	db2 update dbm cfg using spm_name <hostname>
</code>
  * Edit the file db2nodes.cfg, in the directory <instance directory>/sqllib, this file contain the old hostname, change it: 
<code>
	0 oldhostname 0 
</code>
After update:
<code>
	0 newhostname 0 
</code>
  * Move the file from same directory: fm.<old_hostname>.reg to the new hostname, and update the parameter NOTIFY_ADDRESS
  * As root:
<code>
# /usr/ibm/common/acsi/bin/de_chghostname.sh
</code>
  * Restart the TSM server