The latest version or release of DB2 Connect servers supports the upgrade of DB2 Connect instances, and any existing transaction manager and DB2 Connect federated databases created on the two previously supported versions of DB2 Connect servers.
Since DB2 Connect server products are host database connectivity servers, the only databases that can exist within a DB2 Connect server instance are transaction manager databases and DB2 Connect federated databases. The DB2 Connect transaction manager database stores transaction state information for DB2 coordinated transactions. The sole purpose of DB2 Connect federated databases is to contain information about data sources.
On Linux and UNIX operating systems, you should manually upgrade your DB2 Connect instances after installing the latest version of DB2 Connect. All the remote nodes and databases that you cataloged on the DB2 clients refer to these instances. If you create a new instance, again you will have to catalog nodes, DCS databases, and databases on the DB2 clients that existed in the instances from the previous version.
On Windows operating systems, you have an option to automatically upgrade an existing, supported DB2 Connect copy during installation. Your DB2 Connect instances are automatically upgraded. Alternatively, you can install a new copy of the latest version of DB2 Connect and then manually upgrade your DB2 Connect instances.
This procedure describes how to upgrade by installing a new copy of the latest version of DB2 Connect and then upgrade instances and any existing databases. To automatically upgrade an existing, supported DB2 Connect copy on Windows, follow the same steps specified in Upgrading a DB2 server (Windows) .
Restrictions
If you have DB2 Connect Version 7, you must migrate to DB2 Connect Version 8 first. Refer to the following topic for details: http://publib.boulder.ibm.com/infocenter/db2luw/v8/topic/com.ibm.db2.udb.doc/conn/t0008566.htm
To upgrade your DB2 Connect server: