Oracle Audio Technologies B31679-01 manual Client/Server online upgrade

Performing a Client/Server online upgrade from TimesTen version 6.0 and above

As of TimesTen 7.0, TimesTen Server is able to talk directly to all user applications linked with TimesTen Client ODBC driver version 6.0 or higher. This makes the procedures for upgrading a TimesTen Client/ Server installation much simpler. There are at least two possible ways to upgrade a TimesTen Client/Server installation, depending on your requirements for client access to the data store:

•If you do not need the data store being upgraded to be available continuously to your client applications, you may simply stop the old server, perform the migration of the data store using ttMigrate, and then start the new version of the server, which should be configured to listen on the same server port.

•If it is critical that the data store be continuously available to the client applications, you may use the procedure outlined in “Performing an online upgrade with replication” on page 104 to keep a second copy of the data store available during the migration of the first copy.

Note: For security reasons, client/server communication is not normally allowed between TimesTen 7.0 and previous versions. In order to perform an online upgrade with client/server, you must start the main TimesTen 7.0 daemon with the -insecure-backwards-compat option. See “Communicating with older versions of TimesTen” on page 71 of the Oracle TimesTen In-Memory Database Operations Guide for more information.

Client/Server online upgrade

To perform an online upgrade of a TimesTen Client/Server system to a new major version with minimal reconfiguration, perform the following steps:

1.Stop the TimesTen Server on the old version of TimesTen. From this point until the TimesTen Server for the new version is started, your client applications will not have access to the data store. Any attempted updates to the data store by the clients will fail, and you should stop user applications if necessary.

2.Install the new version of TimesTen. At install time, configure the server to listen on the same port as the old version of TimesTen.

116 Oracle TimesTen In-Memory Database Installation Guide