release data store using ttMigrate from the newer release, and then reconnecting all applications to the upgraded data store.

Note: The ttMigrate -r-renameoption, used to rename the owner of data store tables, cannot be used with online upgrades.

The general steps in an online upgrade include:

Disconnect all applications from the data store to be upgraded.

Shut down replication on the system being upgraded.

Back up the data store residing on the system being upgraded using the older release’s ttMigrate with the -c option.

Install the newer release of TimesTen on the system being upgraded.

Restore the replicated data store on the system being upgraded using the newer release’s ttMigrate with the -r option.

Reconnect all applications to the upgraded data store.

Restart replication on the upgraded system.

Note: After ttMigrate has been used, all autorefresh cache groups in the upgraded data store have AUTOREFRESH STATE set to OFF, no matter how it was set on the data store prior to the upgrade. Reset AUTOREFRESH STATE to ON by using the ALTER CACHE GROUP statement.

To maintain continuous availability, applications will continue to run on one copy of the data store while the upgrade is performed on the disconnected copy of the data store. TimesTen replication retains updates made to the active copy of the data store during the upgrade period and then transfers and applies the updates to the upgraded data store when replication is restarted. When the replicated updates have been completely applied, the applications may be reconnected to the upgraded data store.

This timeline illustrates the steps for performing an online upgrade while replication is running, where the upgrade system is the system on which the data store upgrade is being performed, and the active system is the system containing the data store that the application will remain connected to:

Step Upgrade System

Active System

1.Configure replication to replicate to the active system using static ports.

Configure replication to replicate to the upgrade system using static ports.

Data Store Upgrades 105

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Oracle Audio Technologies B31679-01 manual Step Upgrade System Active System

B31679-01 specifications

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