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TIBCO iProcess® Engine 11.9.1

# Oracle (Windows, UNIX or Linux)

Warning: To provide failure/failover support on the Oracle (UNIX/Linux) variant of the TIBCO iProcess Engine, you must configure the use of Oracle’s Transparent Application Failover (TAF) feature. Oracle TAF enables an application user (such as the iProcess Engine) to automatically reconnect to a database if the connection fail

The TIBCO iProcess Engine Process Sentinels are event driven. On the Oracle (UNIX/Linux) variant of the TIBCO iProcess Engine, the event system is provided using Oracle AQ’s publish/subscribe mechanism. This means that if the database connection fails, the Process Sentinels cannot receive events, and so appear to be unresponsive. To avoid this you must configure TAF so that the connection can be restored. Once the connection is restored, all connections are recovered and normal operation is resumed.

Warning:

If you are running parallel servers, using TAF allows iProcess to switch to an alternative instance if the instance that it is currently using fails.

If you are not running parallel servers, using TAF still means that although iProcess will not function while the database is down, it can recover immediately and automatically when the database is recovered.

To enable the use of TAF with the iProcess Engine, you need to configure TAF support for the service name that you intend to use to connect to the Oracle database. For more information about how to do this, see the TIBCO iProcess Engine (Oracle) for UNIX or Linux Installation Guide.

TAF involves manual configuration of a net service name that includes the FAILOVER_MODE parameter included in the CONNECT_DATA section of the connect descriptor. For more information about TAF, and how to set up and configure it, see Oracle documentation.

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TIBCO iProcess® Engine

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