Event Processing Network EPN Management Application Lifecycle Management

Overview of Application Tasks 3-3 If you disable this feature and then wish to re-enable it, you must do so as follows: 1. Undeploy your Oracle CEP application. 2. Shut down the Oracle CEP server. 3. Edit the startwlevs.cmdsh file to either remove the -Dcom.oracle.ocep.config.version.enabled system property or set it to true . 4. Start the Oracle CEP server. 5. Deploy your Oracle CEP application. Failure to do so may cause rule propagation to fail in a multi-server domain and may prevent the Oracle CEP Visualizer from maintaining a consistent view of the Oracle CEP servers in a multi-server domain.

3.4.2 Resource Configuration History Management

You can manage the configuration history of the following Oracle CEP resources: ■ Oracle CEP high availability adapters ■ Oracle CQL rules For more information, see Section 8.1, Managing Resource Configuration History .

3.4.3 Application Configuration History Management

You can manage the configuration history for a given application. This allows you to see a summary of all the configuration changes made to all resources of a given application. For more information, see Section 8.2, Managing Application Configuration History .

3.4.4 Application Lifecycle and Configuration History Management

When you deploy an application, the Oracle CEP server creates a new configuration history for the application. When you update an application, the Oracle CEP server erases the existing configuration history and creates a new configuration history for the application. When you uninstall an application, the Oracle CEP server erases the configuration history for the application. For more information, see Section 3.2, Application Lifecycle Management .

3.4.5 Multi-Server Domains and Configuration History Management

When you deploy an application to a multi-server domain, consider the following configuration history management restrictions: ■ Section 3.4.5.1, Rejoining a Multi-Server Domain ■ Section 3.4.5.2, Simultaneous Updates For more information, see Section 9.8, Multi-Server Domain Management .

3.4.5.1 Rejoining a Multi-Server Domain

When an Oracle CEP server joins or rejoins a multi-server domain, the server’s existing configuration history records if any are deleted and replaced with the 3-4 Oracle Complex Event Processing Visualizer Users Guide current multi-server domain configuration history when the Oracle CEP server has synchronized with the primary.

3.4.5.2 Simultaneous Updates

Oracle CEP does not support simultaneous configuration updates from more than one Oracle CEP server in a multi-server domain. Make configuration changes from one Oracle CEP Visualizer instance on one node in the multi-server domain.