By default, Converged Application Server serializes and de-serializes call states, which optimizes your standalone domains for memory utilization. However, you can disable serialization in Converged Application Server to optimize your standalone domains for performance. You configure whether Converged Application Server uses serialization by using the wlss.local.serialization system property. This system property must be provided to the Java Virtual Machine (JVM) that starts Converged Application Server.

When you set the wlss.local.serialization system property to true, Converged Application Server optimizes a standalone domain for efficient memory utilization. Maintain this setting if memory utilization is of concern in your environment, especially in scenarios where the application session time-out values are large. Converged Application Server serializes the call state after a dialog is established and de-serializes that call state as it becomes necessary to do so. Note that performance may be impacted by the serialization and de-serialization of call states.

When you set the wlss.local.serialization system property to false, Converged Application Server optimizes a standalone domain for performance. Set this property to false when performance is critical in your environment and calls have fewer hold times or lower application session time-out values. Converged Application Server does not serialize or de-serialize call states. Note that, since the call state are held in memory for the life of each call, an increase in the hold times for the calls has an impact on memory utilization.

To enable or disable serialization:

1. Go to the Domain_Home/bin directory, where Domain_Home is the domain's home directory.

2. Open the startWebLogic.sh script in a text editor.

3. Change the wlss.local.serialization system property to true or false as required.

4. Save and close the file.