> The JVM in the EMS Server
> The Java virtual machine (JVM) is a virtual machine on the Java platform, capable of running inside the EMS server. Select independent Java modules can operate in the JVM and plug into the EMS server. The JVM is required to use the following TIBCO Enterprise Message Service features:

> ● | Extensible Security—see Chapter 9, Extensible Security.

> ● | Database Stores—see Chapter 10, Using Database Stores.

> Enabling the JVM
> The Java virtual machine is enabled in the EMS server, through parameters in the tibemsd.conf configuration file. The parameters that enable and configure the JVM are:

> ● | jre_library—enables the JVM.

> ● | jre_option—allows you to pass standard JVM options, defined by Sun Microsystems, to the JVM at start-up.

> For more information about these parameters, see JVM Parameters.

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