Setting JVM properties

Deploying BIRT Viewer Toolkit within some application server environments requires Java configuration to avoid Java Virtual Machine (JVM) errors. Set the following JVM properties:

Initial heap size

Include -Xms64m as a Java option.

Maximum heap size

Include -Xmx512m as a Java option.

Maximum size for the permanent generation heap

Include -XX:MaxPermSize=128m as an option.

How to configure JVM properties for Tomcat 6.x on Windows

1 From the Windows Start menu, choose All Programs➛Apache Tomcat 6.x➛Configure Tomcat.

2 On Apache Tomcat 6.x Properties, choose Java.

3 Change the value of the Initial memory pool to 64.

4 Change the value of the Maximum memory pool to 512.

5 Add -XX:MaxPermSize=128m to Java Options, as shown in Figure 2‑4.

Figure 2‑4 Apache Tomcat 6 Java configuration

6 Choose OK.

7 Restart Tomcat.

How to configure JVM properties for JBoss on Windows

1 Navigate to the following directory:

<JBoss install directory>\bin

2 Open run.bat.

3 Add -Xms64m -Xmx512m and -XX:MaxPermSize=128m to the JAVA_OPTS variable specification.

4 Save and close run.bat.

5 Restart Tomcat.

How to configure JVM properties for Tomcat 6 on Linux

1 Navigate to the following directory:

/etc/tomcat6

2 Open tomcat6.conf.

3 Add -XMs64m -XMx512m and -XX:MaxPermSize=128m to the JAVA_OPTS variable specification.

4 Save and close tomcat6.conf.

5 Restart Tomcat.