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If your Linux applications are graphical, set the ‑=true to prevent Java from trying to connect to an X-Server for image processing. JasperReports Server doesn’t provide a virtual X frame buffer on Linux. Set JAVA_OPTS=%JAVA_OPTS% =.TransformerFactoryImpl Set JAVA_OPTS=%JAVA_OPTS% =.SOAPFactoryImpl Set JAVA_OPTS=%JAVA_OPTS% =.SOAPConnectionFactoryImpl Set JAVA_OPTS=%JAVA_OPTS% =.MessageFactoryImpl Set JAVA_OPTS=%JAVA_OPTS% -XX:+CMSClassUnloadingEnabledĪdditional options for Java 1.6-1.7 and JBoss Set JAVA_OPTS=%JAVA_OPTS% -XX:MaxPermSize=512m -Xss2m -XX:+UseConcMarkSweepGC For 32-bit systems, see Checking your Java JVM Options. The following example settings are for 64-bit systems. For information about changing a JVM option setting for your particular environment, see your application server documentation. The following tables present some typical settings of JVM options that affect JasperReports Server. Other JVMs may or may not have equivalent settings. The settings in this section apply specifically to the Oracle/Sun JVM. The options that you should set and the values they are set to depend on your version of Java and the application server that you use. Java Virtual Machine (JVM) runtime parameters normally need to be explicitly set so that the memory settings have values that are larger than the default settings. JasperReports Server is supported on Java 1.6 and 1.7.