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    JasperReports® Server is supported on Java 1.6 and 1.7. Java Virtual Machine (JVM) runtime parameters normally need to be explicitly set so that the memory settings have values larger than the default settings. The options and values depend on your version of Java and the application server you use.

    The settings in this section apply specifically to the Oracle/Sun JVM. Other JVMs may or may not have equivalent settings.

    Tomcat and JBoss JVM Options

    The following tables present some typical settings of JVM options that affect JasperReports® Server. For information about changing a JVM option setting for your particular environment, see your application server documentation.

    note-icon-ns_28x28.png.096377d72b9e4cdf6ed53e2300709ec1.png

    The following example settings are for 64-bit systems. For 32-bit systems, see Checking your Java JVM Options.

    JVM Options on Windows (64 bit)

    Options for Java 1.6 and 1.7

    set JAVA_OPTS=%JAVA_OPTS% -Xms1024m -Xmx2048m -XX:PermSize=32m

    set JAVA_OPTS=%JAVA_OPTS% -XX:MaxPermSize=512m -Xss2m -XX:+UseConcMarkSweepGC

    set JAVA_OPTS=%JAVA_OPTS% -XX:+CMSClassUnloadingEnabled

    Additional options for Java 1.6-1.7 and JBoss

    Additional option for JBoss 5.1

    set JAVA_OPTS=%JAVA_OPTS% -Djavax.xml.transform.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl

    JasperReports® Server doesn’t provide a virtual X frame buffer on Linux. If your Linux applications are graphical, set the ‑Djava.awt.headless=true to prevent Java from trying to connect to an X Server for image processing.

    JVM Options on Linux and Mac OSX (64 bit)

    Options for Java 1.6 and 1.7

    export JAVA_OPTS="$JAVA_OPTS -Xms1024m -Xmx2048m -XX:PermSize=32m"

    export JAVA_OPTS="$JAVA_OPTS -XX:MaxPermSize=512m -Xss2m"

    export JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC"

    export JAVA_OPTS="$JAVA_OPTS -XX:+CMSClassUnloadingEnabled"

    Additional options for Java 1.6-1.7 and JBoss

    Additional option for JBoss 5.1

    export JAVA_OPTS="$JAVA_OPTS -Djavax.xml.transform.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl"

    You can set JVM options multiple ways. Sections “Changing GlassFish JVM Options” present step-by-step instructions for performing this task. Alternatively, you can add your JAVA_OPTS settings to any of the following files.

    File

    Add JVM Options After This Line on Windows

    <tomcat>/bin/setclasspath.bat

    set JAVA_ENDORSED_DIRS=%BASEDIR%commonendorsed

    <tomcat>/bin/setenv.bat

    JAVA_OPTS setting can go anywhere in this file.

    <jboss>/bin/run.bat (JBoss 5.1)

    set JAVA_OPTS=%JAVA_OPTS% -Dprogram.name=%PROGNAME%

    <jboss>/bin/standalone.bat (JBoss 7)

    rem Setup JBoss specific properties

    File

    Add JVM Options After This Line on Linux

    <tomcat>/bin/setclasspath.sh

    JAVA_ENDORSED_DIRS="$BASEDIR"/common/endorsed

    <tomcat>/bin/setenv.sh

    JAVA_OPTS setting can go anywhere in this file.

    <jboss>/bin/run.sh (JBoss 5.1)

    export JAVA_OPTS="$JAVA_OPTS -Dprogram.name=$PROGNAME"

    <jboss>/bin/standalone.sh (JBoss 7)

    Add JAVA_OPTS setting before #Display our environment

    Changing JVM Options for Tomcat as a Windows Service

    If you installed JasperReports® Server to use Tomcat running as a Windows service, you can set Java options on the Java Tab of the Tomcat Properties dialog:

    1. Launch the Tomcat configuration application. If you installed the bundled Tomcat, you can do this by going to the <js-install>/apache-tomcat/bin directory and double-clicking the jasperreportsTomcat.exe file. (If you have multiple instances of JasperReports® Server installed, the file name will be of the form jasperreportsTomcatnum<number>.exe, for example, jasperreportsTomcatnum2.exe.) If you installed Tomcat using an existing Windows service, look for an .exe file in the same location, with the same name as your Tomcat service, or select the service from the Windows Start menu:

    Start > Programs > Apache Tomcat > Configure Tomcat (Run as administrator)

    2. In the Apache Tomcat Properties dialog, click the Java tab.
    3. In the Java Options field, add your JAVA_OPTS values according to the tables above.

    Enter only the options preceded by -X or -D, not set JAVA_OPTS=%JAVA_OPTS%.

    Enter only one Java option setting per line.

    4. For instance, add options as follows:

    note-icon-ns_28x28.png.27610575548c1955d9f76698afb77204.png

    These example settings are for 64-bit systems. For 32-bit systems, see Checking your Java JVM Options.

    5. Click Apply, then click OK.
    6. Stop and restart Tomcat.

    Changing JVM Options for Bundled Tomcat on Linux

    If you installed the bundled Tomcat, you can set Java options by editing the appropriate Tomcat configuration script. The steps to change JVM options are:

    1. Open the following file for editing:

    cd <js-install>/apache-tomcat/scripts/ctl.sh

    2. Look for the start_tomcat() function and locate the JAVA_OPTS variable inside it.
    3. Modify the JAVA_OPTS values according to the tables above:
    start_tomcat() {	is_tomcat_running	...	     export JAVA_OPTS="-Xms1024m -Xmx2048m -XX:PermSize=32m -XX:MaxPermSize=512m"            export JAVA_OPTS="-Xss2m -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled"	...}[/code]                    

    note-icon-ns_28x28.png.5d83cc60a111ca98b8e262c0bf5add0b.png

    There may be more than one occurrence of the Java_OPTS variable in the ctl.sh file. Make sure you edit the instance inside the start_tomcat() function.

    4. Save and close the ctl.sh file.
    5. Stop and restart PostgreSQL and Tomcat as described in Starting and Stopping the Server.

    Changing GlassFish JVM Options

    The following sections describe how to set the JVM options for GlassFish for Java 1.6 and 1.7 using the command line or a configuration file.

    Setting GlassFish JVM Options with the asadmin Command

    1. First make sure your GlassFish instance is up and running, then enter the following command as a single line:
    2. Restart the application server using the following commands:

    asadmin stop-domain domain1

    asadmin start-domain domain1

    When running the asadmin create-jvm-options command, you may see error messages like this:

    This message indicates that one of the options specified was already set in the JVM. The command will succeed for all other JVM options on the command line. No further action is necessary.

    Setting GlassFish JVM Options by Editing domain.xml

    1. Open the <glassfish>/domains/domain1/config/domain.xml configuration file for editing.
    2. Add the following lines to the section java-config:
    3. If you're modifying the settings for a running instance of GlassFish, restart the application server using the following commands:

    asadmin stop-domain domain1

    asadmin start-domain domain1


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