Site Admin 26.3
Site Admin Installation Guide

# Configure the Java Heap Size

You can configure the Java heap size for Site Admin by setting the size in the Java run command.

To configure the Java heap size

- At the command line, send the java run command with the `Xmx"[HeapSize]"m` argument set. For example:

      java -Xmx2048m -Didol.idolsiteadmin.home=[home directory] -Dserver.port=[port] -jar siteadmin.jar

  The default value is 1024.

If you run Site Admin as a service on Windows, you can also add the `Xmx` property to the `dataadmin.xml` file.

If you run Site Admin as a service on Linux, you can modify the `JAVA_MAX_HEAP_SIZE` variable in the start scripts (`siteadmin.sh` for SystemV, or `siteadmin.service` for systemd).

When you modify the Site Admin configuration by modifying the XML file or start scripts, you must restart Site Admin to apply your configuration changes.

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Version 26.3 | Last updated July 2026

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Product: Site Admin 26.3

Topic Title: Configure the Java Heap Size