Setting the JVM Heap Size at Runtime

Summary

How to set the JVM heap size from the command line.

Synopsis

Setting the initial and maximum JVM heap size from the command line can be performed in InstallAnywhere 2015 and later. To set the JVM heap size from the command line, follow the steps below.

Discussion

To set the initial JVM heap size, at the command line, enter:
- <installer_name> -jvmxms <size>
To set the maximum JVM heap size, at the command line, enter:
- <installer_name> -jvmxmx <size>

The default size for these values is measured in bytes. Append the letter k or K to the value to indicate kilobytes, m or M to indicate megabytes, and g or G to indicate gigabytes. For example, to set the maximum JVM heap size to 25 megabytes, enter the following:

install.exe -jvmxmx 25m

Additional Information

Depending on whether your JVM supports the _JAVA_OPTIONS environment variable, you can set the JVM heap size to the environment variable immediately before launching your installer. For example, on Windows you can run the following commands to set the maximum heap size to 100 MB: