Standard Options for Java: Options guaranteed to be supported by all implementations of the Java Virtual Machine (JVM). They're used for common actions, such as checking the version of the JRE, …

Feb 28, 2025 · In this article, we’ve explored the differences between the JDK_JAVA_OPTIONS and JAVA_TOOL_OPTIONS with practical examples. We’ve also learned when to use each variable, …

Oct 18, 2023 · The _JAVA_OPTIONS is an environment variable that you can use to pass the Java options to a JVM process. The passed Java options are treated similarly to the command line …

Aug 9, 2016 · You can use _JAVA_OPTIONS to pass options to any JVM process started on your system. For example, When a JVM starts, it parses the value of _JAVA_OPTIONS as if the …

Mar 20, 2025 · JDK_JAVA_OPTIONS and JAVA_TOOL_OPTIONS are environment variables used to pass Java Virtual Machine (JVM) options to configure the JVM without modifying the scripts.

Nov 28, 2025 · When configuring Java applications, setting environment variables to pass options to the Java Virtual Machine (JVM) is a common practice. However, three environment variables often …

Aug 19, 2025 · Here are the 21 most important Java JVM options developers can use to configure the JDK at runtime: -Xms sets the initial heap size for the JVM. -Xmx sets the maximum heap size for …

On Windows, use set instead of export. Create a file that contains the options, and specify that file on the command line or in the IBM_JAVA_OPTIONS environment variable by using the -Xoptionsfile …

Environment variables like _JAVA_OPTIONS allow you to set global options for Java applications. By exporting this variable, you can ensure that specific JVM settings are applied to all Java processes …

There is one more difference: _JAVA_OPTIONS is Oracle specific. IBM JVM is using IBM_JAVA_OPTIONS instead. This was probably done to be able to define machine-specific options …