| --- |
| id: functions-runtime-java-options |
| title: Customize Java runtime options |
| sidebar_label: "Customize Java runtime options" |
| description: Customize Java runtime options in Pulsar. |
| --- |
| |
| :::note |
| |
| This setting **only** applies to process runtime and Kubernetes runtime. |
| |
| ::: |
| |
| To pass additional arguments to the JVM command line for every process started by a function worker, you can configure the `additionalJavaRuntimeArguments` in the `conf/functions_worker.yml` file as follows. |
| - Add JVM flags, like `-XX:+ExitOnOutOfMemoryError` |
| - Pass custom system properties, like `-Dlog4j2.formatMsgNoLookups` |
| |
| ```yaml |
| additionalJavaRuntimeArguments: ['-XX:+ExitOnOutOfMemoryError','-Dfoo=bar'] |
| ``` |
| |
