> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Java 17

ActivePivot is compatible with Java 11 and Java 17.

## Memory Monitoring

Please note that to be able to be compatible with Java 17, we are no longer reporting the off-heap memory allocated with java's internal MBeans.
Instead, you can use the newly created MBeans located in `DirectMemoryMonitoring` for the information you wanted regarding memory consumption from ActivePivot.
Additionally, MAC can be used for deeper investigations.

## JVM Options

ActivePivot needs access to some internal modules to function properly, which are now protected in JDK 17, so the following argument is necessary:

```
--add-opens java.base/java.util.concurrent=ALL-UNNAMED
```

Additionally, to use Arrow as a source or an export format, the following option is required in JDK 17 by Arrow:

```
--add-opens java.base/java.nio=ALL-UNNAMED
```

This list is not exhaustive: we don't guarantee that it is enough to run ActivePivot. Our dependencies may
require additional `add-opens`. Moving forward JDK versions, if you see in a stack trace that module `XXX`
does not open `YYY` to an unnamed module, it means you are missing the JVM option
`--add-opens XXX/YYY=ALL-UNNAMED`.