Specify JVM settings for DataStax Studio

Studio enables you to specify JVM command-line options for the local Studio server.

Studio runs with the following default JVM settings:

These default values are expressed as follows:

export STUDIO_JVM_ARGS="-Xms256m -Xmx4g -Djava.io.tmpdir=/tmp"

You can adjust them as needed for your environment.

To adjust these settings, do the following:

Stop Studio if it is running.
Create a setenv file:
- Linux and macOS: Create setenv.sh.
- Microsoft Windows: Create setenv.bat.
Add your Studio JVM arguments to the setenv file using the following format:
```
export STUDIO_JVM_ARGS="JVM_OPTIONS"
```
For example, to change the maximum heap size to 8 GB, add the following line to the setenv file:
```
export STUDIO_JVM_ARGS="$JVM_OPTS -Xmx8g"
```
Save the file in the same directory as your Studio server.sh file, such as datastax-studio/bin/setenv.sh.
Restart Studio to apply the changes.

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