The big data service uses the Java Runtime Engine 8. It installs with a local version of Java bundled alongside the service, but it can be upgraded by installing a more recent version of Java and reconfiguring the service to use a system install instead.

1. Download and install the latest LTS version of Java 8 from java.com.

2. Stop the Big Data Service

• Open Windows Services.
• Find “Intelligent Plant Big Data Service”.
• Right-click and select “Stop”.

3. Launch the Big Data Service manager

• Open a cmd prompt in administrator mode.
• Navigate to %ProgramFiles%\Intelligent Plant\Big Data\es\bin\
• Enter: service.bat manager

4. Under the Java tab, update the Java Virtual Machine path to point to the newly installed system JRE.

The path should point to the jvm.dll file inside the bin\server folder of your Java installation (e.g. C:\Program Files\Java\jre1.8.0_491\bin\server\jvm.dll).

Click Apply and close the properties window.

5. Restart the Big Data Service

• Open Windows Services.
• Find “Intelligent Plant Big Data Service”. Right-click and select “Start”.

6. Finally, when satisfied the Big Data Service is running correctly, the bundled version of JRE can be safely removed.

• Open Windows Explorer
• Navigate to %ProgramFiles%\Intelligent Plant\Big Data
• Delete folder “jre”

Warning. These custom settings will be reset if software is re-installed/upgraded.

If an issue is encountered after switching to the system JRE:

1. Stop the Big Data Service.
2. Reopen the Big Data Service manager (service.bat manager).
3. Under the Java tab, revert the Java Virtual Machine path to the original bundled JRE location.
4. Click Apply and restart the Big Data Service.

If the bundled jre folder has already been deleted, restore it from backup before performing the above steps.