Splunk DB Connect: How to resolve "JRE Status: Unsupported JRE detected"?

[Amohlmann]

I have just installed Splunk DB Connect on a fresh install of Splunk.
When I go to set it up, it says:

JRE Status: Unsupported JRE detected
Using Oracle Corporation JRE version 1.8, OpenJDK 64-Bit Server VM
Need Oracle Corporation JRE version 1.8

Originally I had JRE version 1.7, so I removed 1.7 and installed 1.8. I have run all the updates I can so it is running on the latest update of v 1.8.
If I go java -version I get the following:

openjdk version "1.8.0_101"
OpenJDK Runtime Environment (build 1.8.0_101-b13)
OpenJDK 64-Bit Server VM (build 25.101-b13, mixed mode)

Is it the OpenJDK 64-Bit Server VM that is the issue? Do I have to remove this?

I have tried a few other things since originally posting the question, but still cannot for the life of me get it to work.

So, I think my problem is actually I only have OpenJDK.
I have installed the correct JRE from Oracle (got from here: http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html)

But It will not let me set the JRE Installation Path in the General Settings of DBX.

[timpedlar]

DB Connect 3.1.4 now supports OpenJDK 8.

https://docs.splunk.com/Documentation/DBX/latest/ReleaseNotes/Releasenotes

Update to 3.1.4 and your error will go away!

[weiwang1]

Not necessarily: DBConnect 3.1.4 doesn't recognize OpenJDK 1.8 on Ubuntu server

I have the exact same issue.

[mahsaalaeifar]

I installed jdk-8u181-linux-x64.rpm instead of the previous jre 8
then change the java home to point to new JDK (/usr/java/jdk1.8.0_181-amd64) the issue gone !

[Amohlmann · Accepted solution]

I found the issue. I did not have to delete or remove anything. The thing was that I needed to install the Oracle version of JRE (got from here http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html

You need to install this in the same directory where the other java stuff is stored. For me I needed to make sure I threw the installation in /usr/lib/jvm

Then I had to change the JRE Installation Path to:
/usr/lib/jvm/jre1.8.0_101

JRE Status is now up

[richgalloway]

DB Connect is very fussy about the JRE it uses. Removing the OpenJDK should fix it.

[Amohlmann]

So, I think my problem is actually I only have OpenJDK.
I have installed the correct JRE from Oracle (got from here: http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html)

But It will not let me set the JRE Installation Path in the General Settings of DBX.

[jamin358]

This should be the accepted answer