Java version on migRaven Update server

Replacing the existing open source Java Azul Zulu JRE installation with another / newer Java Azul Zulu JRE version

To install the migRaven.24/7 we always deliver a Java based Neo4j graph database.

Neo4j strongly recommends using the Java Azul Zulu JRE.

Upgrading the existing Java Azul Zulu JRE installation:

Java Azul Zulu JRE runs on the migRaven.24/7 server needed for the Neo4j database.

Updating the Java version without registering the Windows service again leads to malfunctions.
In this case, the migRavenDB - aikuxGraph service can no longer be started.

Please proceed in the order below:

Verify your currently installed Java version in the Windows command prompt by running the command line.

Java -version
Result of the query


Complete the below migRaven.24/7 services in the order presented.

1. migRavenResource Scan Service Host
2. migRavenADScanServiceHost
3. migRavenCore Service Host
4. migRavenDBServiceHost
5. migRavenDB – aikuxGraph (up to incl. migRaven.24/7 of version 7.2.22207.1)
5a. Neo4j Graph Database – migRavenGraphDB (from incl. migRaven.24/7 of version 7.2.22271.1)


Uninstall the migRavenDB – aikuxGraph service by running the following command line in the Windows command prompt:

Up to and including migRaven.24/7 of version 7.2.22207.1 Uninstalling the migRavenDB - aikuxGraph Services:

"C:\Program Files\migRavenDB\bin\neo4j.bat" uninstall-service

From inclusive migRaven.24/7 of version 7.2.22271.1 Uninstalling the Neo4j Graph Database – migRavenGraphDB Services:

"C:\Program Files\migRavenGraphDB\bin\neo4j.bat" uninstall-service
Result of running the command


If necessary, confirm the UAC.


The service is now uninstalled.


Uninstall the currently installed Azul Zulu JRE.


Deactivate the remaining four migRaven Services:

Disable services
disabled services

Start the migRaven.24/7 servers new.

Install the latest, from migRaven recommended Java Azul Zulu JRE version.
Also install the "Set JAVA_HOME variable".

As above, verify the Java version that is now installed.

Java -version
Determination of the Java version


Install the migRavenDB - aikuxGraph Service again via the Windows command prompt, up to and including migRaven.24/7 version 7.2.22207.1.

"C:\Program Files\migRavenDB\bin\neo4j.bat" install-service

Install the Neo4j Graph Database – migRavenGraphDB Service again via the Windows command prompt, from inclusive migRaven.24/7 version 7.2.22271.1.

"C:\Program Files\migRavenGraphDB\bin\neo4j.bat" install-service


Make the remaining four migRaven services up again Automatically start.


Start the migRavenDB - aikuxGraph service, up to and including migRaven.24/7 version 7.2.22207.1.

Start the Neo4j Graph Database – migRavenGraphDB service, from inclusive migRaven.24/7 version 7.2.22271.1.


Open on the migRaven.24/7 server your trusted browser and call the site http://localhost:7474 on. If the call works, the update has been successfully completed.


Now start the remaining four migRaven Services in the order listed:

1. migRavenDBServiceHost
2. migRavenCore Service Host
3. migRavenADScanServiceHost
4. migRavenResource Scan Service Host

To finish, open the migRaven.24/7 Admin Client and manually rescan your Active Directory.

Permanent link to this post: https://help.migraven.com/java-version-auf-migraven-server-updaten/

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