Release 7.4.0: Added new property com.openexchange.server.fullPrimaryKeySupport in server.properties to enable using primary keys on all database tables

[Guest]

This change enables customer to have all database tables fully supported with primary keys so that OX backends can be used in combination with the Galera Cluster.

Only set this parameter to 'true' if you would like to set up a completly new 7.4 installation.

If you migrate from a previous version to 7.4 use the default value ('false'). With a migration full primary support is available with 7.6