I’ve also switched up to the TCP configuration of H2 - this way, when you’re using db tools (dbVisualizer, etc) you won’t get the ‘database is locked’ message.
<connection-url>jdbc:h2:tcp://centosw02//opt/wildfly-1010.camunda.camel/camunda-h2-dbs/process-engine;MVCC=TRUE</connection-url>
Forgot to add that you’ll need to download and run H2 as a server - but, as everything else with H2… reasonably straightforward.