I have a Splunk app db connect running on version 3.4.2 so is it important to run those exsisting databases on that version ?
You should check that Splunk + Splunk DB Connect + JDK + JDBC drivers and DB backends are compatible. Just look those from Splunk DB Connect documentations.
3.4.2 is quite old and you should update it more recent versions or later that update will be more harder than now. Earliest version what you could load from splunkbase is 3.9.0 and latest is 3.13.0.
You should check that Splunk + Splunk DB Connect + JDK + JDBC drivers and DB backends are compatible. Just look those from Splunk DB Connect documentations.
3.4.2 is quite old and you should update it more recent versions or later that update will be more harder than now. Earliest version what you could load from splunkbase is 3.9.0 and latest is 3.13.0.