I know this is an old one, but my searches brought me here and it might bring someone else here. After going through installing new java versions and all the JAVA HOME settings, I used my EDR tool and noticed this file was being called: /opt/splunk/etc/apps/splunk_app_db_connect/linux_x86_64/bin/customized.java.path It had reference to the older java versions and not the new one. Updated the path in there.  So for anyone who finds this and has problems starting up the taskserver after updating Java. search for the "customized.java.path" file in the dbConnect app folders.   ... View more