[ { type: install message: < Preferences menu, select Database -> Third Party JDBC Drivers and add the proper jar. Do not install 5.1 version of mysql jdbc connector; see https://docs.oracle.com/en/database/oracle/sql-developer/18.4/rptig/installing-sql-developer.html#GUID-3F68CF20-D03D-431C-A9A2-0EB971F06448 The Java versions supported by this port are in range from 11 to 17. The default is 11. Add DEFAULT_VERSIONS+=java=N to /etc/make.conf if you want to use Java "N", but all Java ports will also be affected. Or add SQLDEVELOPER_JAVA_VERSION=N to /etc/make.conf if you want to override the Java version for this port only. EOM } ]