SQLDeveloper by default has limited connection configuration possibilities (thin jdbc driver) so 'edge cases' may need the Oracle (instant) Client install and full *.ora configuration
- sqldeveloper
- Tools preferences -> database -> advanced -> use oci/thick driver
- oracle client
- connection type TNS->connect identifier
- click kerberos to allow null username/password (or OS authentication but I think that has more consequences)
(and effectively kick the config back to the oracle thick client *.ora files and 'sqlplus' C code (where kerberos may not be configured))
