sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, LDAP)
ldap.ora
DIRECTORY_SERVERS = (oraoid.xxx.xxx.xxx:389:636)
DEFAULT_ADMIN_CONTEXT = "dc=com,dc=xxx"
DIRECTORY_SERVER_TYPE = OID
jdbc connection string
jdbc:oracle:thin:@ldap://oraoid.xxx.xxx.xx:389/C3DEV1,cn=OracleContext,dc=com,dc=xxx