In my circumstances the error was due to the fact the listener did not have the db\'s service registered. I solved this by registering the services. Example:
My descriptor in tnsnames.ora
:
LOCALDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = LOCALDB)
)
)
So, I proceed to register the service in the listener.ora
manually:
SID_LIST_LISTENER =
(SID_DESC =
(GLOBAL_DBNAME = LOCALDB)
(ORACLE_HOME = C:\\Oracle\\product\\11.2.0\\dbhome_1)
(SID_NAME = LOCALDB)
)
Finally, restart the listener by command:
> lsnrctl stop
> lsnrctl start
Done!