（132）The tnsnames.ora file has an entry for the service alias ORCL as follows:

ORCL =( DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.156.24.216)(PORT = 1521)) (CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl.oracle.com)))

The TNSPING command executes successfully when tested with ORCL, but you are not able to connect to the database instance with the following command:

SQL> CONNECT scott/tiger@orcl

What could be the reason for this?

A. The listener is not running on the database node.

B. The TNS_ADMIN environmental variable is set to a wrong value.

C. The orcl.oracle.com database service is not registered with the listener.

D. The DEFAULT_DOMAIN parameter is set to a wrong value in the sqlnet.ora file.

答案：（C）

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Oracle 11G OCP 1Z0-052 132