You are unable to access the Oracle Enterprise Manager Database Control and connect to a database from a client browser. Which two reasons can cause this problem? (Choose two.)
A.
The dbconsole process is not started on the database server.
B.
The archiver process has not been configured on the database.
C.
The listener service for the instance is not running on the database server.
D.
The log writer process for the instance is not running on the database server.
E.
The tnsnames.ora file on the client machine does not have an entry for the target database.