Which two statements are true regarding listeners?

Which two statements are true regarding listeners? (Choose two.)

Which two statements are true regarding listeners? (Choose two.)

A.
Listeners use only the TCP/IP protocol.

B.
Multiple listener processes can run simultaneously on a host.

C.
Multiple database instances can be registered with a single listener.

D.
The listener-related errors can be traced only at the administrative level.

E.
Only one database instance can be registered with a single listener at any time.



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jean

jean

The listener is a separate process that runs on the database server computer.

It receives incoming client connection requests and manages the traffic of these requests to the database server.

A the listener can only be regarded as TCP / IP protocol, this is wrong, it can also use IPC protocol, Internal Process Communication (IPC)

B multiple listeners can run simultaneously on a host

C multiple databases can be registered to the same monitor

D associated monitoring error only at the management level traceability, error, the user can also be traced in or support level.

LSNRCTL> help trace
trace OFF | USER | ADMIN | SUPPORT []: set tracing to the specified level

E is wrong. Refer to B.

jean

jean

there is a procedure for creating multiple listeners

jean

jean

Configuring multiple Oracle instances (single listener)