In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:

Which statement is true?
- Dynamic service registration cannot be used for this database instance
- The LREG process registers services dynamically with the LISTENER_1 listener
- LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
- There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database instances
- The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
Answer(s): C
Reference:
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292
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