1Z0-060 · Question #142
Which statement is true about Oracle Net Listener?
The correct answer is C. Service registration with the listener is performed by the listener registration process monitor (LREG). This question tests knowledge of Oracle Net Listener architecture, specifically how services are dynamically registered with the listener.
Question
Which statement is true about Oracle Net Listener?
Options
- AIt acts as the listening endpoint for the Oracle database instance for all local and non-local user
- BA single listener can service only one database instance and multiple remote client connections.
- CService registration with the listener is performed by the listener registration process monitor (LREG)
- DThe listener.ora configuration file must be configured with one or more listening protocol addresses
- EThe listener.ora configuration file must be located in the ORACLE_HOME/network/admin directly.
How the community answered
(56 responses)- A2% (1)
- B4% (2)
- C93% (52)
- D2% (1)
Why each option
This question tests knowledge of Oracle Net Listener architecture, specifically how services are dynamically registered with the listener.
The listener handles only non-local (remote) client connections; local connections bypass the listener entirely and communicate with the database instance directly via IPC, not through the listener.
A single Oracle Net Listener can simultaneously service multiple database instances, not just one; multiple services and instances can all be registered with a single listener.
The LREG (Listener Registration) background process automatically registers the database instance's service information with the local listener at startup and periodically thereafter, enabling dynamic service registration without requiring static entries in listener.ora.
With dynamic service registration performed by LREG, the listener.ora file does not need to contain static listening protocol addresses for each service; services register themselves automatically.
The listener.ora file location can be overridden by the TNS_ADMIN environment variable and does not have to reside in ORACLE_HOME/network/admin.
Concept tested: Oracle Net Listener dynamic service registration via LREG
Source: https://docs.oracle.com/en/database/oracle/oracle-database/19/netag/understanding-oracle-net-architecture.html
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