1Z0-076 practice question 7 of 25

Which THREE are among the various tasks performed by the Data Guard Monitor (DMON) process?

Answer options

A: performing role transitions when switchover requests are made Correct answer

B: maintaining information about all members of the broker configuration in binary configuration files. Correct answer

C: activating role-based services appropriately in the various database instances of the configuration, based on the database role Correct answer

D: communicating with the DMON process of the observer to monitor a primary database in case a fast start failover is required

E: communicating with dkon processes in other database instances that are part of the broker configuration

Correct Answer:

A. performing role transitions when switchover requests are made; B. maintaining information about all members of the broker configuration in binary configuration files.; C. activating role-based services appropriately in the various database instances of the configuration, based on the database role

Explanation

The Data Guard Monitor (DMON) process is the core component of the Data Guard Broker. It is responsible for managing and monitoring the entire Data Guard configuration. Its key tasks include maintaining the configuration's state in binary files, coordinating and executing role transitions like switchovers and failovers upon request, and managing role-dependent database services to ensure they are active only on the appropriate database (typically the primary).

Why Incorrect

D. The observer is a separate client process, not a database process with its own DMON. The observer communicates with the DMON processes on the primary and standby databases.
E. There is no Oracle background process named "dkon". The broker's background process is DMON, which communicates with other DMON processes in the configuration.

References

1. Oracle Database Documentation, 19c, Data Guard Broker, Chapter 1, "Oracle Data Guard Broker Components", Section "The Data Guard Monitor Process". This section details the responsibilities of the DMON process, including maintaining configuration files and managing state transitions.

2. Oracle Database Documentation, 19c, Data Guard Broker, Chapter 4, "Role Transitions", Section "Performing a Switchover". This describes the broker's role in coordinating the switchover, which is handled by the DMON process.

3. Oracle Database Documentation, 19c, Data Guard Broker, Chapter 5, "Managing Client Connectivity", Section "Managing Services". This section explains how the broker manages role-based services.

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