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Oracle Database 19c: Data Guard Administration Sample Questions:

1. The Oracle database 19c Observer is currently running on host1 and you wish to have it running on host2.
Examine this list of possible steps:
1) Stop the observer on host1
2) Disable Fast-Start Failover
3) Update the broker configuration with the new observer hostname
4) Enable Fast-Start Failover
5) Start the Observer on host2
Which contains the minimum required steps to move the observer to host2?

A) Execute only task 5
B) Execute tasks 1 and 5
C) Execute tasks 1, 2, 3, 4, and 5
D) Execute tasks 1, 3, and 5

2. Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?

A) It is necessary to use the failover clause for an address_list with multiple address lists in the tnsnames.ora file.
B) Install the oracle-database-preinstall-19c package to set the kernel parameters for Oracle Net based on the Data Guard best practice guidelines.
C) Enterprise Manager does not require static service registration to restart instances during the course of broker operations.
D) Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net.
E) A static service must be registered with the local listener to enable DGMGRL to restart instances during the course of broker operations.

3. Which three are prerequisites for using Data Guard Broker?

A) A statically defined listener end-point must be registered with the local listener on the servers hosting the standby database instances.
B) The broker configuration files for a RAC database must reside in shared storage accessible by all the RAC database instances.
C) DG_BROKEB_START must be set to TRUE for a database instance before adding the database to the broker configuration.
D) If any database in the configuration is a RAC database, then the broker configuration files must reside in shared storage accessible by all database instances for all databases in the broker configuration.
E) The primary and standby databases must run the same version of the Oracle Database server.
F) Network connectivity to the primary database instance must be defined on the servers hosting the standby database instances.

4. You notice that the SQL apply lag on your logical standby database has increased but the redo transport lag has not.
Which four could be reasons for the increase in SQL apply lag?

A) An increased number of bulk updates on the primary
B) An increased number of bulk inserts on the primary
C) An undersized shared pool
D) Many SQL apply operations do full table scans
E) An undersized undo tablespace on the logical standby
F) The standby redo log files are undersized on the primary database

5. Which TWO are TRUE about offloading backups to a physical standby database in a Data Guard environment?

A) The standby database must be registered in an RMAN catalog before the primary database has been registered.
B) The standby database can not be registered in an RMAN catalog if the primary database has not been registered.
C) Backups of the standby control file taken while connected to the catalog where the database is registered, may be used to restore the control file on the primary database.
D) The standby database must be registered in an RMAN catalog after the primary database has been registered.

Solutions:

Question # 1 Answer: D

Question # 2 Answer: D,E

Question # 3 Answer: D,E,F

Question # 4 Answer: A,C,D,E

Question # 5 Answer: C,D