2025 Oracle Trustable 1z0-076: New Oracle Database 19c: Data Guard Administration Real Test

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Oracle Database 19c: Data Guard Administration Sample Questions (Q81-Q86):

NEW QUESTION # 81
You are licensed to use Oracle Active Data Guard.
Which TWO statements are true after enabling block change tracking on a physical standby database?

A. It allows fast incremental backups to be offloaded to a snapshot standby database, when the physical standby database is converted.
B. It allows fast incremental backups to be offloaded to the physical standby database.
C. It starts the CTWR process on the primary database instance.
D. It starts the CTWR process on the physical standby database instance.
E. It starts the RVWR process on the physical standby database instance.
F. It allows fast incremental backups to be taken on the primary database.

Answer: B,E

Explanation:
Block change tracking is a feature that enhances the efficiency of incremental backups by recording changed blocks in a tracking file. When used with Oracle Active Data Guard:
It starts the RVWR process on the physical standby database instance (A): When block change tracking is enabled on a physical standby database, the Recovery Writer (RVWR) process is initiated. This process is responsible for recording the changes to blocks in the block change tracking file, which is then used to optimize incremental backups.
It allows fast incremental backups to be offloaded to the physical standby database (E): With block change tracking enabled on the physical standby database, fast incremental backups can be offloaded from the primary database. This reduces the workload on the primary database and utilizes the standby database for backup operations, improving overall system performance and efficiency.
Reference:
Oracle Database Backup and Recovery User's Guide
Oracle Active Data Guard documentation

NEW QUESTION # 82
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 inserts on the primary
B. An increased number of bulk updates on the primary
C. Many SQL apply operations do full table scans
D. An undersized shared pool
E. An undersized undo tablespace on the logical standby
F. The standby redo log files are undersized on the primary database

Answer: B,C,D,E

Explanation:
The SQL apply lag on a logical standby database can be caused by several factors:
A: An undersized undo tablespace can lead to delays in SQL apply operations as it may not be able to handle the volume of undo records generated by the SQL apply process.
B: SQL apply operations that do full table scans can consume significant system resources, potentially leading to higher apply lag.
C: An increased number of bulk updates on the primary database may generate a large volume of redo data, which can cause apply lag if the logical standby cannot apply the changes quickly enough.
F: An undersized shared pool may affect the parsing and execution of SQL statements by SQL apply, which can contribute to the apply lag.
Option D is less likely to be a direct cause of SQL apply lag compared to bulk updates, as inserts generate new data rather than modifying existing data, which SQL apply can typically handle more efficiently.
Option E is incorrect because the size of the standby redo log files on the primary database impacts redo transport lag, not SQL apply lag.

NEW QUESTION # 83
Examine this query and its output:

Which two statements are true?

A. The master observer is currently running on ol7.example.com.
B. The master observer is not running, but should run on ol7.example.com.
C. Cats is a bystander database.
D. The master observer is connected to the database on which the query was executed.
E. The master observer is not connected to the database on which the query was executed.

Answer: C,E

Explanation:
D . The database role indicated by FS_FAILOVER_STATUS as BYSTANDER implies that the database is a standby database in the Data Guard configuration. This means the database is neither a primary database nor an active failover target.
E . Since the FS_FAILOVER_OBSERVER_HOST column shows cats, it suggests that this is the host on which the observer would run. However, because the FS_FAILOVER_OBSERVER_PRESENT column is not shown, we cannot definitively state if the observer is currently connected or not. If FS_FAILOVER_OBSERVER_PRESENT is 'YES', the observer is connected, if 'NO', then it's not. In the absence of this column's output, the best assumption based on the available data is that the observer is not connected.
The output shows that the FS_FAILOVER_STATUS is BYSTANDER, which indicates that the database in question is not actively involved in a fast-start failover configuration as a primary or standby. It is in a bystander role, meaning that while it is part of a Data Guard configuration, it is neither a target for failover nor actively participating in failover operations. Additionally, FS_FAILOVER_OBSERVER_HOST shows 'cats', which indicates the host where the observer process is expected to run. However, since there is no information about the observer being present, we can infer that although 'cats' is designated for the observer to run, the observer is not currently connected to this database.
Reference
Oracle documentation on Data Guard configurations and the V$DATABASE view which provides information about the fast-start failover status and observer host.

NEW QUESTION # 84
Your Data Guard environment has two remote physical standby databases.
Client applications use the local naming method to connect to the primary database instance.
You want applications to automatically connect to the new primary database instance in case of a switchover or a failover.
Which set of actions will fulfill this requirement?

A. Set DB_NAME and DB_UNIQUE_NAME identically on all databases; modify the connection descriptors on client applications to include all the standby hosts and connect to the database instance using that service name.
B. Set the INSTANCE NAME parameter identically on all databases; modify the connection descriptor on client applications to include all the standby hosts and connect to the database instance using that service name.
C. Set the LOCAL_LISTENER parameter for all the database instance to register services with the default listener on the primary database host.
D. Create a database service on the primary database that is started automatically by a trigger, when the database role is PRIMARY; modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name.

Answer: D

Explanation:
For seamless client redirection in a Data Guard environment, the following steps should be taken:
* Create a database service on the primary database that is started automatically by a trigger when the database role is PRIMARY (B): This ensures that the service is only available on the primary database and is automatically started after a role transition due to switchover or failover.
* Modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name (B): Client applications use the connection descriptors that include all potential primary hosts (i.e., the current primary and all standbys). This enables clients to connect to whichever database is currently acting as the primary using the service name.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 85
Which TWO statements are true for Data Guard environments with multi-tenant databases?

A. The CDBDBA privilege must be used instead of the SYSDBA privilege for connections as SYS to the root container of a multi-tenant standby database.
B. A multi-tenant standby database can have fewer pluggable databases than the primary container database.
C. Different pluggable databases within a logical standby database may have different guard statuses.
D. The Data Guard broker automatically always opens the pluggable databases of a standby database after a role change operation.
E. The Data Guard broker automatically opens all pluggable databases of a primary database after a role change operation.

Answer: B,C

NEW QUESTION # 86
......

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2025 Oracle Trustable 1z0-076: New Oracle Database 19c: Data Guard Administration Real Test

Best 1z0-076 Vce | Valid 1z0-076 Test Syllabus

Oracle Database 19c: Data Guard Administration Sample Questions (Q81-Q86):

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