WEB-BASED PRACTICE EXAMS TO EVALUATE 1Z1-076 ORACLE DATABASE 19C: DATA GUARD ADMINISTRATION EXAM PREPARATION

Web-Based Practice Exams to Evaluate 1z1-076 Oracle Database 19c: Data Guard Administration Exam Preparation

Web-Based Practice Exams to Evaluate 1z1-076 Oracle Database 19c: Data Guard Administration Exam Preparation

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Oracle Database 19c: Data Guard Administration Sample Questions (Q39-Q44):

NEW QUESTION # 39
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: Max Availability
Databases:
dogs - Primary database sheep
- Physical standby database cats
- Physical standby database
Fast-Start Failover: DISABLED
Configuration Status: SUCCESS
An attempt to enable fast-start failover raises an error:
DGMGRL> enable fast_start failover;
Error: ORA-16693: requirements not met for enabling fast-start failover Failed.
Identify three possible reasons for this error.

  • A. The LogXptMode property is set to fastsync on Dogs.
  • B. The LogXptMode property is set to async on Dogs.
  • C. The LogXptMode property is set to FASTSYNC on Cats while Sheep is the target standby database.
  • D. The LogxptModr property is set to async on Sheep while Sheep is the target standby database.
  • E. The fastStartFailoverTarget property is not set on Dogs.

Answer: B,D,E

Explanation:
When enabling fast-start failover, certain conditions must be met:
The fastStartFailoverTarget property is not set on Dogs (A): The primary database (Dogs) needs to have a fast-start failover target configured for the operation to succeed.
The LogXptMode property is set to ASYNC on Sheep while Sheep is the target standby database (B): Fast-start failover requires synchronous redo transport (SYNC or FASTSYNC) to ensure zero data loss, which is a prerequisite for enabling the feature.
The LogXptMode property is set to ASYNC on Dogs (D): Similar to the previous point, the primary database must be configured to use synchronous redo transport for the fast-start failover to be possible.
Reference:
Oracle Data Guard Broker documentation
Oracle Database Error Messages Guide


NEW QUESTION # 40
Which three are prerequisites for enabling Fast-Start Failover?

  • A. The maximum protection mode can be used, but with two or more standby databases.
  • B. Flashback Database must be enabled only on the Fast-Start Failover target standby database.
  • C. The Data Guard environment must be managed by the Data Guard Broker.
  • D. You can specify only one standby database as the fast-start failover target.
  • E. The configuration must be operating in either Maximum Performance or Maximum Protection mode.
  • F. Flashback Database must be enabled on both the primary database and the Fast-Start Failover target standby database.

Answer: C,D,F

Explanation:
To enable Fast-Start Failover in a Data Guard environment, the following conditions must be in place:
* The Data Guard environment must be managed by the Data Guard Broker (A): The Broker simplifies management tasks and is required to enable fast-start failover, which is an automatic failover mechanism provided by Data Guard.
* You can specify only one standby database as the fast-start failover target (C): Fast-start failover is designed to fail over to a single, predetermined standby database, known as the target standby.
* Flashback Database must be enabled on both the primary database and the Fast-Start Failover target standby database (F): Flashback Database provides a quick way to revert a database to a point
* in time before a logical or physical corruption or error occurred. It must be enabled on both the primary and target standby databases to allow for the possibility of reinstating the old primary as a standby after a failover.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database High Availability Overview


NEW QUESTION # 41
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 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.
  • B. 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.
  • C. 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.
  • D. Set the LOCAL_LISTENER parameter for all the database instance to register services with the default listener on the primary database host.

Answer: C

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 # 42
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxAvailability
Databases:
dogs - Primary database
sheep - Snapshot standby database
cats - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
You receive an error while attempting to raise the protection mode to Maximum Protection:
DGMGRL> edit configuration set protection mode as maxprotection;
Error: ORA-16627: operation disallowed since no standby databases would remain to support protection mode Failed.
Which is the minimum statement, or sequence of statements you must execute to enable successful raising of the protection mode to Maximum Protection?

  • A. DGMGRL> edit database dogs set property LogxptMode=sync;
    DGMGRL> edit database sheep set property LogxptMode=sync;
  • B. DGMGRL> edit database dogs set property LogxptMode=sync;
  • C. DGMGRL> edit database sheep set property LogXptMode=sync;
  • D. DGMGRL> edit database cats set property LogXptMode=sync;
  • E. DGMGRL> edit database dogs set property LogXptMode=sync;
    DGMGRL> edit database cats set property LogXptMode=sync;
  • F. DGMGRL> edit database dogs set property LogXptMode=sync;
    DGMGRL> edit database sheep set property LogxptMode=sync;
    DGMGRL> edit database cats set property LogXptMode=sync;

Answer: E


NEW QUESTION # 43
Which three statements are true about snapshot standby databases?

  • A. A logical standby database can be converted into a snapshot standby database.
  • B. The FATLOVER TO command results in a transition of a snapshot standby database to the primary role.
  • C. Tablespaces can be dropped.
  • D. The switchover TO command allows a switchover operation to a snapshot standby database.
  • E. Tablespaces can be created.
  • F. Tables can be dropped.

Answer: C,E,F

Explanation:
A snapshot standby database is a fully updateable standby database that is created by converting a physical standby database into a snapshot standby database. The main characteristics of a snapshot standby database include:
* B: Tablespaces can indeed be dropped in a snapshot standby database because it is updateable and allows all types of DML and DDL operations that do not conflict with the standby role.
* C: Tablespaces can be created in a snapshot standby database for the same reasons that they can be
* dropped; it supports all operations that do not interfere with its standby nature.
* E: Tables can be dropped in a snapshot standby database, as it is a fully updateable standby.
Options A and D are incorrect because 'FAILOVER TO' and 'SWITCHOVER TO' commands are not used with snapshot standby databases in these contexts. A failover converts a standby database into the primary role after the original primary has become unavailable, and is not a reversible role transition. Switchover is a planned role reversal between the primary database and one of its standby databases and is not applicable to snapshot standby databases in the context provided.
Option F is incorrect because a logical standby database cannot be converted into a snapshot standby database directly. A logical standby is used for different purposes such as reporting and querying with real-time data, and its structure is different from a physical standby which can be converted into a snapshot standby.
References: Oracle Data Guard Concepts and Administration guide details the operations allowed on snapshot standby databases and the processes for transitioning between physical, snapshot, and logical standby databases.


NEW QUESTION # 44
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