ORACLE CERTIFICATION 1Z1-076 EXAM TEST SOFTWARE

Oracle certification 1z1-076 exam test software

Oracle certification 1z1-076 exam test software

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First-hand Oracle 1z1-076 Test Pdf: Oracle Database 19c: Data Guard Administration & 1z1-076 Exam Training

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Oracle Database 19c: Data Guard Administration Sample Questions (Q13-Q18):

NEW QUESTION # 13
Examine this list of possible steps:
1. Raise the compatibility level on both databases.
2. Restart SQL Apply on the upgraded logical standby database.
3. Start SQL Apply on the old primary database.
4. Perform a Switchover to the logical standby database.
5. Upgrade the logical standby database.
6. Upgrade the old primary database.
Which is the minimum number of steps in the correct order, to perform a rolling release upgrade of a data guard environment using an existing logical standby database and to enable the new functionality?

  • A. 5,2,4,3,6,1
  • B. 5,2,4,6,3,1
  • C. 1,5,2,4,6,3
  • D. 4,6,5,2,3,1
  • E. 5,2,4,1

Answer: C

Explanation:
The process of performing a rolling release upgrade in a Data Guard environment using a logical standby database generally involves these steps:
Raise the compatibility level on both databases (1): Ensuring both the primary and logical standby databases are operating with the same and correct compatibility level is essential before starting the upgrade process.
Upgrade the logical standby database (5): Apply the database upgrade to the logical standby first, which allows the primary database to continue serving the workload without interruption.
Restart SQL Apply on the upgraded logical standby database (2): Once the logical standby has been upgraded, SQL Apply must be restarted to apply the redo data from the primary database, which is still running the earlier version.
Perform a switchover to the logical standby database (4): After confirming that the logical standby database is successfully applying redo data, perform a switchover to make it the new primary database.
Upgrade the old primary database (6): With the new primary database now in place, upgrade the old primary database (which is now the new standby) to the new Oracle Database release.
Start SQL Apply on the old primary database (3): Finally, start SQL Apply on what is now the standby database to synchronize it with the new primary database.
Reference:
Oracle Data Guard Concepts and Administration Guide
Oracle Database Upgrade Guide


NEW QUESTION # 14
Which TWO statements are true for Data Guard environments with multi-tenant databases?

  • A. The Data Guard broker automatically opens all pluggable databases of a primary database after a role change operation.
  • B. The Data Guard broker automatically always opens the pluggable databases of a standby database after a role change operation.
  • C. 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.
  • D. Different pluggable databases within a logical standby database may have different guard statuses.
  • E. A multi-tenant standby database can have fewer pluggable databases than the primary container database.

Answer: D,E


NEW QUESTION # 15
Which THREE statements are TRUE about Global Sequences when connected to a physical standby database with Real-Time Query enabled?

  • A. If the CACHE option is set then the size of the cache must be at least 100.
  • B. Their creation requires that a LOG archive_dest_n parameter be defined in the standby that points back to the primary.
  • C. Their usage will always have a performance impact on the primary database.
  • D. Their usage may have a performance impact on the physical standby database if the CACHE size is too small.
  • E. They must have the NOORDEK and CACHE options set.

Answer: C,D,E

Explanation:
Global Sequences are Oracle sequences that generate unique values across multiple instances in an Oracle RAC or a Data Guard configuration. Regarding their behavior and performance when connected to a physical standby database with Real-Time Query enabled:
A: The usage of Global Sequences can indeed have a performance impact on the primary database due to the need to generate unique values that are consistent across both primary and standby databases.
D: The performance impact on the physical standby database may occur if the CACHE size is too small. This is because the standby database will frequently have to access the primary database to replenish the cache, which can increase the load and potentially lead to performance degradation.
E: Global Sequences should have the NOORDER and CACHE options set. The NOORDER option ensures that sequence numbers are provided without guaranteeing sequence order, thus improving scalability and performance. The CACHE option is used to specify how many sequence values will be held in memory for faster access.
Option B is incorrect as the LOG_ARCHIVE_DEST_n parameter's definition for standbys pointing back to the primary does not directly pertain to the creation of sequences.
Option C is incorrect because there is no requirement that the size of the cache for a sequence must be at least 100. The CACHE size can be set to a different number based on specific use cases or performance considerations.


NEW QUESTION # 16
You must configure on Oracle Data .......
1. A primary database
2. Three Physical Standby Databases
Examine these requirements:
A designated physical standby database should become the primary database automatically whenever the primary database fails.
2. The chosen protection mode should provide the highest level of protection possible without violating the other requirement.
Which redo transport mode and protection mode would you configure to meet these requirements?

  • A. FASTSYNC and Maximum Availability
  • B. FASTSYNC and Maximum Protection
  • C. SYNC and Maximum Protection
  • D. ASYNC and Maximum Performance

Answer: A

Explanation:
To meet the requirements of automatic failover and the highest level of protection without data loss, the combination of FASTSYNC redo transport mode and Maximum Availability protection mode is appropriate.
FASTSYNC ensures that the performance impact on the primary database is minimized while still providing synchronous transport. Maximum Availability protection mode offers the highest level of data protection without compromising the availability of the primary database. In case of a network failure or a standby failure, the primary will not halt, avoiding disruption to the primary database operations.
ReferencesOracle Data Guard Concepts and Administration guide, which details the different protection modes and their respective levels of data protection and impact on database operations.


NEW QUESTION # 17
Examine the procedure that you plan to execute on your logical standby:
SQL> EXECUTE DBMS_LOGSTDBY.SKIP(stmt => 'DML', schema_name => 'HR', object_name => 'EMPLOYEE'); What is a prerequisite for execution of this procedure?

  • A. Change the redo transport mode if necessary to ASYNC.
  • B. Execute the DBMS_LOGSTDBY.APPLY_SET procedure to record errors that might cause SQL Apply to stop.
  • C. Stop redo transport to the logical standby database.
  • D. Stop SQL Apply on the logical standby database.

Answer: D


NEW QUESTION # 18
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