更新の1Z0-1194-24試験復習 |最初の試行で簡単に勉強して試験に合格する &高品質Oracle Oracle Cloud Database 2024 Migration Professional

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Oracle Cloud Database 2024 Migration Professional 認定 1Z0-1194-24 試験問題 (Q136-Q141):

質問 # 136
Which Oracle Cloud Infrastructure (OCI) tool provides a comprehensive view of the migration status and allows for migration automation through a unified console?

A. Oracle Cloud Shell
B. OCI Migration Workbench
C. Oracle Cloud Migration Service
D. Oracle GoldenGate Hub

正解：C

解説：
Oracle Cloud Migration Service provides a unified console for monitoring and automating the migration of databases, offering insights into migration status and performance.

質問 # 137
Which of the following considerations when choosing a target database option in OCI is MOST crucial to ensure successful migration and data integrity?

A. The target database character set needs to be compatible with the source data.
B. The target database version must be the same as the source database version.
C. The target database storage tier (e.g., high performance, balanced) should be optimized.
D. The target database edition (e.g., Standard, Enterprise) must match the source.

正解：A

解説：
Here's why:
Data Integrity: If the character sets are incompatible, there's a high risk of data corruption, loss, or incorrect display.
Encoding: Ensuring compatibility prevents issues related to character encoding, which can lead to data corruption or loss.
Functionality: Incompatibility can affect database functionality and performance, especially for applications that rely on specific character sets.
While the other options are also important, they are less critical for data integrity:
A). The target database version must be the same as the source database version. While version compatibility is generally recommended, it's not always strictly necessary, especially if the source and target versions are close.
B). The target database edition (e.g., Standard, Enterprise) must match the source. The target database edition should be chosen based on the specific needs of the migrated workload. While it's generally recommended to match the source edition, it's not always strictly necessary.
D). The target database storage tier (e.g., high performance, balanced) should be optimized. Storage tier selection is important for performance, but it doesn't directly affect data integrity.

質問 # 138
Which migration strategy is most suitable for a large, mission-critical Oracle Database with high availability requirements and significant daily peak workloads?

A. Logical migration using Data Pump with minimal downtime
B. User interface migration through the Oracle Cloud Infrastructure (OCI) Console
C. Full database backup and restore during a scheduled downtime window
D. GoldenGate for continuous availability with minimal performance impact

正解：D

解説：
Here's why:
Continuous availability: GoldenGate provides near-real-time data replication, ensuring that the source database remains online and accessible to users throughout the migration process.
Minimal performance impact: GoldenGate is designed to have minimal impact on the performance of the source database, even during peak workloads.
Large databases: It can handle large databases with complex schemas and high data volumes.
High availability: GoldenGate can be configured to provide high availability by maintaining a standby database that can take over if the primary database fails.
The other options have limitations:
a) Full database backup and restore during a scheduled downtime window: This method requires significant downtime, which may not be feasible for mission-critical databases with high availability requirements.
b) Logical migration using Data Pump with minimal downtime: While Data Pump can be used with minimal downtime techniques, it may not be as efficient or suitable for large databases with high transaction volumes.
d) User interface migration through the Oracle Cloud Infrastructure (OCI) Console: This method is typically used for smaller databases or for specific components, not for large-scale migrations of mission-critical databases.

質問 # 139
What is the most appropriate action to resolve an error indicating that the target database already exists during a migration to OCI using source backups?

A. Drop the existing target database and retry the migration.
B. Rename the existing target database and continue the migration.
C. Use the RMAN convert command to convert the existing target database.
D. Use the RMAN duplicate command to create a new target database.

正解：A

解説：
Here's why:
Clear path: Dropping the existing target database ensures a clean slate for the migration and prevents any conflicts or inconsistencies.
Efficiency: This approach is straightforward and avoids unnecessary steps or complexities.
Control: By dropping the existing database, you have full control over the target environment and can ensure that it is properly configured for the migration.
The other options are not recommended:
B). Rename the existing target database and continue the migration. This might lead to confusion and potential issues if the existing database is still used for other purposes.
C). Use the RMAN duplicate command to create a new target database. This is not necessary as you can simply drop the existing database and create a new one.
D). Use the RMAN convert command to convert the existing target database. This is not applicable in this case, as the existing database is not a source database but rather a target database.

質問 # 140
When configuring ZDM with Oracle Data Guard for a large database, which Data Guard configuration option is most relevant to optimize redo apply performance on the standby database?

A. Configuring multiple redo apply servers on the standby database for parallel processing.
B. Configuring the standby database to use a smaller block size compared to the primary.
C. Utilizing automatic redo apply gaps resolution for faster catchup after synchronization.
D. Enabling FastStart Failover on the standby database to minimize failover time.

正解：A

解説：
Here's a breakdown of why:
Parallel redo apply: Using multiple redo apply servers allows the standby database to process redo logs in parallel, significantly improving redo apply performance. This is especially beneficial for large databases with high transaction volumes.
The other options are less relevant to optimizing redo apply performance:
A). Block size is primarily related to storage efficiency and database performance. It doesn't directly impact redo apply performance.
B). FastStart Failover is more relevant to minimizing downtime during a failover event. While it can indirectly improve performance by reducing the time the standby database is unavailable, it doesn't directly optimize redo apply performance.
C). Automatic redo apply gaps resolution is useful for handling situations where redo logs are missing or corrupted. While it can help with recovery, it doesn't directly improve redo apply performance.

質問 # 141
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