Oracle Exam 1Z0-1093-25 Topic 3 Question 2 Discussion

Actual exam question for Oracle's 1Z0-1093-25 exam

Question #: 2
Topic #: 3

Which of the following is the recommended approach for migrating a large, mission-critical database from an on-premises Exadata system to Exadata Database Service with minimal downtime?

ATraditional export/import using Data Pump over a public network.

BCreating a physical standby database using Data Guard and switching over to the standby in OCI.

CPerforming a full backup and restore to a new Exadata Database Service instance.

DUsing SQL Developer to copy the data over a VPN connection.

Show Suggested Answer

Suggested Answer: B

B . Using Data Guard for physical standby and switchover:

This method enables minimal downtime migration.

Steps:

Configure Data Guard to synchronize the standby database with the primary on-premises database.

Once synchronized, perform a switchover to make the standby the new primary.

Downtime is limited to the switchover duration.

This approach leverages real-time replication to minimize disruption.

Why the other options are incorrect:

A . Export/Import with Data Pump: Too time-consuming for large databases.

C . Full backup and restore: High downtime due to the time required for data transfer and restoration.

D . Copying via SQL Developer: Not feasible for mission-critical and large databases due to slow transfer speeds.

Oracle Data Guard Documentation: Minimal Downtime Migration

by Elvera at Apr 07, 2025, 01:26 PM

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Susana

1 months ago

Exadata to Exadata? Sounds like a game of database ping-pong. Option B is the clear winner here.

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Tomas

4 days ago

I would go with option B for sure, it's the most reliable method.

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Dierdre

16 days ago

I think option C could also work well if done carefully.

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Rozella

17 days ago

I agree, option B with Data Guard seems like the safest choice.

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Cassie

2 months ago

Option B is the way to go. Data Guard is the industry standard for high-availability database migrations. Plus, it's like having a backup parachute for your mission-critical data.

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Francene

2 days ago

Agreed, having that backup parachute is crucial when dealing with mission-critical data.

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Malinda

23 days ago

That sounds like a solid plan. Data Guard is definitely a reliable option for minimizing downtime.

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Mabel

1 months ago

B) Creating a physical standby database using Data Guard and switching over to the standby in OCI.

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Anissa

2 months ago

Using SQL Developer to copy the data? That's a bit like trying to move a mountain with a toothpick. Option D is a no-go.

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Jennie

2 days ago

C) Performing a full backup and restore to a new Exadata Database Service instance.

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Colton

3 days ago

B) Creating a physical standby database using Data Guard and switching over to the standby in OCI.

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Tuyet

4 days ago

A) Traditional export/import using Data Pump over a public network.

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Cassi

2 months ago

I'm not sure, but I think option C) Performing a full backup and restore might also be a good approach for minimal downtime.

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Cecil

2 months ago

Data Pump over a public network? Yikes, that sounds risky for a mission-critical system. I'd avoid option A.

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Gladys

2 months ago

I agree with Rodney. It makes sense to minimize downtime by using Data Guard for migration.

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Kina

2 months ago

I'd go with option C. A full backup and restore might be the safest bet, even if it takes a bit longer.

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Jerilyn

1 days ago

That's true, having a standby database for failover is always a good idea.

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Coral

2 days ago

I think creating a physical standby database using Data Guard could also be a good option.

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Lashawn

8 days ago

I agree, it may take longer but it's worth it for a mission-critical database.

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Markus

1 months ago

Option C sounds like the most reliable choice.

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Rodney

2 months ago

I think the recommended approach is B) Creating a physical standby database using Data Guard and switching over to the standby in OCI.

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Twana

2 months ago

Option B seems like the way to go. Data Guard is the recommended approach for mission-critical databases.

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Terrilyn

17 days ago

Agreed, using Data Guard for the migration is the way to go.

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Rodolfo

1 months ago

Definitely, minimizing downtime is crucial for mission-critical databases.

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Corrinne

1 months ago

That sounds like a solid plan. Data Guard is known for its reliability.

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Dottie

1 months ago

B) Creating a physical standby database using Data Guard and switching over to the standby in OCI.

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Serita

1 months ago

That could work too, but Data Guard is usually the go-to for minimizing downtime.

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Titus

2 months ago

C) Performing a full backup and restore to a new Exadata Database Service instance.

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Marva

2 months ago

That sounds like a solid plan. Data Guard is known for its reliability.

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Kasandra

2 months ago

B) Creating a physical standby database using Data Guard and switching over to the standby in OCI.

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