Oracle Fusion Middleware 12c: Oracle Service Bus Essentials — Question 15

Examine these commands:
1. Execute "crsctl stop cluster -all" as the grid user from one database server.
2. Execute "crsctl stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crsctl stop cluster" as root from one database server.
5. Execute "crsctl stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?

Answer options

• A. 4, 7, 8, 3, and 6
• B. 2, 7, 8, and 6
• C. 1, 8, 7, 3 and 6
• D. 2, 8, 7, 3, and 6
• E. 5, 8, 7, and 6

Correct answer: D

Explanation

The correct answer is D because it starts with stopping the cluster as root, which ensures that the cluster services are safely halted. Following this, shutting down the Exadata storage servers ensures that data integrity is maintained before powering off the network switches and rack. The other options do not follow this safe shutdown sequence, which could lead to potential data loss or corruption.