Which two statements are true about changing the shape of a virtual machine (VM) database (DB) system to adapt to changes in performance needs?
(Choose all correct answers)

• A.If the current shape of the VM DB system supports Oracle Real Application Clusters (RAC), then you can only change that shape to another shape that also supports Oracle RAC.
• B.After you provision a VM DB system, you cannot change the shape. You have to provision another VM DB system using a full backup.
• C.The shape of a VM DB system can be changed at any time, with no impact on the amount of storage available to the DB system.
• D.It is possible to change the shape of a VM DB system with a higher number of OCPUs. However, reducing the number of OCPUs is not permitted.
• E.After you provision a VM DB system with a shape that supports Oracle RAC, you can change that shape to another shape that does not support Oracle RAC.

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When configuring connectivity for hosts in the VCN, security lists contain defaults for implementing security rules. Which TWO additional rules are needed for database systems? (Choose all correct answers)

• A.allows SQL*NET traffic from within the VCN
• B.allows Path MTU Discovery fragmentation messages
• C.allows ONS and FAN traffic from within the VCN
• D.allows SSH traffic from anywhere

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You want to scale within Exadata System. Which of the following two statements are true? (Choose all correct answers)

• A.The setting of database parameter CPU_COUNT is affected by modifying the number of enabled OCPU cores.
• B.Modifying the number of enabled OCPU cores does not require database downtime.
• C.Modifying the number of enabled OCPU cores requires database downtime.
• D.The setting of database parameter CPU_COUNT is not affected by modifying the number of enabled OCPU cores.

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Assume that there are no resource limits on your underlying Exadata Cloud@Customer hardware. What is the maximum number of Autonomous container databases that can be created on one Autonomous VM cluster?

• A.4
• B.12
• C.32
• D.5

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