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The point of auto-scale is provide additional CPU capability. And Why the system needs more CPU ? to allow for more concurrent processes to run.
So A is false because the number of CPUs changed and are displayed.
and E is false because the point of the incresed CPU is to allow more processes to run, thus more concurrency, which is not the same as higher Level of parallelism. concurrency is more independent processes. Parallelism is on slaves running the same query.
The optimizer still keeps the same parameter setting for parallel
Answer = BCE
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/autonomous-auto-scale.html#GUID-27FAB1C1-B09F-4A7A-9FB9-5CB8110F7141
Enabling auto scaling does not change the concurrency and parallelism settings for the predefined services.
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/monitor-performance-intro.html#GUID-54CCC1C6-C32E-47F4-8EB6-64CD6EDB5938
Read the CPU section.
With auto scaling enabled the database can use up to three times more CPU and IO resources than specified by the number of OCPUs currently shown in the Scale Up/Down
BCE do not change
BCE are correct, because the amount of storage (B) does not depend on auto-scaling.
AD are incorrect because the the number of OCPU displayed (A) may change if this is the number displayed in the Monitoring page.
Just for reference, the specified answers (ACE) are correct, more information at:
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/autonomous-auto-scale.html#GUID-27FAB1C1-B09F-4A7A-9FB9-5CB8110F7141
Quote:
Enabling auto scaling does not change the concurrency and parallelism settings for the predefined services
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