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Free Oracle 1Z0-078 Exam Braindumps (page: 3)

Page 3 of 20
PDF with 98 Questions

Which statement describes the usage of Dynamic Service Fallback in Oracle RAC 19c?

  1. Dynamic Service Fallback allows a service to relocate to an available instance when the service is stopped on a preferred instance.
  2. Dynamic Service Fallback allows a service to fall back to a preferred instance when the available instance performance falls below a specified threshold after it was failed over to an available instance.
  3. To enable Dynamic Service Fallback, you should specify the level of performance of a preferred instance for a service to be relocated to an available instance by setting the -fallback attribute of a service to "Low, Medium, or High".
  4. Dynamic Service Fallback allows a service to fall back to a preferred instance when it becomes available after it was failed over to an available instance.

Answer(s): D

Explanation:

Dynamic Service Fallback allows a service to fall back to a preferred instance when it becomes available after it was failed over to an available instance. This is true because Dynamic Service Fallback is a new feature in Oracle RAC 19c that enables a dynamic database service to automatically relocate to a preferred instance when it is restored, after the service was failed over to an available instance due to the failure of the last preferred instance. This feature improves the availability and performance of the service by minimizing the manual intervention and the number of failovers. To enable Dynamic Service Fallback, you should specify the -failback option for the service as YES when using SRVCTL or DBCA12.


Reference:

Oracle Database 19c Release 19.3 New Features, Dynamic Services Fallback Option1 : Automatic Failback of a Service in a Oracle-19c-RAC-Database2



Which three statements are true about ASM Cloud File System (ACFS) encryption? (Choose three.)

  1. A copy of an encrypted file is not encrypted unless it is created in an encrypted directory.
  2. An ACFS snapshot can be ACFS encrypted.
  3. acfsutil encr off can be run by an encryption manager who may not have system administrator privileges.
  4. acfsucil encr on can be used to specify the encryption key length for a directory or file.
  5. acfsutil encr inic is used to establish role separation between encryption managers and encryption auditors.

Answer(s): B,D,E



For which three entities can the "what-if" command evaluation be used to determine the impact of clusterware management operations in Oracle 19c Clusterware? (Choose three.)

  1. Cluster resources
  2. Database transactions
  3. Local resources
  4. Administrator-defined resources
  5. Pluggable Databases (PDBs)

Answer(s): A,C,D



Which two statements are true about the Global Enqueue Service, Instance Locks, and global enqueues in Oracle 19c RAC? (Choose two.)

  1. Global Enqueues and Instance Locks replace mutexes completely in RAC database instances.
  2. Global Enqueues may have converters and waiters in the same instance.
  3. Global Enqueues may have owners and waiters in the same instance.
  4. Global Enqueues and Instance Locks replace latches completely in RAC database instances.
  5. In a RAC database, there is no LMDO process if only one instance is running.
  6. In a RAC One Node database, there is no LMD) process if only one instance is running.

Answer(s): C,E



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