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Exam 1z0-078 topic 1 question 54 discussion

Actual exam question from Oracle's 1z0-078
Question #: 54
Topic #: 1
[All 1z0-078 Questions]

Which statement describes the purpose of colocation_tag for client routing with Oracle database 19c?

  • A. When possible, clients with the same colocation_tag are routed to the same instance that offers a given service.
  • B. When possible, clients with the same colocation_tag are routed to the same available instance even if a preferred instance is available.
  • C. When possible, clients with the same colocation_tag could be routed across a set of preferred instances based on a specific load balancing option.
  • D. When possible, clients with the same colocation_tag are routed to the same available instance when a preferred instance is not available.
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Suggested Answer: A 🗳️
by Tunglinfo9 at Jan. 16, 2025, 3:26 p.m.

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Tunglinfo9
3 months ago
Selected Answer: A
In summary, the colocation_tag attribute is used to provide a hint to the listener to route clients with the same tag to the same instance in an Oracle RAC environment. This is done to improve data locality and reduce inter-instance communication by grouping clients that are likely to access the same data.
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