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Exam 1z0-078 topic 1 question 78 discussion

Actual exam question from Oracle's 1z0-078
Question #: 78
Topic #: 1
[All 1z0-078 Questions]

Which two statements are true about Instance Locks in Oracle 19c RAC? (Choose two.)

  • A. They are used to coordinate access across multiple library caches for the same stored procedure.
  • B. They are used to coordinate access across multiple library caches for anonymous PL/SQL execution.
  • C. They are used to coordinate the next value for a sequence created with the CACHE and ORDER clauses.
  • D. They are used when an application uses the DBMS_LOCK package for UL lock types.
  • E. They are used to coordinate the next value for a sequence created with the NOCACHE and NOORDER clauses.
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Suggested Answer: AD 🗳️

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Tunglinfo9
2 months, 4 weeks ago
Selected Answer: AD
A. They are used to coordinate access across multiple library caches for the same stored procedure. True In RAC, Instance Locks are used to synchronize access across multiple library caches, ensuring that shared resources like stored procedures are correctly synchronized across instances. D: They are used when an application uses the DBMS_LOCK package for UL lock types. TRUE Instance Locks are utilized when applications use the DBMS_LOCK package for user-defined locks (UL), allowing coordination and synchronization among different instances in an Oracle RAC environment.
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217972f
5 months, 2 weeks ago
Selected Answer: CD
C. Instance locks are used to coordinate the generation of sequence numbers when a sequence is created with the CACHE and ORDER clauses to ensure consistency across multiple instances in a RAC environment. D. The DBMS_LOCK package can be used to create user-defined locks (UL locks), and these locks are managed as instance locks in a RAC environment to ensure synchronization.
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