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Exam 1z0-052 topic 3 question 130 discussion

Actual exam question from Oracle's 1z0-052
Question #: 130
Topic #: 3
[All 1z0-052 Questions]

Which four are true about transaction, table, and row locks in an Oracle Database? (Choose four.)

  • A. Transaction locks are released when that transaction executes a COMMIT statement
  • B. DML statements lock modified tables in exclusive mode
  • C. Transaction locks are released when that transaction executes a ROLLBACK statement
  • D. DDL statements never lock the objects that they modify
  • E. A table’s row-level locks escalate to table locks when a majority of rows in that table are locked in exclusive mode
  • F. SELECT statements are never blocked by row-level locks
  • G. DML statements lock modified rows in exclusive mode
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Suggested Answer: BCFG 🗳️
by giovi411 at June 20, 2019, 8:04 a.m.

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giovi411
5 years, 5 months ago
Transaction locks are released when that transaction executes a COMMIT statement + Transaction locks are released when that transaction executes a ROLLBACK statement + DML statements lock modified rows in exclusive mode + SELECT statements are never blocked by row-level locks
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