784. Inspect InnoDB locks — concurrency case 1

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

Write or choose the MySQL approach that reduces race conditions, lock waits or deadlocks in this scenario.

Looking for the latest Sarkari Result 2026 updates? Check the latest government exam results, merit lists and result updates on Sarkari Resultess.

Answer & Explanation

4 Answers

Verified

Option A

Keep a transaction open while doing network calls.

Additional Explanation

This option is incorrect for the stated requirement.

Verified

Option B

Use SELECT without a transaction for a critical read-modify-write sequence.

Additional Explanation

This option is incorrect for the stated requirement.

Verified

Option C

Lock rows in random order in each worker.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option D

SELECT * FROM performance_schema.data_locks;

Additional Explanation

Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.