[Solved] Which of the following is the correct way to acquire locks to prevent deadlocks in PostgreSQL? — Ans: Acquire locks on resources in the same order in all transactions. | PostgreSQL

PostgreSQL - Transactions and Concurrency

Which of the following is the correct way to acquire locks to prevent deadlocks in PostgreSQL?

AAcquire locks on resources in random order.

BAcquire locks on resources in the same order in all transactions.

CNever acquire any locks in transactions.

DAcquire locks only after committing the transaction.

Step-by-Step Solution

Solution:

Step 1: Understand lock acquisition order
Acquiring locks in a consistent order prevents circular waiting.
Step 2: Identify correct practice
All transactions should acquire locks on resources in the same order to avoid deadlocks.
Final Answer:
Acquire locks on resources in the same order in all transactions. -> Option B
Quick Check:
Consistent lock order = no deadlock [OK]

Quick Trick: Always lock resources in the same order [OK]

Common Mistakes:

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Which of the following is the correct way to acquire locks to prevent deadlocks in PostgreSQL?