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DBMS

Deadlock in DBMS

DBMS 285 views Nov 14, 2025 1 min read

What is Deadlock?

A deadlock occurs when two or more transactions wait for each other indefinitely.

Deadlock Conditions

  • Mutual exclusion
  • Hold and wait
  • No preemption
  • Circular wait

Deadlock Handling Techniques

  • Deadlock Prevention: Prevent circular wait
  • Deadlock Avoidance: Using Banker’s algorithm
  • Deadlock Detection: Wait-for graph
  • Deadlock Recovery: Rollback or kill process
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