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What is a deadlock and what is a live lock? How will you go
about resolving deadlocks?
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Answer Posted / swapna
Deadlock is a situation when two processes, each having a
lock on one piece of data, attempt to acquire a lock on the
other's piece. Each process would wait indefinitely for
the other to release the lock, unless one of the user
processes is terminated. SQL Server detects deadlocks and
terminates one user's process.
A livelock is one, where a request for an exclusive lock
is repeatedly denied because a series of overlapping shared
locks keeps interfering. SQL Server detects the situation
after four denials and refuses further shared locks. A
livelock also occurs when read transactions monopolize a
table or page, forcing a write transaction to wait
indefinitely
| Is This Answer Correct ? | 87 Yes | 10 No |
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