How deadlock is a performance problem and some techniques to correct deadlocks?

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1. How deadlock is a performance problem and some techniques to correct deadlocks?

Majorly Deadlocks are Database Design problem but they are a performance problem as well because they can prevent 2 or more processes from being able to process data. A deadlock chain can occur and impact hundreds of spids based on the data access patterns, number of users, object dependencies, etc. Deadlocks could require a database design change, T-SQL coding change to access the objects in the same order, separating reporting and OLTP applications, including NOLOCK statements in SELECT queries that can accept dirty data, etc.

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Interview Questions

1. How deadlock is a performance problem and some techniques to correct deadlocks?

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