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You are troubleshooting an application that runs a query. The application frequently causes deadlocks. You need to identify the isolation level used by the query when a deadlock occurs. What should you do? More than one answer choice may achieve the goal. Select the BEST answer.
Correct Answer: C
Explanation/Reference: Explanation: - sys.dm_exec_sessions Returns one row per authenticated session on SQL Server. sys.dm_exec_sessions is a serverscope view that shows information about all active user connections and internal tasks. Include the column: transaction_isolation_level smallint Transaction isolation level of the session. 0 = Unspecified 1 = ReadUncomitted 2 = ReadCommitted 3 = Repeatable 4 = Serializable 5 = Snapshot Is not nullable.