How to Capture deadlock in SQL server | Trace deadlock | SQL interview Q&A | Ms SQL
This video focus on how to capture a deadlock in SQL server. If you are a beginner then this video is for you. Please refer below video reference links that are discussed in this video.
What is a deadlock and how it occurs
• What is a Deadlock in SQL Server | How a d...
How SQL server choses a deadlock victim
• How SQL server choose a Deadlock Victim | ...
T-SQL script to find How many deadlock occured since server startup
SELECT 'Deadlocks Occurrence',
CONVERT(BIGINT,((1.0 * v.cntr_value /
NULLIF(datediff(DD,w.create_date,CURRENT_TIMESTAMP),0)))) as
AvgPerDay,
CAST(v.cntr_value AS NVARCHAR(100)) + ' deadlocks recorded since startup.' AS Details,
w.create_date as StartupDateAndTime
FROM sys.dm_os_performance_counters v
INNER JOIN sys.databases w ON w.name = 'tempdb'
WHERE RTRIM(v.counter_name) = 'Number of Deadlocks/sec'
AND RTRIM(v.instance_name) = '_Total'
Turn on Trace flags
DBCC TRACEON (1204, -1)
DBCC TRACEON (1222, -1)
Analyzing Deadlocks with SQL Server Profiler
https://learn.microsoft.com/en-us/pre...)
Microsoft technet on System health extended event
https://social.technet.microsoft.com/...
Analyze & prevent deadlocks
a. https://learn.microsoft.com/en-us/sql...
b. https://learn.microsoft.com/en-us/azu...
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