What is blocking and how would you troubleshoot it?

Question Posted / swapna

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What is blocking and how would you troubleshoot it?..

Answer / swapna

Blocking happens when one connection from an application
holds a lock and a second connection requires a conflicting
lock type. This forces the second connection to wait,
blocked on the first.

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What is blocking and how would you troubleshoot it?..

Answer / rajkumar

Blocking happens when one connection from an application
holds a lock and a second connection requires a conflicting
lock type. This forces the second connection to wait,
blocked on the first.

sp_who2 will give the list of blocking sessions. From that
we can find the objects using dbcc command.

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What is blocking and how would you troubleshoot it?..

Answer / harikrishna

Blocks will occur when one processes holds a lock and
second processes requires a conflicting
lock type, then it blocks, check weather the I/O is moving
or not for the blocked processes.
use the below command to know the route block.
select spid,blocked from sysprocesses where blocked>0

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