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How Row versioning impact tempDB ?
Scenario: DBA found that tempdDBdatabase usage is getting high and most of the size is consumed by row versioning. DBA raised the issue with application team running that query. Once Application team close the session, tempDB usage comes normal. Question: Application tea raise concern “How can a select statement on table consume huge amount of … Continue reading
DMV-3 : What is currently going on ?……..sys.dm_exec_requests
sys.dm_exec_requests DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms177648.aspx Returns information about each request that is executing within SQL Server. sys.dm_exec_requests DMV is used to get details of currently running sessions. This DMV help us is getting details like used database, transaction isolation level, open transaction count, status, blocked session, percentage of task … Continue reading
DMV-2 : Explore the secrets of session…… sys.dm_exec_sessions
sys.dm_exec_sessions DMV (Dynamic Management View), delineated by BOL as follows: http://msdn.microsoft.com/en-us/library/ms176013.aspx Returns one row per authenticated session on SQL Server. sys.dm_exec_sessions is a server-scope view that shows information about all active user connections and internal tasks. This information includes client version, client program name, client login time, login user, current session setting, and more. sys.dm_exec_sessions is extremely useful DMV when … Continue reading
DMV-1 : Who All Are connected ? …. sys.dm_exec_connections
The sys.dm_exec_connections DMV (Dynamic Management View) is represented by Books Online (BOL) as follows : http://msdn.microsoft.com/en-us/library/ms181509.aspx Returns information about the connections established to this instance of SQL Server and the details of each connection. sys.dm_exec_connections is the most common DMV used to get connection details. We will get details info regarding every connection like protocol … Continue reading