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Category Archives: Dynamic Management View
DMV-15 : Pending I/O requests……..sys.dm_io_pending_io_requests
sys.dm_io_pending_io_requests DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms188762.aspx Returns a row for each pending I/O request in SQL Server. It’s a very simple DMV used to see all pending I/O requests & there description. You can combine this DMV with DMF – sys.dm_io_virtual_file_stats to see I/O pending requests with database files. You … Continue reading
DMV-14 : Which Table has Max. rows & Size……..sys.dm_db_partition_stats
sys.dm_db_partition_stats DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms187737.aspx Returns page and row-count information for every partition in the current database. This DMV gives useful information about rowcount, free & reserved space of each table in database. It can be used for analysis purpose while adding new indexes, doing index Maintenance or checking … Continue reading
DMV-13 : Finding locking & blocking……..sys.dm_tran_locks
sys.dm_tran_locks DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms190345.aspx Returns information about currently active lock manager resources. Each row represents a currently active request to the lock manager for a lock that has been granted or is waiting to be granted. The columns in the result set are divided into two main groups: … Continue reading
DMV-12 : Retaion in Session & Transaction……..sys.dm_tran_session_transactions
sys.dm_tran_session_transactions DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms188739.aspx Returns correlation information for associated transactions and sessions. This DMV helps in correlating the relation between session & transaction. We can get several details about transaction by correcting it will other DMVs & system catalogs. Query 1 : Query to check Transaction & Session … Continue reading
DMV-11 : T-Log space used by transaction……..sys.dm_tran_database_transactions
sys.dm_tran_database_transactions DMV (Dynamic Management View), described by BOL as follows: http://msdn.microsoft.com/en-us/library/ms186957.aspx Returns information about transactions at the database level. Some time , T-log space is hugely consumed by database & we are not aware that which transaction is culprit for this. This is useful DMV in such conditions to check T-log space used by each … Continue reading