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Restricting user to login from single host may be sometimes required from security point and other business requirements. We can achieve it through SERVER LEVEL LOGON TRIGGER. ALTER TRIGGER TR_CHECK_LOGIN_TEST_HOST ON ALL SERVER FOR LOGON AS BEGIN DECLARE @HOSTNAME VARCHAR(48) DECLARE @PROGNAME VARCHAR(100) SELECT @HOSTNAME = HOST_NAME FROM SYS.DM_EXEC_SESSIONS WHERE SESSION_ID = @@SPID IF ORIGINAL_LOGIN() … Continue reading
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
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
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
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