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Category: SQL Server 2011 (Denali)

  • How to make Lite Speed Central database and Local repository in sync?

    If you have configured the LiteSpeed in your environment using the Lite Speed Central repository option, there will be a scenario when Lite Speed Central repository misses some data. To make the data available in central repository you can use the LiteSpeed local database and execute the below procedure to ensure that cenral repository comes in sync with the local repository.

    exec dbo.xp_replicate_activity_statistics

  • Permission required for SP_UpdateStats

    To update the statistics on the database you should either be DBO of that database or SysAdmin on SQL instance.
    SPUpdateStats

    If you want to grant the least permission instead of server level permission you make the user DBO of the database. You can do it from database properties windows as below.

    DBO

    You can also make the user DBO using below command.

    USE [My_Policy]
    GO
    EXEC dbo.sp_changedbowner @loginame = N’jugal’, @map = false
    GO

  • ORIGINAL_LOGIN() and SUSER_SNAME() functions

    ORIGINAL_LOGIN() function returns the name of the original login that connected to the instance of SQL Server and is used to identify original login in all sessions. Even though you will do the security context switch it will return the original login name.

    SUSER_SNAME returns the name of user in the current security context. 

    --connect SQL Using LoginDEMO account
SELECT ORIGINAL_LOGIN() Original_Login_func, SUSER_SNAME() Suser_Name_Login_Func

--Executing query using LoginTest account
execute as login = 'LoginTest'
SELECT ORIGINAL_LOGIN() Original_Login_func, SUSER_SNAME() Suser_Name_Login_Func
revert

--Again executing query be reverting the change
SELECT ORIGINAL_LOGIN() Original_Login_func, SUSER_SNAME() Suser_Name_Login_Func

    Check below output image for more information. I connected SQL Server using LoginDemo account.
    New

  • Script to get the Last Backup Date of database full and t-log backup

    To get the max backup date of the database or to check whether database is backed up or not. You can execute below script to check the last backup date.

    SELECT   d.name,
         MAX(b.backup_finish_date) AS backupfinishdate
FROM     master.sys.sysdatabases d
         LEFT OUTER JOIN msdb..backupset b
         ON       b.database_name = d.name
         AND      b.type          = 'D'
GROUP BY d.name
ORDER BY backup_finish_date DESC


SELECT   d.name,
         MAX(b.backup_finish_date) AS backupfinishdate
FROM     master.sys.sysdatabases d
         LEFT OUTER JOIN msdb..backupset b
         ON       b.database_name = d.name
         AND      b.type          = 'L'
GROUP BY d.name
ORDER BY backup_finish_date DESC

  • Script to get the database backup history

    For the point time recovery or in case of failure it is essential that you should have the backup history of the database. You can execute the below query against the database to get the backup history.

    SELECT  
   CONVERT(CHAR(100), SERVERPROPERTY('Servername')) AS Server, 
   msdb.dbo.backupset.database_name,  
   msdb.dbo.backupset.backup_start_date,  
   msdb.dbo.backupset.backup_finish_date, 
   msdb.dbo.backupset.expiration_date, 
   CASE msdb..backupset.type  
       WHEN 'D' THEN 'Database'  
       WHEN 'L' THEN 'Log'  
   END AS backup_type,  
   msdb.dbo.backupmediafamily.logical_device_name,  
   msdb.dbo.backupmediafamily.physical_device_name,   
   msdb.dbo.backupset.name AS backupset_name, 
   msdb.dbo.backupset.description 
FROM   msdb.dbo.backupmediafamily  
   INNER JOIN msdb.dbo.backupset ON msdb.dbo.backupmediafamily.media_set_id = msdb.dbo.backupset.media_set_id 
WHERE 
(CONVERT(datetime, msdb.dbo.backupset.backup_start_date, 102) >= '2013-01-08 00:04:49.000')  and (CONVERT(datetime, msdb.dbo.backupset.backup_start_date, 102) <= '2013-01-08 23:59:59')  
and  msdb.dbo.backupset.database_name = 'Mention the database name'
ORDER BY  
   msdb.dbo.backupset.backup_finish_date desc