Find Isolation Level of transaction and Database

Find Isolation level of a transaction

SELECT  session_id AS SessionID, 
  program_name AS ProgramName,
  DB_NAME(database_id) AS DatabaseName, 
  CASE transaction_isolation_level 
   WHEN 0 THEN 'Unspecified' 
   WHEN 1 THEN 'ReadUncommitted' 
   WHEN 2 THEN 'ReadCommitted' 
   WHEN 3 THEN 'Repeatable' 
   WHEN 4 THEN 'Serializable' 
   WHEN 5 THEN 'Snapshot' 
  END AS Transaction_Isolation_Level
FROM sys.dm_exec_sessions

Changing the Transaction Isolation level
Using the below statement the isolation level of a transaction can be changed.

Isolation Level

• Read uncommitted
• Read committed
• Repeatable read
• Serializable
• Read committed snapshot
• Snapshot

SET TRANSACTION ISOLATION LEVEL <<Isolation Level>>

Find Isolation level of a Database

USE <<Database Name>>
GO
DECLARE @UserOptions TABLE ([Set Option] NVARCHAR(50), [Value] NVARCHAR(50))
INSERT INTO @UserOptions Execute ('DBCC USEROPTIONS')
SELECT * FROM @UserOptions WHERE [Set Option] = 'isolation level'

You can download the script from here.

T-SQL to List all Permissions for a Given Role

This script lists all the permissions for a given role.

SELECT DB_NAME() AS DatabaseName
      ,DatabasePrincipals.name AS PrincipalName
      ,DatabasePrincipals.type_desc AS PrincipalType
      ,DatabasePrincipals2.name AS GrantedBy
      ,DatabasePermissions.permission_name AS Permission
      ,DatabasePermissions.state_desc AS StateDescription
      ,SCHEMA_NAME(SO.schema_id) AS SchemaName
      ,SO.Name AS ObjectName
      ,SO.type_desc AS ObjectType
  FROM sys.database_permissions DatabasePermissions LEFT JOIN sys.objects SO
    ON DatabasePermissions.major_id = so.object_id LEFT JOIN sys.database_principals DatabasePrincipals
    ON DatabasePermissions.grantee_principal_id = DatabasePrincipals.principal_id LEFT JOIN sys.database_principals DatabasePrincipals2
    ON DatabasePermissions.grantor_principal_id = DatabasePrincipals2.principal_id
WHERE DatabasePrincipals.name = 'Test' -- Change the Role Name

You can download the script from here.

T-SQL to get Get Database Files Usage information

Here is an handy T-SQL script to get Database files usage Information

DECLARE @FreeSpaceThreshold int
SET @FreeSpaceThreshold = 20 -- Change this Threshold Value. Any number between 0 to 100

CREATE TABLE #GetDetails
( 
 ServerName nvarchar(100),
 DatabaseName nvarchar(100),
 LogicalFileName nvarchar(100),
 FileType nvarchar(10),
 FileLocation nvarchar(max),
 [FileSize(MB)] decimal (15,2),
 [UsedSpace(MB)] decimal (15,2),
 [FreeSpace(MB)] decimal (15,2),
 [UsedSpace(%)] decimal (15,2),
 [FreeSpace(%)] decimal (15,2)
 )

EXEC sp_MSforeachdb 'Use [?];
INSERT INTO #GetDetails
SELECT @@SERVERNAME AS ServerName,
    DB_NAME() AS DatabaseName,
    name AS LogicalFileName, 
    type_desc AS FileType, 
    physical_name AS FileLocation,
    CAST(size/128.0 AS decimal(15,2)) AS [FileSize(MB)],
    CAST(FILEPROPERTY(name, ''SpaceUsed'')/128.0 AS decimal(15,2)) AS [UsedSpace(MB)],
    CAST(size/128.0 AS decimal(15,2)) - CAST(FILEPROPERTY(name, ''SpaceUsed'')/128.0 AS decimal(15,2)) AS [FreeSpace(MB)],
    CAST(((FILEPROPERTY(name, ''SpaceUsed'')/128.0 ) /  (size/128.0))*100 AS decimal(15,2)) AS [UsedSpace(%)],
    CAST((((size/128.0) - FILEPROPERTY(name, ''SpaceUsed'')/128.0 ) /  (size/128.0))*100 AS decimal(15,2)) AS [FreeSpace(%)]
FROM sys.database_files'

SELECT * FROM #GetDetails Where [FreeSpace(%)] < @FreeSpaceThreshold
DROP TABLE #GetDetails

Download this script from https://gallery.technet.microsoft.com/T-SQL-to-Get-Database-f16f60c7?redir=0

Power BI Architecture for Enterprises

T-SQL script to get Backup Details of a Database and the Sequence it was taken

Here is an handy script which give the details of the list of backup(s) taken of a database and the sequence it was taken.

DECLARE @db_name VARCHAR(100)
SELECT @db_name = '<DB Name>'

SELECT 
 BS.server_name AS [Server Name]
,BS.database_name AS [Database Name]
,BS.recovery_model AS [Recovery Model]
,BMF.physical_device_name [Location]
,(CAST(BS.backup_size / 1000000 AS INT)) AS [Size of Backup (MB)]
,CASE BS.[type] WHEN 'D' THEN 'Full'
  WHEN 'I' THEN 'Differential'
  WHEN 'L' THEN 'Transaction Log'
  END AS [Type of Backup]
,BS.backup_start_date AS [Backup Date]
,BS.first_lsn AS [First LSN]
,BS.last_lsn AS [Last LSN]
FROM msdb.dbo.backupset BS
INNER JOIN msdb.dbo.backupmediafamily BMF ON BS.media_set_id = BMF.media_set_id
WHERE BS.database_name = @db_name
ORDER BY backup_start_date DESC , backup_finish_date

Download the script from https://gallery.technet.microsoft.com/T-SQL-script-to-get-Backup-5a9b029b?redir=0