Enable Change Data Capture(CDC) on Database

/*--------------------------------
1: Enable CDC ON Database
----------------------------------*/
DECLARE @DBName NVARCHAR(100)
DECLARE @Cdc_Status BIT

SET @DBName='TESTDB' --> Provide your Database Name on which you want to Enable CDC
SET @Cdc_Status=(SELECT is_cdc_enabled
                 FROM   sys.databases
                 WHERE  name = @DBName)

IF @Cdc_Status = 1
  PRINT ' CDC is already enabled on Database:: '
        + @DBName

IF @Cdc_Status = 0
  BEGIN
      DECLARE @SQL NVARCHAR(500)

      SET @SQL=@DBName + '.sys.Sp_cdc_enable_db'

      EXEC (@SQL)

      PRINT ' CDC Enabled on ' + @DBName + ' successfully'
  END