Início / dba / Perguntas / 150241
Accepted
Fza
Asked: 2016-09-21 23:18:25 +0800 CST

Consulta T-SQL para data do último backup completo, tamanho e local

  • 772

Estou usando a consulta T-SQL abaixo para determinar a data do último backup completo do banco de dados e também retornar o tamanho e o local do arquivo de backup. Meu problema é que ele não retornará nenhum dado para bancos de dados que não tiveram backups ou para os quais não há histórico de backup. Idealmente, eu gostaria de modificar a consulta para que todos os bancos de dados fossem retornados, independentemente de haver ou não histórico de backup para eles. Alguém pode aconselhar como a consulta abaixo pode ser modificada para acomodar isso?

WITH LastBackUp AS
(
SELECT  bs.database_name,
        bs.backup_size,
        bs.backup_start_date,
        bmf.physical_device_name,
        Position = ROW_NUMBER() OVER( PARTITION BY bs.database_name ORDER BY bs.backup_start_date DESC )
FROM  msdb.dbo.backupmediafamily bmf
JOIN msdb.dbo.backupmediaset bms ON bmf.media_set_id = bms.media_set_id
JOIN msdb.dbo.backupset bs ON bms.media_set_id = bs.media_set_id
WHERE   bs.[type] = 'D'
AND bs.is_copy_only = 0
)
SELECT 
        database_name AS [Database],
        CAST(backup_size / 1048576 AS DECIMAL(10, 2) ) AS [BackupSizeMB],
        backup_start_date AS [Last Full DB Backup Date],
        physical_device_name AS [Backup File Location]
FROM LastBackUp
WHERE Position = 1
ORDER BY [Database];
sql-server t-sql

2 respostas

  1. Best Answer

    Você precisa consultar a lista de bancos de dados primeiro (está em sys.databases) e depois juntá-la à sua consulta:

    WITH LastBackUp AS
(
SELECT  bs.database_name,
        bs.backup_size,
        bs.backup_start_date,
        bmf.physical_device_name,
        Position = ROW_NUMBER() OVER( PARTITION BY bs.database_name ORDER BY bs.backup_start_date DESC )
FROM  msdb.dbo.backupmediafamily bmf
JOIN msdb.dbo.backupmediaset bms ON bmf.media_set_id = bms.media_set_id
JOIN msdb.dbo.backupset bs ON bms.media_set_id = bs.media_set_id
WHERE   bs.[type] = 'D'
AND bs.is_copy_only = 0
)
SELECT 
        sd.name AS [Database],
        CAST(backup_size / 1048576 AS DECIMAL(10, 2) ) AS [BackupSizeMB],
        backup_start_date AS [Last Full DB Backup Date],
        physical_device_name AS [Backup File Location]
FROM sys.databases AS sd
LEFT JOIN LastBackUp AS lb
    ON sd.name = lb.database_name
    AND Position = 1
ORDER BY [Database];
    • 9

  2. Apenas para adicionar à bela resposta de Spaghettidba :

    e se você fizer backup em mais de um arquivo? este script irá mostrar-lhe tudo.

            declare @backup_type CHAR(1) = 'D' --'D' full, 'L' log
        ;with Radhe as (
            SELECT  @@Servername as [Server_Name],
            B.name as Database_Name, 
            ISNULL(STR(ABS(DATEDIFF(day, GetDate(), MAX(Backup_finish_date)))), 'NEVER') as DaysSinceLastBackup,
            ISNULL(Convert(char(11), MAX(backup_finish_date), 113)+ ' ' + CONVERT(VARCHAR(8),MAX(backup_finish_date),108), 'NEVER') as LastBackupDate
            ,BackupSize_GB=CAST(COALESCE(MAX(A.BACKUP_SIZE),0)/1024.00/1024.00/1024.00 AS NUMERIC(18,2))
            ,BackupSize_MB=CAST(COALESCE(MAX(A.BACKUP_SIZE),0)/1024.00/1024.00 AS NUMERIC(18,2))
            ,media_set_id = MAX(A.media_set_id)
            ,[AVG Backup Duration]= AVG(CAST(DATEDIFF(s, A.backup_start_date, A.backup_finish_date) AS int))
            ,[Longest Backup Duration]= MAX(CAST(DATEDIFF(s, A.backup_start_date, A.backup_finish_date) AS int))
            ,A.type
            FROM sys.databases B 

            LEFT OUTER JOIN msdb.dbo.backupset A 
                         ON A.database_name = B.name 
                        AND A.is_copy_only = 0
                        AND (@backup_type IS NULL OR A.type = @backup_type  )

            GROUP BY B.Name, A.type

        )

         SELECT r.[Server_Name]
               ,r.Database_Name
               ,[Backup Type] = r.type 
               ,r.DaysSinceLastBackup
               ,r.LastBackupDate
               ,r.BackupSize_GB
               ,r.BackupSize_MB
               ,F.physical_device_name
               ,r.[AVG Backup Duration]
               ,r.[Longest Backup Duration]

           FROM Radhe r

            LEFT OUTER JOIN msdb.dbo.backupmediafamily F
                         ON R.media_set_id = F.media_set_id

            ORDER BY r.Server_Name, r.Database_Name
    • 1

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