Backup--备份相关的信息查看及小技巧

--查看指定数据库当前最小 LSN

DECLARE @database_name NVARCHAR( 200)

SET @database_name ='DBName'

SELECT  MIN (redo_start_lsn) 

FROM master .sys. master_files 

WHERE database_id = DB_ID ( @database_name)

AND TYPE = 0

AND STATE IN (0, 1)

AND redo_start_lsn IS NOT NULL

--判断某日志备份是否能应用到当前正在还原的 DB上

USE master ;

GO

DECLARE @MyBitVar BIT;

EXEC sp_can_tlog_be_applied

     @backup_file_name = N'C:AdventureWorks2012.bak' ,

     @database_name = N'AdventureWorks2012',

     @result = @MyBitVar OUTPUT;

SELECT @MyBitVar

GO

--使用RESTORE Headonly 来查看备份信息

DECLARE @command NVARCHAR( 1000)

DECLARE @backup_header TABLE

(

BackupName             NVARCHAR( 128)  NULL,

BackupDescription      NVARCHAR (256)   NULL,

BackupType             INT,  

ExpirationDate         DATETIME NULL,

Compressed             INT, 

POSITION               INT, 

DeviceType             INT, 

UserName               NVARCHAR( 128) NULL,

SERVERNAME             NVARCHAR( 128),

DatabaseName           NVARCHAR( 128),

DatabaseVersion        INT, 

DatabaseCreationDate    DATETIME, 

BackupSize             NUMERIC( 20,0 ) NULL, 

FirstLsn               NUMERIC( 25,0 ) NULL, 

LastLsn                NUMERIC(25 ,0) NULL,

CheckpointLsn          NUMERIC( 25,0 ) NULL, 

DatabaseBackupLsn      NUMERIC (25, 0) NULL,

BackupStartDate        DATETIME, 

BackupFinishDate       DATETIME, 

SortOrder              INT, 

CodePage               INT, 

UnicodeLocaleId        INT, 

UnicodeComparisonStyle INT, 

CompatibilityLevel     INT ,

SoftwareVendorId       INT, 

SoftwareVersionMajor    INT, 

SoftwareVersionMinor    INT, 

SoftwareVersionBuild    INT, 

MachineName            NVARCHAR( 128),

Flags                  INT NULL, 

BindingId              UNIQUEIDENTIFIER NULL,

RecoveryForkId         UNIQUEIDENTIFIER NULL,

COLLATION              NVARCHAR( 128) NULL,

FamilyGUID UNIQUEIDENTIFIER NULL,

HasBulkLoggedData BIT NULL,

IsSnapshot BIT NULL,

IsReadOnly BIT NULL,

IsSingleUser BIT NULL,

HasBackupChecksums BIT NULL,

IsDamaged BIT NULL,

BeginsLogChain BIT NULL,

HasIncompleteMetadata BIT NULL,

IsForceOffline BIT NULL,

IsCopyOnly BIT NULL,

FirstRecoveryForkID UNIQUEIDENTIFIER NULL,

ForkPointLSN NUMERIC (25, 0) NULL,

RecoveryModel NVARCHAR (60) NULL,

DifferentialBaseLSN NUMERIC( 25,0 ) NULL, 

DifferentialBaseGUID UNIQUEIDENTIFIER NULL,

BackupTypeDescription NVARCHAR( 60) NULL,

BackupSetGUID UNIQUEIDENTIFIER NULL,

CompressedBackupSize NUMERIC( 20,0 ) NULL

)

DECLARE @backup_file_name NVARCHAR( 500)

SET @backup_file_name =''

SELECT @command = N'restore headeronly from disk = N'''

+ REPLACE (@backup_file_name, N'''', N'''''') + N''''  

INSERT INTO @backup_header

EXECUTE(@command )

SELECT *

FROM @backup_file_name

 --=======================================================
使用TF3226来阻止将备份记录写入ERRORLOG
TF 3226被开启后，备份完成后，不会向ERRORLOG里写记录
TF 3326 对数据库备份和日志备份都起效
http://msdn.microsoft.com/zh-cn/library/ms188396.aspx

--=======================================================
使用DBCC来查看备份过程
DBCC traceon (3004, 3605, -1)
--参考：http://www.cnblogs.com/lyhabc/p/3452894.html