Question

您好我正在尝试将数据库从一台服务器恢复到另一台服务器，其中.bak文件的逻辑名称每天都会更改新的时间戳，到目前为止，我已成功使用Jeff提供的以下SQL脚本确定此名称现在在这里：http://www.sqlservercentral.com/Forums/Topic1200360-391-1.aspx

            --===== Create a holding table for the file names
             CREATE TABLE #File
                    (
                    FileName    SYSNAME,
                    Depth       TINYINT,
                    IsFile      TINYINT
                    )
            ;
            --===== Capture the names in the desired directory
                 -- (Change "C:\Temp" to the directory of your choice)
             INSERT INTO #File
                    (FileName, Depth, IsFile)
             EXEC xp_DirTree '\\filepath\',1,1
            ;
            --===== Find the latest file using the "constant" characters
                 -- in the file name and the ISO style date.
             SELECT TOP 1 
                    FileName
               FROM #File
              WHERE IsFile = 1
                AND FileName LIKE '%.bak' ESCAPE '_'
              ORDER BY FileName DESC
            ;
            DROP TABLE #File

现在我的问题是如何使用它作为脚本还原操作的基础？任何帮助将非常感谢！

Answer 1

通过扩展上面的内容来缓存目录路径并按时间顺序排序bak文件以确定使用哪个文件，然后将恢复操作与日志移动相结合，我找到了成功。

--==CHECK IF DB EXISTS IF IT DOES DROP IT
USE [master]
IF EXISTS(SELECT * FROM sys.databases where name='insert db name')
DROP DATABASE [insert db name]

--==START THE RESTORE PROCESS
DECLARE @FileName varchar(255), @PathToBackup varchar(255), @RestoreFilePath varchar(1000)
DECLARE @Files TABLE (subdirectory varchar(255), depth int, [file] int)
SET NOCOUNT ON

--==SET THE FILEPATH
SET @PathToBackup = '\\insert path to back up'

 --insert into memory table using dirtree at a single file level
 INSERT INTO @Files
 EXEC master.dbo.xp_DirTree @PathToBackup,1,1
     SELECT TOP 1 
        @FileName = [subdirectory]
     FROM 
        @Files
     WHERE
        -- get where it is a file
        [file] = 1
     AND 
     --==FIND THE LOGICAL NAME OF THE BAK FILE FROM THE CHRONILOGICALLY ORDERED LIST   
        subdirectory LIKE '%.bak'
     ORDER BY
        -- order descending so newest file will be first by naming convention
     subdirectory DESC

IF LEFT(REVERSE(@PathToBackup), 1) != '\'
BEGIN
    SET @PathToBackup = @PathToBackup + '\'
END
SET @RestoreFilePath = @PathToBackup + @FileName

--Grab the file path to restore from
SELECT @RestoreFilePath

--BEGIN THE RESTORE TO THE DESIGNATED SERVER
RESTORE DATABASE [insert name of database to restore] 
FROM DISK = @RestoreFilePath
WITH
FILE = 1,
--Create transactional log files on target
MOVE 'mdf_file_name' TO 'file_path\file.mdf',
MOVE 'log_file_name' TO 'file_path\file.ldf', REPLACE;

Answer 2

这是我部分编写和部分收集的脚本。功能包括：

仅导入一个备份文件，该备份文件的任何文件名都带有.bak 结尾。如果有更多文件，则仅导入一个文件，不导入任何文件错误。
如果没有文件，则显示错误。
从数据库中踢出用户。

删除备份文件

DECLARE @DBName nvarchar(255), @FileName nvarchar(255), @PathToBackup nvarchar(255), @RestoreFilePath nvarchar(1000)
DECLARE @Files TABLE (subdirectory nvarchar(255), depth int, [file] int)
SET XACT_ABORT, NOCOUNT ON

SET @PathToBackup = N'I:\Folder'

-- insert into our memory table using dirtree and a single file level
INSERT INTO @Files
EXEC master.dbo.xp_DirTree @PathToBackup,1,1

SELECT 
@FileName = [subdirectory]
FROM 
@Files
WHERE
-- get where it is a file
[file] = 1
AND    
subdirectory LIKE N'%.bak'
ORDER BY
-- order descending so newest file will be first by naming convention
subdirectory DESC

IF LEFT(REVERSE(@PathToBackup), 1) != N'\'
BEGIN
    SET @PathToBackup = @PathToBackup + N'\'
END

SET @RestoreFilePath = @PathToBackup + @FileName
SET @DBName = LEFT(@FileName, LEN(@FileName)-4)
--  SELECT 'Replace AdventureWorks2016CTP3 in this script with @DBName'

SELECT @RestoreFilePath
BEGIN TRY
-- You can try to check if this command works "already":
--  ALTER DATABASE  [@DBName] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
    ALTER DATABASE  [AdventureWorks2016CTP3] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;

-- You can try to check if this command works "already":
--    RESTORE DATABASE [@DBName] 
    RESTORE DATABASE [AdventureWorks2016CTP3] 
    FROM DISK = @RestoreFilePath
    WITH FILE = 1,  NOUNLOAD,  REPLACE,  STATS = 10
END TRY
BEGIN CATCH
-- You can try to check if this command works "already":
--  ALTER DATABASE  [@DBName] SET MULTI_USER;
    ALTER DATABASE  [AdventureWorks2016CTP3] SET MULTI_USER;
    ; THROW
END CATCH

-- You can try to check if this command works "already":
--  ALTER DATABASE  [@DBName] SET MULTI_USER;
    ALTER DATABASE  [AdventureWorks2016CTP3] SET MULTI_USER;

-- This script is especially for the case where you replication from one location to another using backup and restore. 
-- Typically you don't need transaction log backups as all changes will be wiped out on next transfer.
-- You can try to check if this command works "already":
--  ALTER DATABASE  [@DBName] SET RECOVERY SIMPLE;
    ALTER DATABASE  [AdventureWorks2016CTP3] SET RECOVERY SIMPLE;

-- Delete file(s)
-- NOTE: This works only if you give deletion permissions as defined in https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/xp-cmdshell-server-configuration-option?view=sql-server-2017
-- EXAMPLE: exec xp_cmdshell 'del "I:\Directory\AdventureWorks2016CTP3___.bak"'
-- exec xp_cmdshell 'del "' + '@PathToBackup + ''\'' + @FileName + ''"''
DECLARE @cmd NVARCHAR(MAX) = 'xp_cmdshell ''del "' + @PathToBackup + @FileName + '"''';
-- SELECT @cmd
EXEC (@cmd)

脚本恢复使用xp_DirTree进行瞬态逻辑BAK文件名SQL Server

2 个答案: