Snapshot--使用脚本创建快照

USE master;
SET NOCOUNT ON;
GO
DECLARE @dbname varchar(255); --数据库名
DECLARE @snapname varchar(255);--快照名
DECLARE @snap_dir varchar(255);--保存路径
 
SET @dbname=‘DB1‘;
SET @snapname=‘DB1_SNAP‘;
SET @snap_dir=‘D:\DB\‘
BEGIN TRY
-- 删除快照如果快照存在
IF  EXISTS (SELECT name FROM master.sys.databases
WHERE name = @snapname)
BEGIN
   EXEC (‘DROP DATABASE ‘+@snapname);
END
 
--将数据库文件放入临时表中
SELECT name AS DBFileName INTO #tempFiles
FROM master.sys.master_files
WHERE type<>1 AND database_id=DB_ID(@dbname);
DECLARE @tempSQL NVARCHAR(2000);
DECLARE @tempFileName NVARCHAR(200)
SET @tempSQL=‘CREATE  DATABASE ‘+@snapname+‘ ON ‘;
WHILE((SELECT COUNT(1) FROM #tempFiles)>0)
BEGIN
   SELECT TOP(1) @tempFileName=DBFileName FROM #tempFiles;
   SET @tempSQL=@tempSQL+‘(NAME=‘+‘‘‘‘+@tempFileName+‘‘‘,FILENAME=‘‘‘+@snap_dir+@tempFileName+‘.snap‘‘)‘;
   DELETE FROM #tempFiles WHERE DBFileName=@tempFileName;
END
DROP TABLE #tempFiles;
SET @tempSQL=@tempSQL+‘AS SNAPSHOT OF ‘+@dbname+‘;‘
 
PRINT ‘创建脚本：‘
PRINT @tempSQL;
EXEC(@tempSQL)
PRINT ‘创建成功‘;
 
END TRY
BEGIN CATCH
PRINT ‘执行出错，错误信息：‘
PRINT ERROR_MESSAGE()
END CATCH