AUTOMATED RESTORE TLOG SCRIPT
AUTOMATED RESTORE TLOG SCRIPT
"In the event of
database corruption or data loss, if multiple log or differential files need to
be restored, this script is capable of generating the necessary restore script
for all log files to be restored onto the database."
USE Master;
GO
SET NOCOUNT ON
-- 1 - Variable declaration
DECLARE @dbName sysname
DECLARE @backupPath NVARCHAR(500)
DECLARE @cmd NVARCHAR(500)
DECLARE @fileList TABLE (backupFile NVARCHAR(255))
DECLARE @lastFullBackup NVARCHAR(500)
DECLARE @lastDiffBackup NVARCHAR(500)
DECLARE @backupFile NVARCHAR(500)
-- 2 - Initialize variables
SET @dbName = 'Customer'
SET @backupPath = 'D:\SQLBackups\'
-- 3 - get list of files
SET @cmd = 'DIR /b "' + @backupPath + '"'
INSERT INTO @fileList(backupFile)
EXEC master.sys.xp_cmdshell @cmd
-- 4 - Find latest full backup
SELECT @lastFullBackup = MAX(backupFile)
FROM @fileList
WHERE backupFile LIKE '%.BAK'
AND backupFile LIKE @dbName + '%'
SET @cmd = 'RESTORE DATABASE [' + @dbName + '] FROM DISK = '''
+ @backupPath + @lastFullBackup + ''' WITH NORECOVERY, REPLACE'
PRINT @cmd
-- 4 - Find latest diff backup
SELECT @lastDiffBackup = MAX(backupFile)
FROM @fileList
WHERE backupFile LIKE '%.DIF'
AND backupFile LIKE @dbName + '%'
AND backupFile > @lastFullBackup
-- check to make sure there is a diff backup
IF @lastDiffBackup IS NOT NULL
BEGIN
SET @cmd = 'RESTORE DATABASE [' + @dbName + '] FROM DISK = '''
+ @backupPath + @lastDiffBackup + ''' WITH NORECOVERY'
PRINT @cmd
SET @lastFullBackup = @lastDiffBackup
END
-- 5 - check for log backups
DECLARE backupFiles CURSOR FOR
SELECT backupFile
FROM @fileList
WHERE backupFile LIKE '%.TRN'
AND backupFile LIKE @dbName + '%'
AND backupFile > @lastFullBackup
OPEN backupFiles
-- Loop through all the files for the database
FETCH NEXT FROM backupFiles INTO @backupFile
WHILE @@FETCH_STATUS = 0
BEGIN
SET @cmd = 'RESTORE LOG [' + @dbName + '] FROM DISK = '''
+ @backupPath + @backupFile + ''' WITH NORECOVERY'
PRINT @cmd
FETCH NEXT FROM backupFiles INTO @backupFile
END
CLOSE backupFiles
DEALLOCATE backupFiles
-- 6 - put database in a read/write state
SET @cmd = 'RESTORE DATABASE [' + @dbName + '] WITH RECOVERY'
PRINT @cmd
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