Scenario:
You are working as SQL Server DBA or developer, you need to get Database Name from backups files or maybe other information such as
- Who performed this backup
- Which Server wrote this backup
- Size of backup in bytes
- Version of Database
- Either is backup is taken by compression enable or not
- Compatibility level of the database from which backup was created
and tons of other information. Not a big deal, We can use below statement to get above information.
RESTORE HEADERONLY FROMDISK='c:\backup\Yourbackupfile.bak'
That is great, but think about a situation when you have a lot of backup files and you would like to gather information and store in a table.
The below script can be used to save RESTORE HEADERONLY information to table for all the backup files which exists in backup folder you have provided.
--provide the folder path where backups are present
DECLARE @BackupFolder VARCHAR(128)
SET @BackupFolder='C:\Backup\'
--Get Backup files informaiton in temp table
IF OBJECT_ID('tempdb..#BackupFileList') ISNOTNULL
DROPTABLE #BackupFileList
IF OBJECT_ID('tempdb..#RestoreHeaderOnly') ISNOTNULL
DROPTABLE #RestoreHeaderOnly
--Create temp table to Store HeaderOnly Information from Database
CreateTable #RestoreHeaderOnly(
BackupName nvarchar(128) ,
BackupDescription nvarchar(255) ,
BackupType smallint ,
ExpirationDate datetime ,
Compressed bit ,
Positionsmallint ,
DeviceType tinyint ,
UserName nvarchar(128) ,
ServerName nvarchar(128) ,
DatabaseName nvarchar(128) ,
DatabaseVersion int ,
DatabaseCreationDate datetime ,
BackupSize numeric(20,0) ,
FirstLSN numeric(25,0) ,
LastLSN numeric(25,0) ,
CheckpointLSN numeric(25,0) ,
DatabaseBackupLSN numeric(25,0) ,
BackupStartDate datetime ,
BackupFinishDate datetime ,
SortOrder smallint ,
CodePage smallint ,
UnicodeLocaleId int ,
UnicodeComparisonStyle int ,
CompatibilityLevel tinyint ,
SoftwareVendorId int ,
SoftwareVersionMajor int ,
SoftwareVersionMinor int ,
SoftwareVersionBuild int ,
MachineName nvarchar(128) ,
Flags int ,
BindingID uniqueidentifier ,
RecoveryForkID uniqueidentifier ,
Collation nvarchar(128) ,
FamilyGUID uniqueidentifier ,
HasBulkLoggedData bit ,
IsSnapshot bit ,
IsReadOnly bit ,
IsSingleUser bit ,
HasBackupChecksums bit ,
IsDamaged bit ,
BeginsLogChain bit ,
HasIncompleteMetaData bit ,
IsForceOffline bit ,
IsCopyOnly bit ,
FirstRecoveryForkID uniqueidentifier ,
ForkPointLSN numeric(25,0) NULL ,
RecoveryModel nvarchar(60) ,
DifferentialBaseLSN numeric(25,0) NULL ,
DifferentialBaseGUID uniqueidentifier ,
BackupTypeDescription nvarchar(60) ,
BackupSetGUID uniqueidentifier NULL ,
CompressedBackupSize bigint ,
containment tinyint notNULL ,
KeyAlgorithm nvarchar(32) ,
EncryptorThumbprint varbinary(20) ,
EncryptorType nvarchar(32))
--create temp table to save backup files
--I am considering all backups are in root level
--if they are in sub folders, change your select query for #BackupFileList
CREATETABLE #BackupFileList (
Id intidentity(1,1),
BackupFile nvarchar(255),
Depthsmallint,
FileFlag bit)
INSERTINTO #BackupFileList (BackupFile,Depth,FileFlag)
EXEC xp_dirtree @BackupFolder, 10, 1
--Use Cursor to loop throught backups files
--to get header information and insert into temp table
Declare @BackupFile VARCHAR(500)
DECLARE Cur CURSORFOR
SELECT BackupFile from #BackupFileList
where fileflag=1
OPEN Cur
FETCHNextFROM Cur INTO @BackupFile
WHILE@@FETCH_STATUS = 0
BEGIN
insertinto #RestoreHeaderOnly
EXEC('RESTORE HEADERONLY FROM DISK = '''+@BackupFolder+@BackupFile+'''')
FETCHNextFROM Cur INTO @BackupFile
END
CLOSE Cur
DEALLOCATE Cur
--Check the Restore HeaderOnly information from temp table for all the backups files
select * From #RestoreHeaderOnlyI execute above query and it was able to get the information from backups files and insert into temp table. Here is partial snapshot as can't show all the columns.
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| How to get information such as Database Name,Version,Server Name from backup files and insert into SQL Server Table |