'*************************************************************************
'**模 塊 名:fBackupDatabase_a
'**描 述:備份數據庫,返回出錯信息,正常恢復,返回""
'**調 用:fBackupDatabase_a "備份文件名","數據庫名"
'**參數說明:
'** sBackUpfileName 恢復後的數據庫存放目錄
'** sDataBaseName 備份的數據名
'** sIsAddBackup 是否追加到備份文件中
'**說 明:引用Microsoft ActiveX Data Objects 2.x Library
'**創 建 人:鄒建
'**日 期:2003年12月09日
'*************************************************************************
Public Function fBackupDatabase_a(ByVal sBackUpfileName$ _
, ByVal sDataBaseName$ _
, Optional ByVal sIsAddBackup As Boolean = False _
) As String
Dim iDb As ADODB.Connection
Dim iConcStr$, iSql$, iReturn$
On Error GoTo lbErr
'創建對象
Set iDb = New ADODB.Connection
'連接數據庫服務器,根據你的情況修改連接字符串
iConcStr = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Data Source=zj"
iDb.Open iConcStr
'生成數據庫備份語句
iSql = "backup database [" & sDataBaseName & "]" & vbCrLf & _
"to disk='" & sBackUpfileName & "'" & vbCrLf & _
"with description='" & "zj-backup at:" & Date & "(" & Time & ")'" & vbCrLf & _
IIf(sIsAddBackup, "", ",init")
iDb.Execute iSql
GoTo lbExit
lbErr:
iReturn = Error
lbExit:
fBackupDatabase_a = iReturn
End Function
'*************************************************************************
'**模 塊 名:frestoredatabase_a
'**描 述:恢復數據庫,返回出錯信息,正常恢復,返回""
'**調 用:frestoredatabase_a "備份文件名","數據庫名"
'**參數說明:
'** sDataBasePath 恢復後的數據庫存放目錄
'** sBackupNumber 是從那個備份號恢復
'** sReplaceExist 指定是否覆蓋已經存在的數據
'**說 明:引用Microsoft ActiveX Data Objects 2.x Library
'**創 建 人:鄒建
'**日 期:2003年12月09日
'*************************************************************************
Public Function fRestoreDatabase_a(ByVal sBackUpfileName$ _
, ByVal sDataBaseName$ _
, Optional ByVal sDataBasePath$ = "" _
, Optional ByVal sBackupNumber& = 1 _
, Optional ByVal sReplaceExist As Boolean = False _
) As String
Dim iDb As ADODB.Connection, iRe As ADODB.Recordset
Dim iConcStr$, iSql$, iReturn$, iI&
On Error GoTo lbErr
'創建對象
Set iDb = New ADODB.Connection
Set iRe = New ADODB.Recordset
'連接數據庫服務器,根據你的情況修改連接字符串
iConcStr = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Data Source=SQL服務器名"
iDb.Open iConcStr
'得到還原後的數據庫存放目錄,如果沒有指定,存放到SQL SERVER的DATA目錄
If sDataBasePath = "" Then
iSql = "select filename from master..sysfiles"
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
iSql = iRe(0)
iRe.Close
sDataBasePath = Left(iSql, InStrRev(iSql, "/"))
End If
'檢查數據庫是否存在
If sReplaceExist = False Then
iSql = "select 1 from master..sysdatabases where name='" & sDataBaseName & "'"
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
If iRe.EOF = False Then
iReturn = "數據庫已經存在!"
iRe.Close
GoTo lbExit
End If
iRe.Close
End If
'關閉用戶進程,防止其它用戶正在使用數據庫,導致數據恢復失敗
iSql = "select spid from master..sysprocesses where dbid=db_id('" & sDataBaseName & "')"
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
While iRe.EOF = False
iSql = "kill " & iRe(0)
iDb.Execute iSql
iRe.MoveNext
Wend
iRe.Close
'獲取數據庫恢復信息
iSql = "restore filelistonly from disk='" & sBackUpfileName & "'" & vbCrLf & _
"with file=" & sBackupNumber
iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
'生成數據庫恢復語句
iSql = "restore database [" & sDataBaseName & "]" & vbCrLf & _
"from disk='" & sBackUpfileName & "'" & vbCrLf & _
"with file=" & sBackupNumber & vbCrLf
With iRe
While Not .EOF
iReturn = iRe("PhysicalName")
iI = InStrRev(iReturn, ".")
iReturn = IIf(iI = 0, "", Mid(iReturn, iI)) & "'"
iSql = iSql & ",move '" & iRe("LogicalName") & _
"' to '" & sDataBasePath & sDataBaseName & iReturn & vbCrLf
.MoveNext
Wend
.Close
End With
iSql = iSql & IIf(sReplaceExist, ",replace", "")
iDb.Execute iSql
iReturn = ""
GoTo lbExit
lbErr:
iReturn = Error
lbExit:
fRestoreDatabase_a = iReturn
End Function
--上面是程序的,下面是用存儲過程的
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_backupdb]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_backupdb]
GO
/*--備份數據庫的通用存儲過程
--鄒建 2003.10--*/
/*--調用示例
--備份當前數據庫
exec p_backupdb @bkpath='c:/',@bkfname='/DBNAME/_/DATE/_db.bak'
--差異備份當前數據庫
exec p_backupdb @bkpath='c:/',@bkfname='db_/DATE/_df.bak',@bktype='DF'
--備份當前數據庫日誌
exec p_backupdb @bkpath='c:/',@bkfname='db_/DATE/_log.bak',@bktype='LOG'
--*/
create proc p_backupdb
@dbname sysname='', --要備份的數據庫名稱,不指定則備份當前數據庫
@bkpath nvarchar(260)='', --備份文件的存放目錄,不指定則使用SQL默認的備份目錄
@bkfname nvarchar(260)='', --備份文件名,文件名中可以用/DBNAME/代表數據庫名,/DATE/代表日期,/TIME/代表時間
@bktype nvarchar(10)='DB', --備份類型:'DB'備份數據庫,'DF' 差異備份,'LOG' 日誌備份
@appendfile bit=1, --追加/覆蓋備份文件
@password nvarchar(20)='' --爲備份文件設置的密碼(僅sql2000支持),設置後,恢復時必須提供此密碼
as
declare @sql varchar(8000)
if isnull(@dbname,'')='' set @dbname=db_name()
if isnull(@bkpath,'')=''
begin
select @bkpath=rtrim(reverse(filename)) from master..sysfiles where name='master'
select @bkpath=substring(@bkpath,charindex('/',@bkpath)+1,4000)
,@bkpath=reverse(substring(@bkpath,charindex('/',@bkpath),4000))+'BACKUP/'
end
if isnull(@bkfname,'')='' set @bkfname='/DBNAME/_/DATE/_/TIME/.BAK'
set @bkfname=replace(replace(replace(@bkfname,'/DBNAME/',@dbname)
,'/DATE/',convert(varchar,getdate(),112))
,'/TIME/',replace(convert(varchar,getdate(),108),':',''))
set @sql='backup '+case @bktype when 'LOG' then 'log ' else 'database ' end +@dbname
+' to disk='''+@bkpath+@bkfname
+''' with '+case @bktype when 'DF' then 'DIFFERENTIAL,' else '' end
+case @appendfile when 1 then 'NOINIT' else 'INIT' end
+case isnull(@password,'') when '' then '' else ',PASSWORD='''+@password+'''' end
exec(@sql)
go
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_RestoreDb]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_RestoreDb]
GO
/*--恢復數據庫的通用存儲過程
--鄒建 2003.10--*/
/*--調用示例
--完整恢復數據庫
exec p_RestoreDb @bkfile='c:/db_20031015_db.bak',@dbname='db'
--差異備份恢復
exec p_RestoreDb @bkfile='c:/db_20031015_db.bak',@dbname='db',@retype='DBNOR'
exec p_RestoreDb @bkfile='c:/db_20031015_df.bak',@dbname='db',@retype='DF'
--日誌備份恢復
exec p_RestoreDb @bkfile='c:/db_20031015_db.bak',@dbname='db',@retype='DBNOR'
exec p_RestoreDb @bkfile='c:/db_20031015_log.bak',@dbname='db',@retype='LOG'
--*/
create proc p_RestoreDb
@bkfile nvarchar(1000), --定義要恢復的備份文件名(帶路徑)
@dbname sysname='', --定義恢復後的數據庫名,默認爲備份的文件名
@dbpath nvarchar(260)='', --恢復後的數據庫存放目錄,不指定則爲SQL的默認數據目錄
@retype nvarchar(10)='DB', --恢復類型:'DB'完事恢復數據庫,'DBNOR' 爲差異恢復,日誌恢復進行完整恢復,'DF' 差異備份的恢復,'LOG' 日誌恢復
@filenumber int=1, --恢復的文件號
@overexist bit=1, --是否覆蓋已經存在的數據庫,僅@retype爲'DB'/'DBNOR'是有效
@killuser bit=1, --是否關閉用戶使用進程,僅@overexist=1時有效
@password nvarchar(20)='' --備份文件的密碼(僅sql2000支持),如果備份時設置了密碼,必須提供此密碼
as
declare @sql varchar(8000)
--得到恢復後的數據庫名
if isnull(@dbname,'')=''
select @sql=reverse(@bkfile)
,@sql=case when charindex('.',@sql)=0 then @sql
else substring(@sql,charindex('.',@sql)+1,1000) end
,@sql=case when charindex('/',@sql)=0 then @sql
else left(@sql,charindex('/',@sql)-1) end
,@dbname=reverse(@sql)
--得到恢復後的數據庫存放目錄
if isnull(@dbpath,'')=''
begin
select @dbpath=rtrim(reverse(filename)) from master..sysfiles where name='master'
select @dbpath=reverse(substring(@dbpath,charindex('/',@dbpath),4000))
end
--生成數據庫恢復語句
set @sql='restore '+case @retype when 'LOG' then 'log ' else 'database ' end+@dbname
+' from disk='''+@bkfile+''''
+' with file='+cast(@filenumber as varchar)
+case when @overexist=1 and @retype in('DB','DBNOR') then ',replace' else '' end
+case @retype when 'DBNOR' then ',NORECOVERY' else ',RECOVERY' end
+case isnull(@password,'') when '' then '' else ',PASSWORD='''+@password+'''' end
--添加移動邏輯文件的處理
if @retype='DB' or @retype='DBNOR'
begin
--從備份文件中獲取邏輯文件名
declare @lfn nvarchar(128),@tp char(1),@i int,@s varchar(1000)
--創建臨時表,保存獲取的信息
create table #tb(ln nvarchar(128),pn nvarchar(260),tp char(1),fgn nvarchar(128),sz numeric(20,0),Msz numeric(20,0))
--從備份文件中獲取信息
set @s='restore filelistonly from disk='''+@bkfile+''''
++case isnull(@password,'') when '' then '' else ' with PASSWORD='''+@password+'''' end
insert into #tb exec(@s)
declare #f cursor for select ln,tp from #tb
open #f
fetch next from #f into @lfn,@tp
set @i=0
while @@fetch_status=0
begin
select @sql=@sql+',move '''+@lfn+''' to '''+@dbpath+@dbname+cast(@i as varchar)
+case @tp when 'D' then '.mdf''' else '.ldf''' end
,@i=@i+1
fetch next from #f into @lfn,@tp
end
close #f
deallocate #f
end
--關閉用戶進程處理
if @overexist=1 and @killuser=1
begin
declare hCForEach cursor for
select s='kill '+cast(spid as varchar) from master..sysprocesses
where dbid=db_id(@dbname)
exec sp_msforeach_worker '?'
end
--恢復數據庫
exec(@sql)
go
/*----------------備份和恢復示例---------------------*/
/*--
exec p_backupdb @dbname='oa',
@bkpath='g:/db_backup/',
@bkfname='/DBNAME/_/DATE/_db.bak',
@bktype='DB'
--*/
/*--
exec p_restoredb @bkfile='g:/db_backup/oa_20040713_db.bak',
@dbname='sbdb',
@retype='DB'
--*/