--缩小sql日志
-- exec p_compdb 'test'
create proc p_compdb
@dbname sysname, --要压缩的数据库名
@bkdatabase bit=1, --因为分离日志的步骤中,可能会损坏数据库,所以你可以选择是否自动数据库
@bkfname nvarchar(260)='' --备份的文件名,如果不指定,自动备份到默认备份目录,备份文件名为:数据库名+日期时间
as
--1.清空日志
exec('dump transaction ['[email protected]+'] with no_log')
--2.截断事务日志：
exec('backup log ['[email protected]+'] with no_log')
--3.收缩数据库文件(如果不压缩,数据库的文件不会减小
exec('dbcc shrinkdatabase(['[email protected]+'])')
--4.设置自动收缩
exec('exec sp_dboption '''[email protected]+''',''autoshrink'',''true''')
--后面的步骤有一定危险,你可以可以选择是否应该这些步骤
--5.分离数据库
if @bkdatabase=1
begin
if isnull(@bkfname,'')=''
set @[email protected]+'_'+convert(varchar,getdate(),112)
+replace(convert(varchar,getdate(),108),':','')
select 提示信息='备份数据库到sql 默认备份目录,备份文件名:'[email protected]
exec('backup database ['[email protected]+'] to disk='''[email protected]+'''')
end
--进行分离处理
create table #t(fname nvarchar(260),type int)
exec('insert into #t select filename,type=status&0x40 from ['[email protected]+']..sysfiles')
exec('sp_detach_db '''[email protected]+'''')
--删除日志文件
declare @fname nvarchar(260),@s varchar(8000)
declare tb cursor local for select fname from #t where type=64
open tb
fetch next from tb into @fname
while @@fetch_status=0
begin
set @s='del "'+rtrim(@fname)+'"'
exec master..xp_cmdshell @s,no_output
fetch next from tb into @fname
end
close tb
deallocate tb
--附加数据库
set @s=''
declare tb cursor local for select fname from #t where type=0
open tb
fetch next from tb into @fname
while @@fetch_status=0
begin
set @[email protected]+','''+rtrim(@fname)+''''
fetch next from tb into @fname
end
close tb
deallocate tb
exec('sp_attach_single_file_db '''[email protected]+''''[email protected])
go
