sqlserver常用 的统计命令

1、查看某个数据库的在线连接数

SELECT * FROM 

[Master].[dbo].[SYSPROCESSES] WHERE [DBID] 

IN 

(

  SELECT 

   [DBID]

  FROM 

   [Master].[dbo].[SYSDATABASES] 

  WHERE 

   NAME='数据库名称'

)

2、列出前50条占用cpu较高的sql

SELECT TOP 50

total_worker_time/execution_count AS [Avg CPU Time],

(SELECT SUBSTRING(text,statement_start_offset/2,(CASE WHEN statement_end_offset = -1 then LEN(CONVERT(nvarchar(max), text)) * 2 ELSE statement_end_offset end -statement_start_offset)/2) FROM sys.dm_exec_sql_text(sql_handle)) AS query_text, *

FROM sys.dm_exec_query_stats 

ORDER BY [Avg CPU Time] DESC

3、当前sql执行的进程

SELECT   spid,
blocked,
DB_NAME(sp.dbid) AS DBName,
program_name,
waitresource,
lastwaittype,
sp.loginame,
sp.hostname,
a.[Text] AS [TextData],
SUBSTRING(A.text, sp.stmt_start / 2,
(CASE WHEN sp.stmt_end = -1 THEN DATALENGTH(A.text) ELSE sp.stmt_end
END - sp.stmt_start) / 2) AS [current_cmd]
FROM     sys.sysprocesses AS sp OUTER APPLY sys.dm_exec_sql_text (sp.sql_handle) AS A
WHERE    spid > 50
ORDER BY blocked DESC, DB_NAME(sp.dbid) ASC, a.[text];

4、锁定的sql

select request_session_id spid,object_name(resource_associated_entity_id) tableName

from sys.dm_tran_locks where resource_type='object'

--spid  锁表进程

--tableName 被锁表名

--解锁：

declare @spid int

Set @spid =57--锁表进程

declare @sql varchar(1000)

set @sql='kill'+cast(@spid as varchar)

exec(@sql)
5、等待执行的sql

SELECT
blocking_session_id '阻塞进程的ID',
wait_duration_ms '等待时间(毫秒)',
session_id '(会话ID)'FROM
sys.dm_os_waiting_tasks

6、查看锁信息进程

create table #t(req_spid int,obj_name sysname)

declare @s nvarchar(4000)
,@rid int,@dbname sysname,@id int,@objname sysname

declare tb cursor for
select distinct req_spid,dbname=db_name(rsc_dbid),rsc_objid
from master..syslockinfo where rsc_type in(4,5)
open tb
fetch next from tb into @rid,@dbname,@id
while @@fetch_status=0
begin
set @s='select @objname=name from ['+@dbname+']..sysobjects where id=@id'
exec sp_executesql @s,N'@objname sysname out,@id int',@objname out,@id
insert into #t values(@rid,@objname)
fetch next from tb into @rid,@dbname,@id
end
close tb
deallocate tb

select 进程id=a.req_spid
,数据库=db_name(rsc_dbid)
,类型=case rsc_type when 1 then 'NULL 资源（未使用）'
when 2 then '数据库'
when 3 then '文件'
when 4 then '索引'
when 5 then '表'
when 6 then '页'
when 7 then '键'
when 8 then '扩展盘区'
when 9 then 'RID（行 ID)'
when 10 then '应用程序'
end
,对象id=rsc_objid
,对象名=b.obj_name
,rsc_indid
from master..syslockinfo a left join #t b on a.req_spid=b.req_spid

go
drop table #t