查询数据库死锁
#查询CPU占用高的语句
SELECT TOP 10 total_worker_time/execution_count AS avg_cpu_cost, plan_handle, execution_count, (SELECT SUBSTRING(text, statement_start_offset/2 + 1, (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_cost] DESC
#查询缺失索引
#sql server性能分析--执行sql次数和逻辑次数，先以下命令清除sql server的缓存，dbcc freeProcCache 这个是最后一个
#查看数据库死锁
SELECT DatabaseName = DB_NAME(database_id) ,[Number Indexes Missing] = count(*) FROM sys.dm_db_missing_index_details GROUP BY DB_NAME(database_id) ORDER BY 2 DESC; SELECT TOP 10 [Total Cost] = ROUND(avg_total_user_cost * avg_user_impact * (user_seeks + user_scans),0) , avg_user_impact , TableName = statement , [EqualityUsage] = equality_columns , [InequalityUsage] = inequality_columns , [Include Cloumns] = included_columns FROM sys.dm_db_missing_index_groups g INNER JOIN sys.dm_db_missing_index_group_stats s ON s.group_handle = g.index_group_handle INNER JOIN sys.dm_db_missing_index_details d ON d.index_handle = g.index_handle ORDER BY [Total Cost] DESC;
SELECT creation_time N'语句编译时间' ,last_execution_time N'上次执行时间' ,total_physical_reads N'物理读取总次数' ,total_logical_reads/execution_count N'每次逻辑读次数' ,total_logical_reads N'逻辑读取总次数' ,total_logical_writes N'逻辑写入总次数' , execution_count N'执行次数' , total_worker_time/1000 N'所用的CPU总时间ms' , total_elapsed_time/1000 N'总花费时间ms' , (total_elapsed_time / execution_count)/1000 N'平均时间ms' ,SUBSTRING(st.text, (qs.statement_start_offset/2) + 1, ((CASE statement_end_offset WHEN -1 THEN DATALENGTH(st.text) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) + 1) N'执行语句' FROM sys.dm_exec_query_stats AS qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st where SUBSTRING(st.text, (qs.statement_start_offset/2) + 1, ((CASE statement_end_offset WHEN -1 THEN DATALENGTH(st.text) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) + 1) not like '%fetch%' ORDER BY total_elapsed_time / execution_count DESC;
生产环境：
View Code
USE [master] GO /****** Object: StoredProcedure [dbo].[sp_who_lock] Script Date: 05/03/2013 16:46:28 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER procedure [dbo].[sp_who_lock] as begin declare @spid int,@bl int, @intTransactionCountOnEntry int, @intRowcount int, @intCountProperties int, @intCounter int create table #tmp_lock_who ( id int identity(1,1), spid smallint, bl smallint) IF @@ERROR<>0 RETURN @@ERROR insert into #tmp_lock_who(spid,bl) select 0 ,blocked from (select * from sysprocesses where blocked>0 ) a where not exists(select * from (select * from sysprocesses where blocked>0 ) b where a.blocked=spid) union select spid,blocked from sysprocesses where blocked>0 IF @@ERROR<>0 RETURN @@ERROR -- 找到临时表的记录数 select @intCountProperties = Count(*),@intCounter = 1 from #tmp_lock_who IF @@ERROR<>0 RETURN @@ERROR if @intCountProperties=0 select '现在没有阻塞和死锁信息' as message -- 循环开始 while @intCounter <= @intCountProperties begin -- 取第一条记录 select @spid = spid,@bl = bl from #tmp_lock_who where Id = @intCounter begin if @spid =0 select '引起数据库死锁的是: '+ CAST(@bl AS VARCHAR(10)) + '进程号,其执行的SQL语法如下' else select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@bl AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下' DBCC INPUTBUFFER (@bl ) end -- 循环指针下移 set @intCounter = @intCounter + 1 end drop table #tmp_lock_who return 0 end ===================================================================================== USE [CRS] GO /****** Object: StoredProcedure [dbo].[sp_who_lock2] Script Date: 05/03/2013 16:47:49 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER procedure [dbo].[sp_who_lock2] as begin declare @spid int declare @blk int declare @count int declare @index int declare @lock tinyint set @lock=0 create table #temp_who_lock ( id int identity(1,1), spid int, blk int ) create table #tmp_lock_mem ( EventType varchar(30), Parameters varchar(10), EventInfo nvarchar(max) ) if @@error<>0 return @@error insert into #temp_who_lock(spid,blk) select 0 ,blocked from (select * from master..sysprocesses where blocked>0)a where not exists(select * from master..sysprocesses where a.blocked =spid and blocked>0) union select spid,blocked from master..sysprocesses where blocked>0 if @@error<>0 return @@error select @count=count(*),@index=1 from #temp_who_lock if @@error<>0 return @@error if @count=0 begin select '没有阻塞和死锁信息' return 0 end while @index<=@count begin if exists(select 1 from #temp_who_lock a where id>@index and exists(select 1 from #temp_who_lock where id<=@index and a.blk=spid)) begin set @lock=1 select @spid=spid,@blk=blk from #temp_who_lock where id=@index select '引起数据库死锁的是: '+ CAST(@spid AS VARCHAR(10)) + '进程号,其执行的SQL语法如下' select @spid, @blk insert into CRS.dbo.sp_who_lock2LogForSPID select spid,blk,'引起数据库死锁的是: '+ CAST(@spid AS VARCHAR(10)) + '进程号,其执行的SQL语法如下',GETDATE() from #temp_who_lock where id=@index --dbcc inputbuffer(@spid) delete #tmp_lock_mem insert into #tmp_lock_mem exec('dbcc inputbuffer('+@spid+')') --insert into DBWareTest.dbo.sp_who_lock2Log exec('dbcc inputbuffer('+@spid+')') insert into CRS.dbo.sp_who_lock2Log(EventType,Parameters,EventInfo) select * from #tmp_lock_mem --dbcc inputbuffer(@blk) delete #tmp_lock_mem insert into #tmp_lock_mem exec('dbcc inputbuffer('+@blk+')') --insert into DBWareTest.dbo.sp_who_lock2Log exec('dbcc inputbuffer('+@blk+')') insert into CRS.dbo.sp_who_lock2Log(EventType,Parameters,EventInfo,createtime) select *,GETDATE() from #tmp_lock_mem end set @index=@index+1 end if @lock=0 begin set @index=1 while @index<=@count begin select @spid=spid,@blk=blk from #temp_who_lock where id=@index if @spid=0 begin select '引起阻塞的是:'+cast(@blk as varchar(10))+ '进程号,其执行的SQL语法如下' insert into CRS.dbo.sp_who_lock2LogForSPID select spid,blk,'引起阻塞的是:'+cast(@blk as varchar(10))+ '进程号,其执行的SQL语法如下',GETDATE() from #temp_who_lock where id=@index end else begin select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下' --dbcc inputbuffer(@spid) delete #tmp_lock_mem insert into #tmp_lock_mem exec('dbcc inputbuffer('+@spid+')') --insert into DBWareTest.dbo.sp_who_lock2Log exec('dbcc inputbuffer('+@spid+')') insert into CRS.dbo.sp_who_lock2Log(EventType,Parameters,EventInfo,createtime) select *,GETDATE() from #tmp_lock_mem insert into CRS.dbo.sp_who_lock2LogForSPID select spid,blk,'进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下',GETDATE() from #temp_who_lock where id=@index end --dbcc inputbuffer(@blk) delete #tmp_lock_mem insert into #tmp_lock_mem exec('dbcc inputbuffer('+@blk+')') --insert into DBWareTest.dbo.sp_who_lock2Log exec('dbcc inputbuffer('+@blk+')') insert into CRS.dbo.sp_who_lock2Log(EventType,Parameters,EventInfo,createtime) select *,GETDATE() from #tmp_lock_mem set @index=@index+1 end end drop table #temp_who_lock return 0 end
测试环境：
CREATE procedure sp_who_lock as begin declare @spid int declare @blk int declare @count int declare @index int declare @lock tinyint set @lock=0 create table #temp_who_lock ( id int identity(1,1), spid int, blk int ) if @@error<>0 return @@error insert into #temp_who_lock(spid,blk) select 0 ,blocked from (select * from master..sysprocesses where blocked>0)a where not exists(select * from master..sysprocesses where a.blocked =spid and blocked>0) union select spid,blocked from master..sysprocesses where blocked>0 if @@error<>0 return @@error select @count=count(*),@index=1 from #temp_who_lock if @@error<>0 return @@error if @count=0 begin select '没有阻塞和死锁信息' return 0 end while @index<=@count begin if exists(select 1 from #temp_who_lock a where id>@index and exists(select 1 from #temp_who_lock where id<=@index and a.blk=spid)) begin set @lock=1 select @spid=spid,@blk=blk from #temp_who_lock where id=@index select '引起数据库死锁的是: '+ CAST(@spid AS VARCHAR(10)) + '进程号,其执行的SQL语法如下' select @spid, @blk dbcc inputbuffer(@spid) dbcc inputbuffer(@blk) end set @index=@index+1 end if @lock=0 begin set @index=1 while @index<=@count begin select @spid=spid,@blk=blk from #temp_who_lock where id=@index if @spid=0 select '引起阻塞的是:'+cast(@blk as varchar(10))+ '进程号,其执行的SQL语法如下' else select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '进程号SPID：'+ CAST(@blk AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下' dbcc inputbuffer(@spid) dbcc inputbuffer(@blk) set @index=@index+1 end end drop table #temp_who_lock return 0 end GO
