SQL Server 2008 [stored procedure] deadlock query and kill

Time:2020-3-29

1. In the use of database, deadlock may occur, causing the program to be unable to use normally

Create procedure [dbo].[sp_who_lock]
(
@Bkillpid bit = 0 — 0: query 1: end corresponding deadlock ID (may cause data exception)
)
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 ‘no blocking and deadlock information’
return 0
end
Declare @SBak Varchar(10)
while @index<[email protected]
begin
if exists(select 1 from #temp_who_lock a where id>@index and exists(select 1 from #temp_who_lock where id<[email protected] and a.blk=spid))
begin
set @lock=1
select @spid=spid,@blk=blk from #temp_who_lock where [email protected]
Select ’causes database deadlock by’ + cast (@ SPID as varchar (10)) + ‘process number. The executed SQL syntax is as follows’
select @spid, @blk
dbcc inputbuffer(@spid)
dbcc inputbuffer(@blk)
If @bKillPID =1
Begin
Set @SBak=CAST(@blk AS VARCHAR(10))
exec(‘Kill ‘[email protected])
Set @SBak=CAST(@spid AS VARCHAR(10))
exec(‘Kill ‘[email protected])
End
end
set @[email protected]+1
end
if @lock=0
begin
set @index=1
while @index<[email protected]
begin
select @spid=spid,@blk=blk from #temp_who_lock where [email protected]
if @spid=0
Select ’causes blocking by’ + cast (@ BLK as varchar (10)) + ‘process number. The executed SQL syntax is as follows’
else
Select ‘process number SPID:’ + cast (@ SPID as varchar (10)) + ‘blocked by’ + ‘process number SPID:’ + cast (@ BLK as varchar (10)) + ‘, the SQL syntax of the current process execution is as follows’
dbcc inputbuffer(@spid)
dbcc inputbuffer(@blk)

set @[email protected]+1
end
end
drop table #temp_who_lock
return 0
end
GO