--
查找被阻塞进程
Select
*
from
master..sysprocesses
where
dbid
=
9
and
blocked
>
0
--
查找阻塞头进程
select
*
from
master..sysprocesses p
where
dbid
=
9
and
blocked
<=
0
and
exists
(
select
1
from
master..sysprocesses
where
blocked
=
p.spid)
--
查找等待时间长的进程
Select
*
from
master..sysprocesses
where
dbid
=
9
order
by
waittime
desc
--
进程正在执行的 SQL 语句
dbcc
inputbuffer(
61
);
--
中止进程
--
kill 177
--
定位消耗cpu,io 最高的进程信息
select
spid,dbid,cpu,physical_io,login_time,last_batch,status,
hostname,program_name,hostprocess,cmd,nt_username
from
sysprocesses
where
dbid
=
9
order
by
cpu,physical_io
desc
;
--
select OBJECT_NAME(1962490070)
--
select db_id('CTI')
--
IO消耗大的SQL
SELECT
TOP
20
[
Total IO
]
=
(qs.total_logical_reads
+
qs.total_logical_writes)
,
[
Average IO
]
=
(qs.total_logical_reads
+
qs.total_logical_writes)
/
qs.execution_count
, qs.execution_count
,
SUBSTRING
(qt.
text
,(qs.statement_start_offset
/
2
)
+
1
,
((
CASE
WHEN
qs.statement_end_offset
=
-
1
THEN
LEN
(
CONVERT
(
NVARCHAR
(
MAX
), qt.
text
))
*
2
ELSE
qs.statement_end_offset
END
-
qs.statement_start_offset)
/
2
)
+
1
)
AS
[
Individual Query
]
, qt.
text
AS
[
Parent Query
]
,
DB_NAME
(qt.dbid)
AS
DatabaseName
, qp.query_plan
FROM
sys.dm_exec_query_stats qs
CROSS
APPLY sys.dm_exec_sql_text(qs.sql_handle)
as
qt
CROSS
APPLY sys.dm_exec_query_plan(qs.plan_handle) qp
ORDER
BY
[
Total IO
]
DESC
--
连接数总数
SELECT
COUNT
(session_id)
AS
session_count
FROM
sys.dm_exec_sessions
where
database_id
=
9
--
各服务器连接数
select
host_name
,login_name,
count
(session_id)
FROM
sys.dm_exec_sessions
where
database_id
=
9
group
by
host_name
, login_name
order
by
host_name
