SQLServer 查询数据死锁语句

SQLServer 查询数据死锁语句

我们可以通过以下SQL 语句用来查询，当前数据中存在的死锁语句，定位数据库出现死锁的根本原因。

--每秒死锁数量

SELECT *
FROM sys.dm_os_performance_counters
WHERE counter_name LIKE 'Number of Deadlocksc%';

--查询当前阻塞

WITH CTE_SID ( BSID, SID, sql_handle )
AS ( SELECT blocking_session_id ,
session_id ,
sql_handle
FROM sys.dm_exec_requests
WHERE blocking_session_id <> 0
UNION ALL
SELECT A.blocking_session_id ,
A.session_id ,
A.sql_handle
FROM sys.dm_exec_requests A
JOIN CTE_SID B ON A.SESSION_ID = B.BSID
)
SELECT C.BSID ,
C.SID ,
S.login_name ,
S.host_name ,
S.status ,
S.cpu_time ,
S.memory_usage ,
S.last_request_start_time ,
S.last_request_end_time ,
S.logical_reads ,
S.row_count ,
q.text
FROM CTE_SID C
JOIN sys.dm_exec_sessions S ON C.sid = s.session_id
CROSS APPLY sys.dm_exec_sql_text(C.sql_handle) Q
ORDER BY sid

通过这个语句可以看到造成死锁的进程ID和相关的SQL语句。