sqlserver中系统进程阻塞了任务怎么办
时间: 2024-06-09 22:05:25 浏览: 136
利用sys.sysprocesses检查SqlServer的阻塞和死锁
当在SQL Server中执行任务时遇到阻塞,可以通过以下步骤解决:
1. 查找阻塞进程:使用以下命令查找正在运行的进程和被阻塞的进程:
```
SELECT
L.request_session_id AS SPID,
DB_NAME(L.resource_database_id) AS DatabaseName,
O.Name AS LockedObjectName,
P.object_id AS LockedObjectId,
L.resource_type AS LockedResource,
L.request_mode AS LockType,
ST.text AS SqlStatementText,
ES.login_name AS LoginName,
ES.host_name AS HostName,
TST.is_user_transaction as IsUserTransaction,
AT.name as TransactionName,
CN.auth_scheme as AuthenticationMethod
FROM sys.dm_tran_locks L
JOIN sys.partitions P ON P.hobt_id = L.resource_associated_entity_id
JOIN sys.objects O ON O.object_id = P.object_id
JOIN sys.dm_exec_sessions ES ON ES.session_id = L.request_session_id
JOIN sys.dm_exec_connections CN ON CN.session_id = ES.session_id
JOIN sys.dm_tran_session_transactions TST ON ES.session_id = TST.session_id
JOIN sys.dm_tran_active_transactions AT ON TST.transaction_id = AT.transaction_id
CROSS APPLY sys.dm_exec_sql_text(CN.most_recent_sql_handle) AS ST
WHERE resource_database_id = DB_ID()
```
2. 结束阻塞进程:根据查询结果中的SPID,使用以下命令结束阻塞进程:
```
KILL <SPID>
```
3. 优化查询语句:如果阻塞问题由查询语句引起,则需要分析查询语句并进行优化,以减少阻塞的可能性。可以使用SQL Server Profiler或Extended Events等工具来分析查询语句并查找潜在的性能问题。
4. 调整事务隔离级别:如果阻塞问题由并发事务引起,则可以考虑调整事务隔离级别,例如将隔离级别降低为READ COMMITTED。
5. 增加硬件资源:如果阻塞问题由资源瓶颈引起,则可以考虑增加硬件资源,例如增加CPU、内存或磁盘容量等。
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