51工具盒子查看当前用户查看当前用户
* select system_user
检查SQL Agent是否开启
* IF EXISTS (
* SELECT TOP 1 1
* FROM sys.sysprocesses
* WHERE program_name = 'SQLAgent - Generic Refresher'
* )
* SELECT 'Running'
* ELSE
* SELECT 'Not Running'
查看是否做了镜像
* select
* a.database_id
* ,a.name 数据库名称
* ,case when b.mirroring_guid is null then '否' else '是' end 是否镜像
* ,b.mirroring_partner_name 镜像服务器名称
* from
* [sys].[databases] a
* left join [sys].[database_mirroring] b on a.database_id=b.database_id
分离数据库
* USE master;
* EXEC sp_detach_db @dbname = 'test';#test指需要分离的数据库
附加数据库
* SELECT type_desc, name, physical_name from sys.database_files;#查看物理数据库文件的位置
* #使用带 FOR ATTACH 子句的 CREATE DATABASE 语句附加之前分离的test数据库
* CREATE DATABASE test
* ON (FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA\test.mdf'),
* (FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA\test_log.ldf')
* FOR ATTACH;
查看主从复制关系
* SELECT * FROM msdb.dbo.sysjobs；
* SELECT
* serverproperty('servername') AS ServerName,
* CASE
* WHEN serverproperty('servername') = '主服务器名称' THEN '主服务器'
* ELSE '从服务器'
* END AS ServerRole
* #也可以通过以下语句来查询
* SELECT * FROM sys.objects WHERE name = 'MSreplication_options'
查看实例级别的信息
* select SERVERPROPERTY ('test')
查看实例级别的某个参数allow updates的配置
* select * from sys.configurations where name='allow updates'
查询当前数据库的所有架构范围的对象
* select * from sys.all_objects
查询当前数据库的所有对象
* select * from sys.sysobjects
在当前数据库下可以查询到所有数据库信息，包含是否on状态
* select * from sys.databases
查询所有数据库信息
* select * from sys.sysdatabases
查询当前数据库下所有正在SQL Server 实例上运行的进程的相关信息
* select * from sys.sysprocesses
监控日志空间
* DBCC SQLPERF (LOGSPACE)
查看数据库各种设置
* select name,State,user_access,is_read_only,recovery_model from sys.databases
查询当前数据库是否有会话
* select DB_NAME(dbid),* from sys.sysprocesses where dbid=db_id('test')
查询当前阻塞的所有请求
* SELECT session_Id,spid,ecid,DB_NAME (sp.dbid),nt_username,er.status,wait_type,
* [Individual Query] =SUBSTRING (qt.text,er.statement_start_offset / 2,
* ( CASE
* WHEN er.statement_end_offset = -1
* THEN
* LEN (CONVERT (NVARCHAR (MAX), qt.text)) * 2
* ELSE
* er.statement_end_offset
* END
* - er.statement_start_offset)
* / 2),
* qt.text,program_name,Hostname,nt_domain,start_time
* FROM sys.dm_exec_requests er
* INNER JOIN sys.sysprocesses sp ON er.session_id = sp.spid
* CROSS APPLY sys.dm_exec_sql_text (er.sql_handle) AS qt
* WHERE session_Id > 50 /* Ignore system spids.*/
* AND sp.blocked>0 AND session_Id NOT IN (@@SPID)
查看活动线程执行的sql语句,并生成批量杀掉的语句
* select 'KILL '+CAST(a.spid AS NVARCHAR(100)) AS KillCmd,REPLACE(hostname,' ','') as hostname ,replace(program_name,' ','') as program_name
* ,REPLACE(loginame, ' ', '') AS loginame, db_name(a.dbid) AS DBname,spid,blocked,waittime/1000 as waittime
* ,a.status,Replace(b.text,'''','''') as sqlmessage,cpu
* from sys.sysprocesses as a with(nolock)
* cross apply sys.dm_exec_sql_text(sql_handle) as b
* where a.status<>'sleeping' AND a.spid<>@@SPID
查看数据库的最近备份信息
* SELECT database_name,type,MAX(backup_finish_date) AS backup_finish_date FROM msdb.dbo.backupset GROUP BY database_name,type ORDER BY database_name,type
* 备注：D 表示全备份，i 表示差异备份，L 表示日志备份
查看备份进度
* SELECT DB_NAME(database_id) AS Exec_DB
* ,percent_complete
* ,CASE WHEN estimated_completion_time < 36000000
* THEN '0' ELSE '' END + RTRIM(estimated_completion_time/1000/3600)
* + ':' + RIGHT('0' + RTRIM((estimated_completion_time/1000)%3600/60), 2)
* + ':' + RIGHT('0' + RTRIM((estimated_completion_time/1000)%60), 2) AS [Time Remaining]
* ,b.text as tsql
* ,*
* FROM SYS.DM_EXEC_REQUESTS
* cross apply sys.dm_exec_sql_text(sql_handle) as b
* WHERE command LIKE 'Backup%' --and database_id=db_id('cardorder')
* --OR command LIKE 'RESTORE%'
* ORDER BY 2 DESC
查询always on状态是否正常
* select dc.database_name, d.synchronization_health_desc, d.synchronization_state_desc, d.database_state_desc from sys.dm_hadr_database_replica_states d join sys.availability_databases_cluster dc on d.group_database_id=dc.group_database_id and d.is_local=1
查看mirror镜像信息
* SELECT
* db_name(database_id),
* mirroring_state_desc,
* mirroring_role_desc,
* mirroring_partner_name,
* mirroring_partner_instance
* FROM sys.database_mirroring
查看每个数据库实例的数据量大小
* SELECT
* DB_NAME(db.database_id) DatabaseName,
* (CAST(mfrows.RowSize AS FLOAT)*8)/1024 RowSizeMB,
* (CAST(mflog.LogSize AS FLOAT)*8)/1024 LogSizeMB,
* (CAST(mfstream.StreamSize AS FLOAT)*8)/1024 StreamSizeMB,
* (CAST(mftext.TextIndexSize AS FLOAT)*8)/1024 TextIndexSizeMB
* FROM sys.databases db
* LEFT JOIN (SELECT database_id, SUM(size) RowSize FROM sys.master_files WHERE type = 0 GROUP BY database_id, type) mfrows ON mfrows.database_id = db.database_id
* LEFT JOIN (SELECT database_id, SUM(size) LogSize FROM sys.master_files WHERE type = 1 GROUP BY database_id, type) mflog ON mflog.database_id = db.database_id
* LEFT JOIN (SELECT database_id, SUM(size) StreamSize FROM sys.master_files WHERE type = 2 GROUP BY database_id, type) mfstream ON mfstream.database_id = db.database_id
* LEFT JOIN (SELECT database_id, SUM(size) TextIndexSize FROM sys.master_files WHERE type = 4 GROUP BY database_id, type) mftext ON mftext.database_id = db.database_id
查询总耗CPU最多的前3个SQL，且最近5天出现过
* SELECT TOP 3
* total_worker_time/1000 AS [总消耗CPU 时间(ms)],execution_count [运行次数],
* qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 时间(ms)],
* last_execution_time AS [最后一次执行时间],max_worker_time /1000 AS [最大执行时间(ms)],
* SUBSTRING(qt.text,qs.statement_start_offset/2+1,
* (CASE WHEN qs.statement_end_offset = -1
* THEN DATALENGTH(qt.text)
* ELSE qs.statement_end_offset END -qs.statement_start_offset)/2 + 1)
* AS [使用CPU的语法], qt.text [完整语法],
* qt.dbid, dbname=db_name(qt.dbid),
* qt.objectid,object_name(qt.objectid,qt.dbid) ObjectName
* FROM sys.dm_exec_query_stats qs WITH(nolock)
* CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qt
* WHERE execution_count>1 and last_execution_time>dateadd(dd,-5,getdate())
* ORDER BY total_worker_time DESC
查看当前最耗资源的10个SQL及其spid
* SELECT TOP 10
* session_id,request_id,start_time AS '开始时间',status AS '状态',
* command AS '命令',d_sql.text AS 'sql语句', DB_NAME(database_id) AS '数据库名',
* blocking_session_id AS '正在阻塞其他会话的会话ID',
* wait_type AS '等待资源类型',wait_time AS '等待时间',wait_resource AS '等待的资源',
* reads AS '物理读次数',writes AS '写次数',logical_reads AS '逻辑读次数',
* row_count AS '返回结果行数'
* FROM sys.dm_exec_requests AS d_request
* CROSS APPLY
* sys.dm_exec_sql_text(d_request.sql_handle) AS d_sql
* WHERE session_id>50
* ORDER BY cpu_time DESC
* --前50号session_id一般是系统后台进程，sys.dm_exec_requests的status显示为background
always on
查看集群各节点的信息，包含节点成员的名称，类型，状态，拥有的投票仲裁数
* SELECT * FROM sys.dm_hadr_cluster_members;
查看集群各节点的信息，包含节点成员的名称，节点成员上的sql实例名称
* select * from sys.dm_hadr_instance_node_map
查看WSFC(windows server故障转移群集)的信息，包含集群名称，仲裁类型，仲裁状态
* SELECT * FROM SYS.dm_hadr_cluster;
查看AG名称
* select * from sys.dm_hadr_name_id_map
* 查看集群各节点的子网信息，包含节点成员的名称，子网段，子网掩码
* SELECT * FROM sys.dm_hadr_cluster_networks;
查看侦听ip
* select * from sys.availability_group_listeners;
查看主从各节点的状态
复制
* select d.is_local,dc.database_name, d.synchronization_health_desc,
* d.synchronization_state_desc, d.database_state_desc
* from sys.dm_hadr_database_replica_states d
* join sys.availability_databases_cluster dc
* on d.group_database_id=dc.group_database_id;
查看辅助副本(传说中的从库)延迟多少M日志量
* select db_name(database_id),log_send_queue_size/1024 delay_M,*
* from sys.dm_hadr_database_replica_states where is_primary_replica=0;
查看DDL操作的记录
* select * from Sys.traces
文中的概念来源于网络，如有侵权，请联系我删除。
