sqlserver常用运维sql

1. sqlserver 检测sql

    SELECT top 10
        (total_elapsed_time / execution_count)/1000 N'平均时间ms'
        ,total_elapsed_time/1000 N'总花费时间ms'
        ,total_worker_time/1000 N'所用的CPU总时间ms'
        ,total_physical_reads N'物理读取总次数'
        ,total_logical_reads/execution_count N'每次逻辑读次数'
        ,total_logical_reads N'逻辑读取总次数'
        ,total_logical_writes N'逻辑写入总次数'
        ,execution_count N'执行次数'
        ,creation_time N'语句编译时间'
        ,last_execution_time N'上次执行时间'
        ,SUBSTRING(
            st.text,
            (qs.statement_start_offset/2) + 1,
            (
                (CASE statement_end_offset WHEN -1 THEN DATALENGTH(st.text) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2
            ) + 1
        ) N'执行语句'
        ,qp.query_plan
    FROM  sys.dm_exec_query_stats AS qs
    CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st
    CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp
    WHERE
        SUBSTRING(
            st.text,
            (qs.statement_start_offset/2) + 1,
            (
                (CASE statement_end_offset WHEN -1 THEN DATALENGTH(st.text) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2
            ) + 1
        ) not like '%fetch%'
    ORDER BY  total_elapsed_time / execution_count DESC;  

2. 死锁

    select
    request_session_id spid,
    OBJECT_NAME(resource_associated_entity_id) tableName
    from
    sys.dm_tran_locks
    where
    resource_type='OBJECT' 

    GRANT SELECT ON  sys.dm_tran_locks TO zabbix

3. 连接数

    SELECT count(1) as icount FROM
    [Master].[dbo].[SYSPROCESSES] WHERE [DBID] IN ( SELECT
    [DBID]
    FROM
    [Master].[dbo].[SYSDATABASES]
    WHERE
    NAME='JSTMBS'
    );

4. 数据文件大小

    select  convert(float,sum(size)) * (8192.0/1024.0)/1024.0/1024  from JSTMBS.dbo.sysfiles  

5. 查看作业 备份JSTMBS 的状态

    select top 1
    CASE HIST.run_status
        WHEN 0 THEN 'Failed' 
        WHEN 1 THEN 'Succeeded'  
        WHEN 2 THEN 'Retry'  
        WHEN 3 THEN 'Canceled'  
        END as status
    FROM msdb.dbo.sysjobs JOB
    INNER JOIN msdb.dbo.sysjobhistory HIST ON HIST.job_id = JOB.job_id
    WHERE
    JOB.name = '备份JSTMBS'
    and HIST.step_id =0
    ORDER BY HIST.run_date desc;

6. sqlserver 统计碎片

    select B.name,C.name,A.avg_fragmentation_in_percent from  sys.dm_db_index_physical_stats(DB_ID() ,object_id('WF_WorkItem') ,NULL,NULL,NULL) A,sysobjects B,sys.indexes  C
    where A.object_id = B.id  and A.object_id = C.object_id and C.index_id = A.index_id
    and C.name is not null
    and avg_fragmentation_in_percent > 90

7. 查看触发器
    SELECT tb2.name AS tableName,tb1.name AS triggerName FROM Sysobjects tb1 JOIN Sysobjects tb2 ON tb1.parent_obj=tb2.id
    WHERE tb1.type='TR';

8. 调试触发器
思路：创建存储过程执行update语句，debug
-- 新建触发器
    Create TRIGGER [dbo].[OverloadCaseInfoForupdate] ON [dbo].[GL_OverloadCaseInfo]
    for update
    AS
    DECLARE @CaseId varchar(50),  @num int
    select @CaseId=CaseId from inserted

    select @num=count(CaseId) from GL_OverloadCaseInfo where CaseId=@CaseId and (IsAccept=0 or IsAccept=2)

    if @num = 0
        begin
            ROLLBACK TRANSACTION
        end

-- 创建存储过程
    Create proc [dbo].[testtri]
    as
    begin
        update GL_OverloadCaseInfo set PlateColor='7' where CaseId='HZ9482f663ec7fb901643a9dbf163b9d'
    end

-- 调试
    点击对应的数据库，找到存储过程 testtri ，右键 执行存储过程，点击上面 “调试”，按F11,会进入触发器脚本。

9. 创建链接服务器

    EXEC sp_addlinkedserver 'DB name','','SQLOLEDB','xxx.xx.xx.xxx'
    EXEC sp_addlinkedsrvlogin 'DB name','false',NULL,'user','XXXXXX'