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sqlserver中查找长时间未提交事务

Jun 07, 2016 pm 03:51 PM
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欢迎进入Windows社区论坛,与300万技术人员互动交流 >>进入 因为也从sys.dm_tran_session_transactions的第一个查询中得知事务ID,所以可以使用sys.dm_tran_active_transactions来了解更多事务本身的内容 代码如下: select transaction_begin_time, case tra

欢迎进入Windows社区论坛,与300万技术人员互动交流 >>进入

 

  因为也从sys.dm_tran_session_transactions的第一个查询中得知事务ID,所以可以使用sys.dm_tran_active_transactions来了解更多事务本身的内容

  代码如下:

  select transaction_begin_time,

  case transaction_type

  when 1 then 'Read/Write transaction'

  when 2 then 'Read-Only transaction'

  when 3 then 'System transaction'

  when 4 then 'Distributed transaction'

  end tran_Type,

  case transaction_state

  when 0 then 'not been comoletely initaialiaed yet'

  when 1 then 'initaialiaed but ha notstarted'

  when 2 then 'active'

  when 3 then 'ended (read-only transaction)'

  when 4 then 'commit initiated for distributed transaction'

  when 5 then 'transaction prepared and waiting resolution'

  when 6 then 'commited'

  when 7 then 'being rolled back'

  when 0 then 'been rolled back'

  end transaction_state

  from

  sys.dm_tran_active_transactions

  where transaction_ID=455520

  代码如下:

  /*结果:

  transaction_begin_time tran_Type transaction_state

  2010-12-24 14:05:29.170 Read/Write transaction active

  */

  小结:这里演示了使用DMV 排除故障和调查长时间的活动事务的一般技巧。基本步骤如下:

  1、查询sys.dm_tran_session_transactions获取会话ID和事务ID之间的映射。

  2、查询sys.dm_exec_connections和sys.dm_exec_sql_text查找会话最新执行的命令(most_recent_sql_Handle列)

  3、最后,查询sys.dm_tran_active_transactions确定事务被打开了多少时间、事务的类型和事务的状态。

  使用这个技巧可以回到应用程序去查明调用的被抛弃的事务(打开但从未提交)以及那些运行时间太长或对于应用程序来说是不必要的不恰当事务。

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sqlserver中查找长时间未提交事务

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