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  • cannot be run because the QueueReader subsystem failed to load

    前阵子一数据库服务器的事务日志开始暴增,当时使用下面脚本检查发现该数据库的log_reuse_wait_desc 一直处于REPLICATION状态, 也就是说在事务复制过程中,与发布相关的事务仍未传递到分发数据库。刚好前一天有个同事配置了AWS的DMS相关作业。

     

    SELECT name,  log_reuse_wait_desc FROM sys.databases;

     

    找到具体作业检查发现,该作业的第二步出现了错误,LogReader服务启动失败了。如需截图所示:

     

    Message
     
    Unable to start execution of step 2 (reason: The LogReader subsystem failed to load [see the SQLAGENT.OUT file for details]; The job has been suspended).  The step failed.

    clip_image001[4]

     

     

    进一步检查SQL Server Agent的日志输出,发现是因为because the QueueReader subsystem failed to load

     

     

    clip_image002[4]

     

     

     

    Date       2018/11/15 14:54:41
    Log        SQL Server Agent (Archive #1 - 2018/11/20 9:11:00)
     
    Message
    [LOG] Step 2 of job 'xxxx' (0xE00DFF76D02DAD47920124DD907A412D) cannot be run because the LogReader subsystem failed to load.  The job has been suspended
     
     
     
    Date       2018/11/15 14:54:44
    Log        SQL Server Agent (Archive #1 - 2018/11/20 9:11:00)
     
    Message
    [LOG] Step 2 of job 'xxxx' (0x1BC045267CAE2F4A8C3E283921F40641) cannot be run because the QueueReader subsystem failed to load.  The job has been suspended

     

     

    使用下面脚本检查,发现子系统QueueReader的dll是存在的,刚好同事前一天配置AWS时,在SQL Server里面添加了Replication相关组件。而添加组件后,没有重启SQL Server Agent服务。重启SQL Server Agent服务后,问题解决!

     

     

    select * from msdb.dbo.syssubsystems

     

     

     

    参考资料:

     

    https://www.sqlservercentral.com/Forums/783200/Replication-subsystems-failed-to-load

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  • 原文地址:https://www.cnblogs.com/kerrycode/p/10001027.html
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