sqlserver2008 使用系统用户作为job owner执行失败的bug

最近频繁出现使用job执行备份均失败，修改job 的owner为sa以后执行就ok了，不知其原因为何，错误如下：

The job failed.  The owner (test-zuoqujia\Administrator) of job Job_test_FULLBACKUP does not have server access.

最近有时间做了下研究，来自微软官网的说明如下：

• In SQL Server 2008 or SQL Server 2005, you create a job whose owner is a Windows user account.
• You run the job and the job works well.
• You restart the SQL Server Agent.
• You run the job again.

In this scenario, you may receive the following error message:

The job failed. The owner () of job <Job Name> does not have server access.

When SQL Server Agent starts, the job details will be loaded into the cache. However, when the job owner is a Windows user account, the agent may fail to find the job owner details in the cache and does not refresh the cache. Therefore, the job fails.

然后就不用多说了，解决方法就是打补丁包或者使用其他用户作为job owner啦。

更多官网内容详见：

http://support.microsoft.com/kb/969611/en-us/