案例描述：
今天遇到一个很有意思的SQL Server作业报错告警，作业出错的详细信息如下：
Date 2021/6/23 12:34:00
Log Job History (YourSQLDba_BlockingSQL_Alert)
Step ID
Server xxxxx
Job Name YourSQLDba_BlockingSQL_Alert
Step Name
Duration 00:00:06
Sql Severity 0
Sql Message ID 0
Operator Emailed
Operator Net sent
Operator Paged
Retries Attempted 0
Message
The job failed. Unable to determine if the owner (xxx\xx) of job YourSQLDba_BlockingSQL_Alert has server access (reason: Could not obtain information about Windows NT group/user 'xxx\xxxx', error code 0x251e. [SQLSTATE 42000] (Error 15404)).