如果将副本写入镜像日志路径时发生问题，那么DB2将在管理通知日志中写入消息，指出已经碰到错误。
If there is a problem writing to any log path, DB2 will write a message in the administration notification log stating that an error has been encountered.
例如，常常会出现文件访问问题或VXML文件路径录入错误。
For example, it's common to run into file-access problems or typos in the VXML file path.
doWork方法会提供一个错误代码，表示这些故障发生的路径，还把问题原因作为链接的异常提供。
An error code is provided to indicate which of these failure paths occurred, and the cause of the problem is provided as a linked exception.
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