diag background process

oracle 给的回复是

Diag background process will write to trace file in the background dump destination hence DIAG backgroud process
take high I/O.
This should be normal and not a worry.

Diag process writing to trace file doesn't always indicate a problem.
The real impact of the problem can be seen only after reviewing the Alert logs.
However, If you are not facing any hang / shutdown with database then you can ignore it.


DIAG并不总是因为产生问题而生成trace 文件，
出现问题会在alert log文件中显示
因此如果没有出现hang 或者宕机的情况，是可以被忽略的。