The user cannot log on because the resource is exhausted.

Problem:

If the resources are exhausted, the user will not be able to access it, whether it is remote SSH or Su. See the following situation:

[Oracle @ ZY ~] $ SSH 172.16.1.13

Write failed: broken pipe

[Zhuying @ ZY ~] $ Su-Oracle

Password:
Su: cannot set user ID: Resource temporarily unavailable

Solution:

Finally, only some processes can be killed to enter, restart the corresponding application, and release resources ~

Org. Apache. tomcat. util. threads. threadpool logfull

Subsequent optimization scheme:

System Optimization