Dynamic Workload Console 9.x login or graphical view pages do not display

If you access the Dynamic Workload Console from a supported browser, the following error message is displayed:

java.io.IOException: Too many open files

Another symptom related to the same problem is the graphical view opening a blank page.

Cause:

The number of open files for the WebSphere Application Server Liberty Base user has reached its limit. You can check the maximum number of open files with the command:

ulimit -n

You can list the open files and sockets with the command:

lsof -p <process id>

Solution:

Increase the limit for the number of open files for the WebSphere Application Server Liberty Base user, with the command:

ulimit -n <number_of_open_files>

It is recommended to set the limit to 8000.

For additional details, see the WebSphere Application Server Liberty Base technote: Too Many Open Files error message.