If you see the message Exception processing IdentityService_ServerPage.jsp on Administration Console, it is an indication that the system has run out of available file handles. You need to use the command line to increase the ulimit value (ulimit -n [new limit]), which sets the number of open file descriptors allowed.
To set this value permanently, you can create profile.local file with the ulimit value, such as:
ulimit -n 4096
Add profile.local to /etc/. For information about how to add a file, see Adding Configurations to a Cluster.
You can make changes to the limits.conf file with a line just to change the limit for a specific user. In this case: novlwwuser.
For information about how to modify a file, see Modifying Configurations.
Add the following line:
novlwww soft nofile [new limit]