If you see the message Exception processing IdentityService_ServerPage.jsp on the 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 the /etc/profile.local file with the ulimit value, such as:
ulimit -n 4096
You can make changes to /etc/security/limits.conf file with a line just to change the limit for a specific user. In this case: novlwwuser. Add the following line:
novlwww soft nofile [new limit]