Because the PING monitor opens files to execute the icmp.exe variable, there is a possibility that Uptime Infrastructure Monitor consumes all of the available file handles for its user.

Configure ulimit settings in newer Linux distributions via the following method to avoid this issue:

Edit the /etc/security/limits.conf file. 
Add the following line: uptime soft nofiles 4096. 
Restart uptime_core service.

To verify the number of open files for the Java process on Linux:

ps -f -u uptime | grep java
Get the PID for java and insert below.
# lsof | grep <PID> | wc -l
If this is more than the number of files allowed to the user, we could be broken.
# ulimit -n
Shows the number of files the user can get (need to be logged in as the Uptime user).
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