Sentinel sets a default limit of 65536 open files for the Sentinel processes. This is sufficient for most installations. However, there might be some scenarios that may cause the Sentinel server to need more open files, such as running a large number of searches or reports concurrently, or running searches and reports that span unusually large time ranges. In such cases you might consider increasing the default open files limit to allow more than 65536 open files.
NOTE:For optimal performance, do not decrease the default limit.
Perform the following steps to change the open file limits:
Log in to the Sentinel server as the root user.
Open the /etc/security/limits.conf file.
Change the value in the following lines:
novell soft nofile 65536
novell hard nofile 65536
NOTE:Setting the soft limits is optional, however, setting the hard limits is mandatory.
Save the changes.
Restart the Sentinel server.