On the SAS 
middle tier system, set ulimit settings in 
/etc/security/limits.conf for
                  the Installer user account that runs the SAS Web Application Server
                  processes.
                  
               
 
               
               For example, here are
                  ulimit settings added to /etc/security/limits.conf for
                  the Installer user account, sas:
                  
               
               
               sas - nofile 150000
sas - nproc  100000
sas - stack  10240
 
               
               The NPROC (max number
                  of processes) changes do not take effect unless /etc/security/limits.d/90-nproc.conf (Red
                  Hat Enterprise Linux 6) or /etc/security/limits.d/20-nproc.conf (Red
                  Hat Enterprise Linux 7) is also changed.
                  
               
               
               For example, to allow
                  100,000 processes on Red Hat Enterprise Linux 6, make the following
                  change to /etc/security/limits.d/90-nproc.conf: