Using the following SQL one can find the current number of processes and sessions connected and also max utilization so one can check if you need to increase the values of the parameter

SQL> select resource_name, current_utilization, max_utilization from v$resource_limit where resource_name in (‘processes’,’sessions’);

Output:
RESOURCE_NAME CURRENT_UTILIZATION MAX_UTILIZATION
—————————— ——————- —————
processes 146 196
sessions 157 210