SQL> show parameter session

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

java_max_sessionspace_size integer 0

java_soft_sessionspace_limit integer 0

license_max_sessions integer 0

license_sessions_warning integer 0

logmnr_max_persistent_sessions integer 1

session_cached_cursors integer 20

session_max_open_files integer 10

sessions integer 170

shared_server_sessions integer

SQL> alter system set processes=300 scope=spfile;

System altered

SQL> alter system set sessions=335 scope=spfile;