ORA-00019: maximum number of session licenses exceeded

ORA-00019: maximum number of session licenses exceeded

elated: 	<<View:V$LICENSE>>
                <<Parameter:LICENSE_SESSIONS_WARNING>>
                <<Parameter:LICENSE_MAX_USERS>>
        
  Users received ORA-19 if they are not allowed to connect.
  Eg:  ORA-19 "maximum number of session licenses exceeded"
        
  Messages are written to the alert log for each connect attempt made once 
  LICENSE_MAX_SESSIONS is reached.
  Eg: If the user has RESTRICTED SESSION privilege:
             "License maximum (10) exceeded, DBA logon allowed"

      If the user was refused from connecting:
             "Non-DBA logon denied; current logons equal maximum (10)"