Integer 

Dynamic. Scope = ALTER SYSTEM. 

0 

0 to value of LICENSE_MAX_SESSIONS parameter 

Multiple instances can have different values. 

LICENSE_SESSIONS_WARNING specifies a warning limit on the number of concurrent user sessions. When this limit is reached, additional users can connect, but Oracle writes a message in the alert file for each new connection. Users with RESTRICTED SESSION privilege who connect after the limit is reached receive a warning message stating that the system is nearing its maximum capacity.

If this parameter is set to zero, no warning is given as you approach the concurrent usage (session) limit. If you set this parameter to a nonzero number, you should also set LICENSE_MAX_SESSIONS (see "LICENSE_MAX_SESSIONS").

See Also: Oracle8i Administrator's Guide for more information on setting this parameter.