Oracle A423961 - Manual (Page 142)

D – 8 Oracle7 Server Getting Started for Windows NT
NMP_MIN_CLIENTS
Operating System: Windows NT
SQL*Net: SQL*Net:
Default: 5
Legal Values: 1 to NMP_MAX_CLIENTS
NMP_MIN_CLIENTS is the number of listener threads that will be
pre–spawned by the server at startup.
Note: Setting this parameter to zero causes the parameter to
take its default value.
NMP_FREE_CLIENTS
Operating System: Windows NT
SQL*Net: Version 1.1 of SQL*Net Named Pipes
Default: 5
Legal Values: 1 to NMP_MAX_CLIENTS
NMP_FREE_CLIENTS is the minimum number of listener threads that
will be maintained by the server at any one time.
Note: Setting this parameter to zero causes the parameter to
take its default value.
NMP_SPAWN_INCREMENT
Operating System: Windows NT
SQL*Net: Version 1.1 of SQL*Net Named Pipes
Default: 5
Legal Values: 1 to NMP_MAX_CLIENTS
NMP_SPAWN_INCREMENT is the maximum number of listener
threads created at one time when listener thread creation is necessary.
When the number of listener threads falls below the value of
NMP_FREE_CLIENTS, new listener threads are generated in batches
with maximum size of NMP_SPAWN_INCREMENT. Fewer listener
threads are generated than required by NMP_SPAWN_INCREMENT if
fewer are required. A delay of length NMP_SPAWN_DELAY occurs
between the generation of each batch of listener threads.
Note: Setting this parameter to zero causes the parameter to
take its default value.