PSAPPSRV, PSSAMSRV, PSMONITORSRV, and
PSWATCHSRV. When the application server is booted, the minimum number of
instances of the specified servers are started.
Tuxedo can also be configured
to spawn more instances of these servers on demand. All of the PeopleSoft
server processes (except PSWATCHSRV) make a persistent connection to the
database on startup.
Whenever a message passes between any
two processes in the application server, it is sent via a queue to which the receiving
process listens. Other information can pass between processes by being written
to a shared memory segment.
The
PIA servlet in PeopleTools runs in a JVM in the web server. Each PeopleSoft
operator is assigned to a thread in the JVM, which is the operator’s PeopleSoft
session. The thread connects to the application server domain via the Jolt
Server Listener (JSL), and the thread is then assigned to a Jolt Server Handler
(JSH). The JSL and JSH are very similar to the WSL and WSH, except that they
receive Java class requests.
