Dispatcher
Distributes the requests to the work processes ,if all
processes are busy then request stored in Dispatcher queue.
Work process :Executes Abap code
Message server: is used to exchange messages in SAP
netweaver as ABAP and to balance the load in the SAP system with sapnetweaver
as abap and sapnetweaver as abap+java
Java server processes:are responsible for processesing java
servlets and so on.
SAP System that contains SAP netweaver as java has a central services instance that contains a java message server and
enqueue server .The java message server is used to
exchange messages in sap netweaver as
java t balance the load in sap systems without an abap stack.
The java eneque server responsible for lock management in
sap netweaver as java.
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