Can anyone tell me what is Server and Instance in sap,wat
is exact meaning of that?

Answer Posted / sanjay

Instance could be defined as a combination of one or more
process addition with memory allocation. it might be central
instance, dialog instance or database instance. each n every
instance have certain number of work processes with instance
specific memory area.
dispatcher and workprocess could be a part of instance but
not defined as a complete instance without memory.

server comes from the logic of parent and child relationship
in between two applications. one the parent application is
known as domain server, and others child applications are
known as clients, and managed from the server.

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