D(DIALOG) :- It is responsible for
all interactive task for the system ,every business process executed in it .If
there are no DIALOG free any time then system will not up.It execute
one DIALOG at one time. rdisp/wp_no dia is the profile parameter used In it.
E(ENQUEUE) :- Responsible for
lock management system and it is used to
ensure data integrity .Commonly only 1
enqueue work process for single SAP system .Configure up to 4 enqueue work process
for better performance .rdisp/wp_ no_eng is the profile
parameter used in it.
V(UPDATE) :-It is used to modify the database requested by DIALOG
.For better performance we keep data on server. rdisp/wp_no_vb and rdisp/wp_no_vb2 show number of number
of update work process for V1 and V2 respectively. for V1 is time critical
process and V2 is less time critical process.
B(BACKGROUND) :- It is used to
running a long and time consuming job where large data retrieval is required
.It is basically used for batch job scheduling. rdisp/wp_no_btc is the profile
parameter used in it.
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