* workprocesses(DVEBMGS) mean to perform differn. type of work in syst.
as per user
action wp is assigned by dispatcher
*we can configure no.of wp according to the situation. status of wp
running/wait/sleep/hold/error/stop/PRIV
A work process consists of a screen processor, the ABAP interpreter, the database
interface and the task handler that calls these programs
Dialog WP = used to handle users interactive queries/requests and process it. if
its occupied users forced to wait.
BG WP = which can be executed without user interaction
UPD WP = responsible for writing changes/updating records in tables in
database/commit.
spool = Respo. for O/P req/print request
ENQUE WP = Respo. fr managing LOCKS(sm12) for data consistency
Gateway 33(tcode SMGW)= allow only authorized connections b/w sap & ext.syst.(for
more security add reginfos/secinfo)
ICM is a part of sap kernel act as interface b/w internet &ABAP/JAVA sys
KERNEL = usr/sap/sid/sys/exe
Kernel provides appl. related runtime executables for sap system/resp. for basic
functionalities.disptcher,mssg srv, start/stopsap/r3trans
In Linux, at end we have torun command in cdexe = ./saproot.sh (this will set
permissions for db tools/icmbnd permiss.
./saproot.sh is the script to assign permissions to all executable programs in
kernel
SAPCPE is the utility program that runs to copy executables from global direc.to
local direc of each instances.
problem during kernel upgrdes- syst won't restart -when we stop sap services/syst
ram memory is not completelyreleased
so while start,no enough memory for programs to load. so we need to take reboot of
the OS.
In Linux, cleanipc <inst no.> remove command is used to clean memory
or read content info to check possibe problems in marketplace
PROFILES in SAP
* It is operating sys file that contains parameteres basically configurations info
of instances.
Start Pro
Instance Pr (ASCS PRO & PAS)
Default Pro.
RZ
