Profiles in SAP

Startup Profile

Startup profile consists of startup parameters like

Starting Database
Starting Message server
Dispatcher+work
Do not modify these parameters under any circumstances on OS level.

Default Profile

It is used to provide global parameters for all instances, buffer parameters , security parameters(password,user restriction),Message server host,en queue host.

Instance Profile

This is specific to instance configuration such as work process , timeout parameters etc..


Starting Sequence
1. Start up profile is read by the system to start the engine by starting database,message server and dispatcher in central instance.
2. Start up profile is ready by the system to start the engine by starting(Disp+Work) on dialogue instance.
3.There will be only one default profile in the entire system which provides global values.
4.Instance specific profile -This is used to set the instance specific parameters.

Ex:How many profiles available on a system with 10 Dialogue instances

Total =11 (Including Central Instance)
             11X2 per instance (Start+instance)
             22
             22+1 (Default Instance)=23