Load Balancing

[GeneK94583]

Does anyone know how SAP load balances across application servers? The way we have it setup, an SAP database server is designated on the saplogon.ini as the initial entry point for all connections. Then somehow it is load balanced among the application servers. Does anyone know what factors are involved in this process and how is it done?

Among other issues, we are hoping to solve a load balance 88 error.

Thank you!!

 

[Guest_imported]

As far as I know, the load balance is done according to two
factors:
* number of users connected
* response time
You can monitor these factors in transaction SMLG,
goto -> load distribution

regards

 

[GeneK94583]

Thank you for the reply. I checked the load distribution and it looks like the balancing is not being done very well. Our SAP environment looks like this:

database server
app server1
app server2
app server3

saplogon.ini MSsrvName points to the database server. Changing this gives load balancing errors. With a successful connection the user is placed on one of the three app servers. When I checked the load distribution, 1 & 2 app servers had about 1/3 of the users that the 3rd had. The response times were about 400-500 for 1 and 2, and 1500 for the 3rd app server. I'm lead to believe that load balancing is a service running on the database server, but it's not very efficient.

Does anyone know if this is a service that should be run on a stand alone box, or does it matter?

 

[Hunter007]

I accidently locked DDIC and SAP* account in Client 000 and 001, how can I unlock those. I don;t have any other accounts in those clients.