RFC calls can use load
balancing. If the RFC connection string uses the notation ASHOST= it is a fixed
application server. If it uses MSHOST= it is load balancing via a message
server.
When the user logs
on via load balancing the RFC normally uses load balancing too, since GuiXT uses
the connection string from SAP GUI.
You can specify a
different connection string in guixt.ini and (for example) use a fixed
application server for all RFC calls, or use load balancing even if the user has
logged on to a fixed application server.
With
Tools->Check RFC connection in GuiXT you can see the connection string that
actually has been used by GuiXT. You may also use Options->Trace RFC.
Since GuiXT keeps
the RFC connection for several RFC calls the application server will not change
before the RFC session is closed, even with load balancing configured. You can
use ProcessingOption RfcDisconnect="On" in order to start a new RFC
session with each dialog step. But this will result in a workload increase since
the RFC logon is required for each new step. For more details please see the
ProcessingOption keyword documentation.
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