On initial startup, the ODBC Manager library waits until the RPC Manager has started (\RPCManager\Started). If this service fails to start, the ODBC Manager library will be prevented from starting.
After the RPC Manager has started, the ODBC Manager library makes a call to a global system function “\ODBCSetup()”. This may be declared in your Appmod.SRC file and may function as either a subroutine or a launched module. The purpose of this module is to perform any application specific tasks that must occur before the ODBC Manager library is started.