Determine the maintenance services middleware host

The middleware that will be running the maintenance services is determined as follows:

• If a preferred middleware host has been specified, that middleware will perform the maintenance services.

• If a preferred middleware is not specified, then the first middleware to start up will handle the maintenance services.

• If the middleware that is currently handling the maintenance services stops running, then the next available middleware based on their startup order takes over the maintenance services.

The db_status table has the name of the most recent MES middleware to execute the maintenance services.

The preferred MES middleware host is specified using the Preferred MW Host setting for the DB/MW Communication component in the post-install Configurator application. For more information, see the MES Installation Guide or help.

All MES middleware hosts can handle transactions from client applications directed to the MES middleware from an MES middleware proxy.