Creating the AliasDB and NETUsers Files

After ALLBASE/SQL has been installed on both the clien t and the server, the AliasDB and NETUsers ￿les m ust be created using NETUtil. Adding the ￿rst pro￿le to the AliasDB or NETUsers ￿le automatically creates the respectiv e ￿le. These pro￿les allow speci￿ed users on the client to access particular DBEn vironments on the server.

As system administrator on the clien t, you invoke NETUtil and use the ADD ALIAS command to add an alias pro￿le to the AliasDB ￿le. ADD ALIAS prompts y ou for details about the speci￿c DBEn vironment to be accessed. Use ADD ALIAS to add more alias pro￿les to the AliasDB ￿le as needed.

As system administrator on the serv er, you invoke NETUtil and use the ADD USER command to add a user pro￿le to the NETUsers ￿le. ADD USER prompts y ou for details about the speci￿c user who will be accessing the remote DBEn vironment. Use ADD USER to add more user pro￿les to the NETUsers ￿le as needed.

For step-by-step instructions to create the AliasDB and NETUsers ￿les, refer to the \Setting Up ALLBASE/NET" chapter.

The Listener

The listener on the serv er provides three functions: It listens for connection requests.

It validates the serv er login name.

It sets up a direct comm unication line between the client and server.

The listener monitors a speci￿ed datacomm port for an y incoming connection requests. When it receives a request, it validates the serv er login name for the user on the clien t and then creates a database process for that user. The listener redirects comm unications so that the user and the database process comm unicate directly with one another o ver the network. It then resumes listening for more connection requests.

You manually start the listener on the serv er after ALLBASE/SQL has been installed. When you stop running the listener, no further connection requests are accepted. Ho wever, any remote database activit y that is already in progress will not be a￿ected and will terminate normally.

Listener and network status and errors are recorded in a listener log ￿le (HPDANSLG.PUB.SYS) that y ou can check in the event of problems with remote access. The listener m ust not be running for this to w ork.

For instructions on starting and using the listener and an example of a listener log ￿le, refer

to \Setting Up ALLBASE/NET on an MPE/iX Serv er" in the \Setting Up ALLBASE/NET" chapter.

Getting Started 1-5