Multiple stations, Multiple Servers Btrieve Problems !!!!??

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1 total messages Started by Pierre Ukelo Tue, 19 Apr 1994 18:28

#74

Author: Pierre Ukelo
Date: Tue, 19 Apr 1994 18:28

96 lines
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Hi guys,

I got a big question for you (I think it's a big one!).

The network configuration we have is pretty complex; several
workstations running Btrieve-client Applications and two Btrieve
Servers. Between the servers we have a high-speed communication
link (T1).
We use Btrieve 5.1 files format and the Btrieve NLM are the 6.1
running in the Pre-6.X mode on Netware 3.11 server.


The "graphic" below should help to make it easier to understand.




	Workstation                Workstation			...
    Btrieve-Application	       Btrieve-Application                :
	   ^                           ^                          :
	   |                           |                          :
	   |                           |                          :
	   |                           |                          :
	   |                           |                          :
	   v                           v                          :  Local
	   =====================================.....             :
			"                                         :  Network
			"                                         :
			"                                         :
			"                                         :
			"                                         :
		  NetWare Server 1                                :
		    Btrieve NLM                                   :
		   Btrieve Files                                  :
			||                                      ...
			||
			||
			|| T1
			||
			||                                      ...
		  NetWare Server 2                                :
		    Btrieve NLM                                   :
		   Btrieve Files                                  :
			"                                         :
			"                                         :
			"                                         :
			"                                         :  Local
	   =====================================.....             :
	   ^                           ^                          :  Network
	   |                           |                          :
	   |                           |                          :
	   |                           |                          :
	   |                           |                          :
	   v                           v                          :
	Workstation                Workstation			  :
    Btrieve-Application	       Btrieve-Application                :
								...



Each Workstation Application access Btrieve files on the Server 1
***_AND_***   Server 2.


The problems we got don't appear all time, and we have some trouble
to try to reproduce them.

Our biggest trouble has this configuration:

Running a Btrieve application with nobody on the network, everything
goes fine. (In fact everything goes fine if the system doesn't have
the T1 link). One other person is logged on somewhere on the network
and we have some weird Btrieve error like "Key value not found",
"File Position incorrect", "End of File" .... We found out that the
Position Block seems to be corrupted if somebody else is on the network.


The questions I have are:

1.	Have you had this kind of troubles ? Any proposed
	solutions ?

2.	How does the workstation Brequester know which Btrieve NLM
	to communicate with ?

3.	Any special parameter with the Brequester ?

3.	Any suggestions ?



Thanks for your help.



Pierre

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