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Bernhard Buschinger · Guest

Hi all,

I have written a three-tier database application system (IB server,
DCOM-server as middle tier, client application with client data sets with
Delphi 7) which works very well.
The server consists of one rather simple remote data module with a
TIBDatabase, some IBQueries plus a provider for each query.

Now I have to add a new query plus provider to the server. Everything seems
fine, server is running and in the Delphi IDE I can see the new provider
(with all field names and params) when I set the ProviderName to the new
client data set.
However, when I want to get data from the new provider I get an exception
once I try to open the clientdataset. Error message ist "provider is not
exported"
Of course I have set the provider.exported := true in the remote data
module, and I also tried to unregister the old version of the DCOMserver
with tregsvr.exe.

Is there any thing I might have forgotten, in the server or in the client?

Thanks for any comments!

Bernhard

Bernhard Buschinger · Guest

Hi all,

some additional things I tried today:
If I use the same CDS (with the new provider) an put a TDataSource and e.g.
a TDBGrid to it, then I can see data both in IDE and in the compiled app, no
exception occurrs. But only as long as I have the CDS.active=true in the
Object inspector.
If I set the CDS.active to false and then try to activate at run time, the
exception comes.

Regards, Bernhard