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Error in TDASession - Service-application

rbuserrbuser
edited July 2006 in General
?Hi,

i am building a service application with a lot of threads. In one thread
i am creating an TppReport-object and try to print a report (using also
the DOA-Oracle-Plugin).
Now i got the error:

TdaSession.GetDatabaseForName: No TOracleSession object found for
specified name, cvs. A separate database connection is required for each
thread.

I have already a DOA-database session created in this thread (inherited
from TThread). How can i register this session to the reportengine. I am
not using any forms or datamodules in my service application.

Best regards
Sven Heuer

Delphi 7. RB 9 Enterprise-Edition



--- posted by geoForum on http://delphi.newswhat.com

Comments

  • nardmoseleynardmoseley
    edited July 2006

    - The Report component and associated data access components, including the
    TOracleSession, need to have a common Owner. Typically the Owner is a
    TDataModule/TForm upon which the Report resides.

    - the TOracleSession Name needs to reflect that
    Designer.Datasettings.DatabaseName that you used at the time you created the
    report.

    - You can modify the DADE plug-in for DOA if you wish to implement an
    alternative strategy. Based on your description, I would try modifying
    TdaDOASession.GetDatabaseNames to add the TOracleSession instance for the
    relevant thread. That will likely get it working. If not trace the code in
    daDB.pas for the method, TdaSession.GetDatabaseForName. You can also
    override this method in the TdaDOASession descendant class.





    Best regards,

    Nard Moseley
    Digital Metaphors
    www.digital-metaphors.com
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