This was a known bug in the driver. It was fixed but not included in
the UP2 by accident.
Find the driver on the web site. Better yet, sign up for the FB
dbExpress driver that is in
beta. So far it works fine, but we won't really put it through its
paces until early next week.

Guillermo Najar-Arreola wrote:

>Hi,
>I'm using Firebird 1.0 with Delphi 6 UP2; my problem relates with BCD data
>and I don´t know if the problem resides on Delphi or Firebird, so I'm sorry
>if my post is not 100% Firebird related and If you can help me, I'd
>appreciate very much.
>
>I have a table field defined as Numeric(18,0) in Firebird 1.0. The table has
>about 7800 records, and that field (called OID_VENDOR) started at 1, 2, 3
>... ending with vaule 7,800.
>On my D6 UP2 app, I have the SQLDataSet-Provider-ClientDataSet components
>(dbExpress),
>linked to VENDOR table. When the DataModule is created, I get an
>EDataBaseError exception: "BCD Overflow" and the application can't go on.
>OID_VENDOR is defined in the SQLDataSet and ClientDataSet as Persistent
>ftFmtBCD field.
>I created a test application with a DBGrid on a window to show the table,
>using the same components as on my main application. The program ran ok, but
>on the OID_VENDOR field I saw that the first 9 records (with OID values from
>1 to 9) show "=" or "?" instead of the actual OID values 1..9. From 10 to
>99, the values are show ok; from 100 to 999, it shows the first 2 digits of
>the number, but the 3rd is garbled with "=" or "?".
>
>What is happening ?
>
>Guillermo
>
>
>
>
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--
Thomas Miller
Delphi Client/Server Certified Developer
BSS Accounting & Distribution Software
BSS Enterprise Accounting FrameWork

http://www.bss-software.com