Question: Can you help me with a coding example showing how to program the handle of the database errors. Until now I always used "on E: EFIBError do ..." and do not know how I can program this in FIBPlus.

Answer: You can use both - standard exceptions (EDatabaseError) and specific FIBPlus exceptions. For example:

try
 something
except
 on E: EFIBError do ...
end

FIBPlus exceptions are described in fib.pas:

EFIBError = class(EDatabaseError)
private
  FSQLCode: Long;
  FIBErrorCode: Long;
  FSQLMessage :string;
  FIBMessage :string;
  SenderObj :TObject;
  public
    constructor Create(ASQLCode: Long; const aMsg: String;Sender:TObject);
    constructor CreateEx(ASQLCode: Long; const IBMsg,SQLMsg: String;Sender:TObject);
    property SQLCode : Long read FSQLCode ;
    property IBErrorCode: Long read FIBErrorCode ;
    property SQLMessage :string read FSQLMessage;
    property IBMessage :string read FIBMessage;
end;
EFIBInterBaseError = class(EFIBError);
EFIBClientError = class(EFIBError);

For more details about this please read an article "FIBPlus: handling database errors"  

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We are a small software company with thousands of customers delivering comany wide systems including accounting, logistics, e-commerce, POS, sales etc etc. Several years ago, when we were still a very small company, we used Delphi 3 and Paradox combined with BDE. As our system (and customer base) grew I decided to switch to Delphi 5 and Interbase. Being a huge improvement over Delphi 3 and Paradox, I encountered numerous problems with IBX: memory leaks, performance issues and other problems. Borland was not to be bothered: IBX was provided "as is" and no support was avaliable. 
Not being very eager to use third party components with Delphi at first, I decided to give FIBPlus a try. At once all problems where gone: no more memory leaks and  performance was very consistent. 
But the real advantage of switching to FIBPlus came with the upgrade to D2005: after upgrading there were some problems with the new FIBPlus version. After emailing the problem I received an update within an hour! And this was at 11 pm! A few other (smaller) errors where handled in the same way. 
Our motto is: software is as good as its support. And support of Devrace is just great!
Just a little indication of our FIBPlus use: all our software runs 100% on FIBPlus. Our customers have a total of aprox. 4.800 Firebird databases in production, with a combined size of over 130TB and over 80 million transactions a day. Every
day. And FIBPlus has not failed a single transaction. Not once. There is, however, one (minor) drawback in using FIBPlus: while debugging an application which uses and invalid SQL instruction, de Delphi Debugger returns to the FIBPlus code instead of to our calling code (where the actual error comes from), thereby complicating de debug proces a little. But that is a very small price to pay for a otherwise brilliant third party solution! >>

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