ODS-Error on connect to local Firebird-Server

[Peter Tabatt]

I have a database file with ODS 11.1 (gstat) and  use it with Firebird 2.5.9

If i start the Server local under Windows, i get an ODS-Error on connect with Delphi and devart unidac. if the server runs in a VM or an other computer and i connect via TCP/IP, all is fine, no ODS-Error. Same Error with Lazarus.

[Mark Rotteveel]

What is the exact error you get?
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Mark Rotteveel

[Mauricio Silva]

I believe the problem must be because of this:

https://github.com/FirebirdSQL/firebird/issues/7188

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[Peter Tabatt]

Exact error is: unsupported on-disk structure for file ... found 32779.18, support @4?.@5?.

[Mark Rotteveel]

On 04-06-2022 16:18, Peter Tabatt wrote:
> Exact error is: unsupported on-disk structure for file ... found
> 32779.18, support @4?.@5?.

That either means that

1) the file is not a Firebird database (but maybe an InterBase database,
or simply not a database at all)
2) the server is not a Firebird server, but an InterBase server, while
the database is a Firebird database (though I don't believe there are
database out there with ODS minor 18), this seems to be supported by the
fact there is no value for parameters 4 and 5, but maybe it is a very
old Firebird server)
3) ... not 100% sure, but maybe this could occur if you're trying to
open a Firebird database from a different platform.

Given you mention it works fine on a VM or other computer, what is the
platform of that VM or other computer? Likely you'll need to use a
backup/restore to move the DB.

Mark
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Mark Rotteveel

[Dimitry Sibiryakov]

Mark Rotteveel wrote 04.06.2022 16:26:
> 2) the server is not a Firebird server, but an InterBase server, while the
> database is a Firebird database (though I don't believe there are database out
> there with ODS minor 18), this seems to be supported by the fact there is no
> value for parameters 4 and 5, but maybe it is a very old Firebird server)

It is actually ODS major which is used by Interbase 2020. Because of crazy
mix of Firebird client, Firebird message file and Interbase server the error has
such strange text.
The database seems to have Firebird ODS 11 (Firebird 2.5) and the server is
Interbase 2020.

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WBR, SD.