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Firebird (64-bit)

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Firebird 2.5.1 (64-bit)

  -  9.68 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Firebird 2.5.1 (64-bit).


For those interested in downloading the most recent release of Firebird (64-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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Download Firebird 2.5.1 (64-bit)

  • Firebird 2.5.1 (64-bit) Screenshots

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    Firebird 2.5.1 (64-bit) Screenshot 1
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  • Firebird 2.5.1 (64-bit) Screenshot 3

What's new in this version:

- An SQLSTATE context variable is now available in PSQL, parallel to the the context variables GDSCODE and SQLCODE that are used in WHEN blocks to test for error conditions.
- A couple of improvements were made, that should help performance when global temporary tables (GTTs) are being used:
- A needed optimization in the temporary space manager with regard to small chunk allocations has been implemented.
- The Lock Manager has been provided with the capability to cancel waiting, avoiding a condition whereby a transaction in WAIT mode could wait interminably for the end of another transaction that could not be achieved by either a DELETE FROM MON$xxx or an fb_cancel_operation request.
- The query optimizer now estimates the actual record compression ratio, enabling better guesses about the number of stored records in tables.
- Some minor improvements to the remote interface.
- The MON$STATEMENT_ID value constant is now kept constant among monitoring snapshots.
- Ports of this sub-release were done for Linux/HPPA and Linux/alpha platforms

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