gabor_faludi wrote:

> Could this be that the firebird process (there is one per user) crashes
> and the data is not immediately written to files ?
> Thanks and regards,Gabor
>

If forced writes are on and working this problem won't happen.
However, during the development of V2.1.x of Firebird, the
developers tried a performance comparison of Firebird on Linux
with forced writes on and off. They were the same! Unfortunately
that was the indication of a bug in the Linux kernel, not a
wonderful optimization of disk handling. Check the 2.1.x
release notes for more details - page 23 - and suggestions for
making disk writes more reliable even with older Firebirds.


Best regards,

Ann