Hi All,

I am trying to find the reason for getting the duplicate numeric sequental keys in FP DOS 2.5 networking app, running under Windows 95 + NT Server 4.0. There used common approach with system lookup table with next available key - you know:
RLOCK(), increment, REPLACE, UNLOCK, return the key.
The system table is closed after each REPLACE.
But it still generate duplicate keys. And the running the tests say, for total 300,000 records created from 2-3 workstations show no duplicates.
I searched UT for this subject and know that there may be a problem with the buffers on NT Server, or Windows may not tell FP the real truth about locked/unlocked records :). BTW, after the NT server was moved from the next room to another building the number of duplicates was greatly reduced.
I am going to try to disable NT Server write cache, but it can cause other problems.

Does anybody have extra info, experiences or ideas on this subject?