Thanks for answer Al.
The updated my situation is following :
- I reinstalled paradox and BDE 5.11
- form BDE tool i confirm that all .net are the same even the case
- i deletetd all .net and .lck files
- local share is set to true
- i managed to disable oplocks on all pc-s
- imanaged to disable write caching on pc without raid controller
- i'm not able to remove write caching on server (i think most important) that has raid controller NVIDIA ....if you know some hints i would appraciate a lot
After this things goes better but not complteley ok.
- paradox creates again lck files and locks records
- there is not refresh for changes made from another user unless you close or F5 lock again record
- in few hours no more corruption but only two users ...on monday more relevant test
So if you have ideas or know how to remove wrtie caching with raid thanks a lot,