>>>>We have an index that keep corrupting all the time. Even if I delete the table, rebuild it from scratch and recreate the indexes, the same index will eventually corrupt itself again. Allways the same index and allways the same table.
>>>>
>>>>Except for power failure or application shutdown in a middle of a write, what can cause this ? And how to avoid it ?
>>>>
>>>>TIA
>>>
>>>What is the index expression?
>>
>>It's a combined fields index : NO_PARTEN+DTOC(DTPREL)+STR(IDCARTE,2)
>
>Can DTPREL ever be .NULL.?

The field is defined as NOT NULL