Hi,
I have download IBO for evaluations and with it I have writhed a simple
program, I want use the PessimisticLocking set to true, but when I try to
edit a record the program generate a error:

"Cannot use pessimistic locking with LockWait"

This is my setting:

Transaction.ServerAutoCommit:=True;
Transaction.Isolation:=tiCommitted;
Transaction.RecVersion:=False;
Transaction.LockWait:=False; // *LockWait is false* !!!!!

Query.Active:=False;
Query.AutoFetchAll:=False;
Query.AutoFetchFirst:=True;
Query.AutoPostDelete:=True;
Query.ColorScheme:=True;
Query.FetchWholeRows:=False;

Query.GetServerDefaults:=False;
Query.IB_Connection:=Connection;
Query.IB_Transaction:=Transaction;
Query.PreventDeleting:=False;
Query.RequestLive:=True;
Query.PessimisticLocking:=True;

Where I made the mistake ?

Many thanks, Marco