Originally posted by BV1963

I believe you do not see a tail of the name and that is why they appear to be the same.
You've missed the point. It is very evident that Queyon has two tables with the same names, except that one is in uppercase (default), the other one in mixed case. Those are two different tables for Oracle, and as Jeff has allready pointed out you have to use double quotes to reference a mixed-case-named table.