Working through our project these past couple of weeks, our group has had problems working on our database simultaneously. We were under the impression that one of the main benefits of using Oracle was that multiple users could utilize the database and make changes at the same time. Yet for some reason, several times while all of us are logged on, one of us will try to run a query and will get the response "no rows selected" yet the other person can run the query and get results just fine. Just an observation...Have other groups had similar problems?
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