after Oracle restart

Hi,

We're having problems with some jsp apps and an Oracle database.
Somebody with priviliges restarted the Oracle service and deleted all rows
from a table. Now if we do a manual insert, the row appears in the table,
but if we use the import manager from within our maintenance app nothing
appears. How could this be possible, as everything worked last Friday.

Are there things of which I do not know? :)

J
.