Hello William,
The error ora-3114 only indicates that there is no connection to the database.
I always see this error <b>after</b> another one.
For that reason, i do not think that, with only this information, any help can be provided.
Mi recommendation is that you take a look at the system log ( or developer traces ) to see what happens before this error.
Of course, I'm assuming that you are not running an offline backup at the same time.
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