BEA-001156 message after DB restart

We have scheduled a DB restart outside of working hours.

A datasource that was connected on this database retuned the following error:
<BEA-001156> <Stack trace associated with message 001129 follows:
java.sql.SQLRecoverableException: IO Error: Got minus one from a read call

Then many errors with the following message:
<BEA-001156> <Stack trace associated with message 001129 follows:
java.sql.SQLRecoverableException: IO Error: Connection reset by peer, Authentication lapse 0 ms.

The Datasource was not working until we came back in the office.
Since we will have more DB restarts, how can I avoid this. I want the datasource to reconnect once the database is restarted.