Connection issues between SCA and database

From time to time we face issue with connection between SCA (server) and the MSSQL Database running on different server.
Within TEMA log errors like
[ERROR] Java::ComMicrosoftSqlserverJdbc::SQLServerException: Connection reset by peer: socket write error
are logged and SCA shows “database not available” at logon.

Is there anyway to get the connection more reliable or trigger SCA to reconnect?