Erro Referente ao Banco

Gostaria de saber o que significa estes erros.

SEVERE: [Microsoft][ODBC SQL Server Driver][SQL Server]Invalid object name ‘DUAL’.

SEVERE: com.evermind.server.rmi.OrionRemoteException: Transaction was rolled back: java.lang.NullPointerException; nested exception is:
java.lang.NullPointerException

Grato!