Gracias, Angel.

Thank you for your answer.

I don't get anymore ServerManager error (No message file for product=RDBMS, facility=MGR), but I still have the errors from Services initiation:

Could not find key for service OracleDEFAULT_HOMETNSListener.
Could not find key for service OracleDEFAULT_HOMEAgent.
Could not find key for service OracleDEFAULT_HOMEDataGatherer.
Could not find key for service OracleDEFAULT_HOMEClientCache80.

And now, if I try to connect to ServerManager as system/manager, I get this message:

ORA-01033: ORACLE initialization or shutdown in progress

Any suggestion?

Thank you.