Create a read only monitor user to Oracle database

需要 SYSDBA 权限。

CREATE USER nagios IDENTIFIED BY oradbmon; 
GRANT CREATE SESSION TO nagios;
GRANT SELECT any dictionary TO nagios;
GRANT SELECT ON V_$SYSSTAT TO nagios;
GRANT SELECT ON V_$INSTANCE TO nagios;
GRANT SELECT ON V_$LOG TO nagios;
GRANT SELECT ON SYS.DBA_DATA_FILES TO nagios;
GRANT SELECT ON SYS.DBA_FREE_SPACE TO nagios;