How to connect to Oracle 11g database remotely

Question

I have Oracle 11g XE installed on computer A. I can connect through the sql command line using the command connect username/password. I also can send SQL instru

Answer 1

# . /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh  

#  sqlplus /nolog  

SQL> connect sys/password as sysdba                                           

SQL>  EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);  

SQL> CONNECT sys/password@hostname:1521 as sysdba