Connection to linux server with ORACLE SQL DEVELOPER

1.Link name is random

2.username and password is database account

3.host name  is ip address  ifconfig

4.port usually is 1521  command lsnrclt start

5.sid:you can use echo $ORACLE_SID

6.server name :(a.lsnrctl start  b.lsnrctl status c.lsnrctl stop)

• 1.launch monitor  a.lsnrctl start 
• 2.lsnrctl status you can get services name PROD.enmoedu.com