SQL Developer is the GUI software to connect Oracle DB, installed on AWS Ubuntu and tested the connection to RDS.

1, Download the Oracle SQL Developer 4.1.3 through this Link.

2, Installing Java 8 on Ubuntu

​sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer​
​​​java -version
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)​
​ Configuring Java Environment

​sudo apt-get install oracle-java8-set-default​

3, install Oracle SQL Developer
Refer to this ​​​Link​​.

Generate the deb file and install,

​sudo alien sqldeveloper-4.1.3.20.78-1.noarch.rpm
sudo dpkg -i ./sqldeveloper_4.1.3.20.78-2_all.deb​
4, start and test Oracle SQL Developer

The installation folder is /opt/sqldeveloper

The very first time you start the SQL developer, you will be asked to input the JDK path, the JDK path of the AWS Ubuntu is "/usr/lib/jvm/java-9-oracle", you can find out this by following command,

​ls -lZ /usr/binjava
ls -lZ /etc/alternatives/java​

the result is showing as below pic,

AWS Ubuntu Oracle SQL Developer install and connect_connect

Use below command to start SQL Developer, and input the JDK path,

​cd /opt/sqldeveloper
./sqldeveloper.sh​

AWS Ubuntu Oracle SQL Developer install and connect_sql_02

After starting, in the SQL Developer GUI, input the Connection Name, Username, Password, Hostname, Port, SID, then click Test and Connect, if nothing error happens, it will be successful, below picture shows the GUI,

AWS Ubuntu Oracle SQL Developer install and connect_oracle_03

Reference link:
1, ​​​Oracle SQL Developer 4.1.3 Download​​​ 2, ​​How to install OpenJDK 8 on 14.04 LTS?​​​ 3, ​​RPM for Linux Installation Notes​