0. Basic Requirements

• 🔁[sudo apt update && sudo apt upgrade]
• update java[sudo apt install openjdk-11-jdk] <!-- - [sudo apt install sqldeveloper] if non WSL else download from here -optional(can use VSCode extension) -->

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  Oracle SQL Developer(Tool installation) -optional [can use VSCode extension + Oracle Express Edition(wsl)]

PL/SQL Configuration

• Oracle SQL Developer comes with PL/SQL support 😋. You can create and run PL/SQL scripts directly within the tool.

Install Oracle SQL Developer on 🐧 Ubuntu

1. Download Oracle SQL Developer

• Go to the Oracle SQL Developer download page and download the Linux RPM file.

2. Extract the downloaded file to a folder of your choice.

• if you don't have unzip installed, install it using the following command:

  sudo apt-get install unzip

• Once the download is complete, extract the archive to a location of your choice.

  -- unzip sqldeveloper-*-no-jre.zip (for any version)
  unzip sqldeveloper-20.4.1.407.0006-no-jre.zip 

3. Install Required Packages

• Oracle SQL Developer requires some additional packages. Install them using the following commands:

    sudo apt-get install libc6-i386 lib32ncurses5 lib32z1 lib32stdc++6

4. Run Oracle SQL Developer

• Navigate to the sqldeveloper folder and run the sqldeveloper.sh script.

  cd sqldeveloper
  ./sqldeveloper.sh

• The first time you run Oracle SQL Developer, it will prompt you to locate the Java executable. Provide the path to your JDK installation.

5. Configure Oracle Database Connection

• Open Oracle SQL Developer.
• Click on "View" in the menu and select "Connections" to open the Connections tab.
• Right-click on "Connections" and choose "New Connection."
• Enter the connection details such as Connection Name, Username, Password, and SID/Service Name.

Note: If you followed the steps then no need to install Oracle Express Edition(wsl) as it comes with Oracle SQL Developer.

🪟 Windows Subsystem for Linux (WSL)

• Download the Linux RPM
• make sure to move the downloaded file to the WSL filesystem
• Install the RPM package using the following command:

  sudo rpm -i sqldeveloper-20.4.1.407.0006-20.4.1-407.0006.noarch.rpm

- Navigate to the sqldeveloper folder and run the sqldeveloper.sh script.

  cd sqldeveloper
  ./sqldeveloper.sh

If you want to create a desktop shortcut, right-click on the sqldeveloper.sh script and select Create Shortcut. You can then copy the shortcut to your desktop.

1. Install Required Packages

• Oracle Database Express Edition requires some additional packages. Install them using the following commands:

  sudo apt-get install alien libaio1 unixodbc

2. Download or Install Oracle Database Express Edition (Oracle XE):

A. Download

Go to the Oracle website and download the Oracle Database Express Edition for Linux. Make sure to accept the license agreement.

• Oracle Database Express Edition 21c Express Edition for Linux x64
• Extract the downloaded file to a folder of your choice.

  unzip oracle-database-xe-*.rpm.zip

B. Install

• Install the RPM package using the following command:

  sudo alien --scripts -d oracle-database-xe-*.rpm

• Install the Oracle Database Express Edition using the following command:

  sudo dpkg --install oracle-database-xe-*.deb

3. Configure Oracle Database Express Edition using the following command:

  sudo /etc/init.d/oracle-xe-21c configure

• The configuration script will prompt you to set a password for the SYS and SYSTEM users. Make sure to remember the password you set for these users.
• The configuration script will also prompt you to set the HTTP port for Oracle Application Express (APEX). The default port is 8080(or any other if already port is occupied). ## 4. Start the Oracle Database Express Edition using the following command:

  sudo service oracle-xe-21c start

5. Add the following lines to the end of the /etc/bash.bashrc file:

  export ORACLE_HOME=/opt/oracle/product/21c/dbhomeXE
  export ORACLE_SID=XE
  export PATH=$ORACLE_HOME/bin:$PATH

6. Load the new environment variables using the following command:

  source /etc/bash.bashrc

7. More Configuration

• Connect to the Oracle Database Express Edition using the following command:

  sqlplus sys as sysdba

• Enter the password you set for the SYS user when you configured the Oracle Database Express Edition.
• Run the following command to unlock the HR user:

  ALTER USER hr ACCOUNT UNLOCK;

• Run the following command to change the password for the HR user:

  ALTER USER hr IDENTIFIED BY hr;

• Connect to the Oracle Database Express Edition using the following command:

  sqlplus hr/hr

• Stop the Oracle Database Express Edition using the following command:

  sudo service oracle-xe-21c stop

• Run the following command to exit SQL*Plus:

  exit