How to remove unnecessary Package in Oracle Linux Server

List Installed Packages

Before uninstalling, check which packages are installed:

dnf list installed

or for older versions:

rpm -qa

Identify Unnecessary Applications

• Use dnf list installed to find applications you don’t need

• Check running services:

  systemctl list-units --type=service --state=running
  

• Use ps aux or top to find unnecessary processes.

Remove Applications Using dnf

For newer Oracle Linux versions (8+), use:

sudo dnf remove package_name -y

For example:

sudo dnf remove httpd -y  # Removes Apache HTTP Server
sudo dnf remove libreoffice* -y  # Removes LibreOffice and related packages

To remove multiple packages at once:

sudo dnf remove package1 package2 package3 -y

Remove Applications Using rpm (If dnf Is Not Available)

sudo rpm -e package_name

If dependencies prevent removal, force it with:

sudo rpm -e --nodeps package_name

Remove Unused Dependencies

After uninstalling, clean up unused packages:

sudo dnf autoremove -y

Disable and Remove Unnecessary Services

• Disable a service before removing it

sudo systemctl disable service_name --now

• Check if the service is disabled:

systemctl status service_name

• Remove the service package:

sudo dnf remove package_name -y

For example, to remove firewalld:

sudo systemctl disable firewalld --now
sudo dnf remove firewalld -y

Clear Cache and Free Up Space

After removing applications, clean up system cache:

sudo dnf clean all
sudo rm -rf /var/cache/dnf/*

Check disk usage:

df -h

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