How To Uninstall Postgresql On Mac

Title: How to Uninstall PostgreSQL on Mac Seamlessly

Opening Loop: Are you facing issues with PostgreSQL on your Mac and want to uninstall it but don’t know where to begin? Keep reading to uncover a straightforward method that works on all macOS versions.


PostgreSQL is an incredibly powerful, open-source object-relational database system. While it offers numerous benefits, sometimes, the need arises to uninstall it from your Mac. If you’re in such a situation and wondering how to uninstall PostgreSQL on Mac, this post has got you covered. By the end of this article, you’ll have learned easy steps to remove PostgreSQL and its components completely from your system.

Why Uninstall PostgreSQL?

Before diving into the uninstallation process, let’s understand why some users might want to uninstall PostgreSQL. Common reasons include:

1. Incompatibility with other software.
2. Corrupted installation files causing errors.
3. System performance issues.
4. Upgrading to a newer version of PostgreSQL.
5. Switching to another database management system.

Whatever your reason, follow the steps below, and you’ll successfully uninstall PostgreSQL from your Mac.

Step-by-step Guide: How to Uninstall PostgreSQL on Mac

In this guide, we will be using the Terminal app, which comes built-in with macOS. Don’t worry if you’ve never used it before – our instructions are clear and user-friendly. Just follow along, and everything will work out seamlessly.

Step 1: Open Terminal
First, open the Terminal app on your Mac. To do this, navigate to Applications > Utilities > Terminal.

Step 2: Find PostgreSQL Files
Before uninstalling PostgreSQL, you must locate its files on your system. To do this, type the following command in Terminal:

find / -name postmaster 2>/dev/null

This command will search your system for the ‘postmaster’ file related to PostgreSQL. The search results will display a folder path, which will guide you to PostgreSQL’s installation directory.

Step 3: Uninstall PostgreSQL
Once you’ve found the installation directory, it’s time to uninstall PostgreSQL. Follow these steps:

1. Change to the PostgreSQL installation directory using the ‘cd’ command in Terminal, followed by the folder path from the search results. For example:

cd /Library/PostgreSQL/13

2. Next, run the following command to uninstall PostgreSQL:

sudo ./uninstall-postgresql

You might be prompted to enter your Mac’s administrator password. Type it in and press Enter. This command will start the uninstallation process, during which PostgreSQL’s components will be removed from your system.

Step 4: Remove Remaining Files and Folders (Optional)
To ensure all PostgreSQL-related files are removed, follow these optional steps:

1. Run the following command to delete the PostgreSQL user account:

sudo dscl . -delete "/Users/postgres"

2. Remove the PostgreSQL folder by entering the following command in Terminal:

sudo rm -rf /Library/PostgreSQL

Final Thoughts

Now that you’ve learned how to uninstall PostgreSQL on Mac, your system should be free of any related files and components. If you decide to reinstall PostgreSQL later, you can easily do so by downloading the latest version from their official website. Just remember to backup your data before uninstalling any software, as data loss can occur during the process.

Closing Loop: With our easy-to-follow guide, you can now confidently uninstall PostgreSQL from your Mac without any hiccups. Say goodbye to the days of struggling with cluttered software and hello to a cleaner system!

How To Uninstall and Delete Apps and Programs on a Mac Computer

YouTube video

How to Delete Apps on Mac 2021 (easy)

YouTube video

How do I completely uninstall PostgreSQL?

When it comes to completely uninstalling PostgreSQL, it is important to not only remove the main program but also all the related components and data. Follow these steps to make sure you uninstall PostgreSQL entirely:

Step 1: Stop PostgreSQL services

Before removing PostgreSQL, stop all running services associated with it.

1. Press Windows + R keys together to open the Run dialog box.
2. Type services.msc and press Enter.
3. In the Services window, find the PostgreSQL-related services, such as PostgreSQL Server and pgAdmin.
4. Right-click on each service and select Stop.

Step 2: Uninstall PostgreSQL from your system

With the services stopped, you can now proceed to remove the program.

1. Open the Control Panel and go to Programs and Features.
2. Find PostgreSQL in the list of installed programs.
3. Right-click on PostgreSQL and select Uninstall.
4. Follow the uninstallation prompts to complete the removal process.

Step 3: Delete PostgreSQL data folders

Ensure that all PostgreSQL data and configuration files are removed from your system.

1. Open File Explorer and navigate to the installation directory, which is usually in C:Program FilesPostgreSQL or C:Program Files (x86)PostgreSQL.
2. Delete the PostgreSQL folder entirely.
3. Next, delete the data folder by navigating to C:UsersYourUsernameAppDataRoaming and removing the PostgreSQL folder.

Step 4: Remove environment variables and registry entries (Optional)

This step is optional but recommended to ensure a complete removal of PostgreSQL from your system.

1. Remove environment variables by right-clicking on Computer, selecting Properties, and clicking on Advanced System Settings.
2. In the System Properties window, select Environment Variables.
3. Find any PostgreSQL-related variables in the list and remove them by clicking on Delete.
4. To delete PostgreSQL entries from the registry, press Windows + R, type regedit, and press Enter.
5. Navigate to HKEY_CURRENT_USERSoftware and delete the PostgreSQL folder.
6. Next, navigate to HKEY_LOCAL_MACHINESoftware and delete the PostgreSQL folder there as well.

After following these steps, PostgreSQL should be completely uninstalled from your system.

Does uninstalling Postgres remove the data?

When you uninstall PostgreSQL, it does not automatically remove the data associated with it. The process of uninstalling only removes the application files and components.

However, the data directory where your databases, tables, and other information are stored is not deleted during the uninstallation process. To permanently remove the data, you need to manually delete the data directory, which is typically found under the “pgdata” folder in your system.

It’s essential to backup any important data before uninstalling PostgreSQL or deleting the data directory to prevent accidental data loss.

How to install Postgres app on mac?

In the context of uninstalling apps, let me guide you on how to install the Postgres app on macOS, just in case you need to reinstall it or you are trying to troubleshoot any issues during the uninstallation process.

Step 1: Download
Visit the official website at, and click on the “Download” button to get the latest version compatible with your macOS.

Step 2: Install
Once the download is complete, locate the downloaded file (usually in Downloads folder) and double-click on it to extract the app. Drag the “Postgres” app to your Applications folder.

Step 3: Launch
Open your Applications folder and double-click the Postgres app to launch it. It will start the PostgreSQL server automatically.

Step 4: Configure PATH (optional)
To use command line tools such as psql, you need to configure the PATH environment variable. Add the following line to your ~/.bash_profile, ~/.zshrc, or ~/.profile file:

export PATH="/Applications/$PATH"

Save the file and restart your Terminal to make the changes take effect.

Now you have successfully installed Postgres app on your Mac. If you ever need to uninstall the app, simply drag and drop the Postgres app from your Applications folder to the Trash, and empty the trash. Additionally, remove the PATH configuration line from your shell profile file (e.g., .bash_profile, .zshrc, or .profile).

What are the step-by-step instructions to completely remove PostgreSQL from a Mac in the context of uninstalling apps?

To completely remove PostgreSQL from a Mac, follow these step-by-step instructions:

1. Quit any running instances of PostgreSQL. Before uninstalling PostgreSQL, make sure no applications are using it, and all its services are stopped.

2. Open Terminal on your Mac. You can find it in the Applications > Utilities folder or search for it using Spotlight.

3. Find the PostgreSQL installation directory. By default, PostgreSQL is installed in the `/Library/PostgreSQL` directory. If you have a different installation path, navigate to that directory using the `cd` command in Terminal. For example:
cd /Library/PostgreSQL

4. Run the uninstaller script. In the PostgreSQL directory, there should be an uninstaller script called `uninstall-postgresql`. Run this script by typing the following command in Terminal:
sudo ./uninstall-postgresql
Enter your Mac’s administrator password when prompted.

5. Delete the PostgreSQL user account. PostgreSQL creates a system user account named ‘_postgres’. To delete this user account, run the following command in Terminal:
sudo dscl . -delete “/Users/_postgres”

6. Remove PostgreSQL-related files and folders. Run the following commands in Terminal to delete any remaining PostgreSQL-related files and folders:
sudo rm -rf /Library/PostgreSQL
sudo rm -rf /etc/postgres-reg.ini
sudo rm -rf /Library/StartupItems/postgresql-*

7. Delete the PostgreSQL log file. The log file is usually located in the `/Library/Logs` directory. Run the following command to delete it:
sudo rm /Library/Logs/postgresql.log

8. Remove the PostgreSQL user’s home directory. Run the following command in Terminal:
sudo rm -rf /var/postgresql

9. Manually update your `PATH` variable. If you have added PostgreSQL binary paths to your `PATH` environment variable, remove those entries. Edit the configuration file (`.bash_profile` or `.zshrc`, depending on your shell) using a text editor and delete any lines containing PostgreSQL-related directories.

10. Restart your Mac. After completing all these steps, restart your Mac to ensure that all changes have taken effect.

PostgreSQL should now be completely removed from your Mac.

How do I ensure that all PostgreSQL-related files and directories are deleted when uninstalling the app on a Mac?

To ensure that all PostgreSQL-related files and directories are deleted when uninstalling the app on a Mac, follow these steps:

1. Uninstall PostgreSQL: Open Terminal and type the following command to uninstall PostgreSQL:
brew uninstall postgresql
This will remove the main PostgreSQL installation.

2. Delete data directories: In order to completely remove PostgreSQL-related data, you need to delete its data directories. Two common locations for PostgreSQL data directories on macOS are `/usr/local/var/postgres` and `~/Library/Application Support/PostgreSQL`. To delete these directories, enter the following commands in Terminal:
rm -rf /usr/local/var/postgres
rm -rf ~/Library/Application Support/PostgreSQL/

3. Remove user accounts: If you created any PostgreSQL user accounts during the installation process, you should also remove them. To do this, open “System Preferences” > “Users & Groups” and delete the PostgreSQL user account.

4. Delete plist files: Remove any leftover plist files related to PostgreSQL. These files may be located in `~/Library/LaunchAgents` or `/Library/LaunchDaemons`. To find and delete them, use the following commands in Terminal:
rm -f ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
sudo rm -f /Library/LaunchDaemons/homebrew.mxcl.postgresql.plist

5. Check for remaining related files: Search your system for any additional PostgreSQL-related files and directories that may still be present. You can use Finder or third-party tools like AppCleaner to assist in locating and removing these files.

By following these steps, you’ll ensure that all PostgreSQL-related files and directories are deleted when uninstalling the app on your Mac.

Are there any recommended tools or procedures to safely and thoroughly uninstall PostgreSQL from a macOS system?

Uninstalling PostgreSQL from a macOS system can be safely and thoroughly achieved by following these recommended steps and using specific tools. Remember to always back up your data before uninstalling any software.

Step 1: Stop PostgreSQL service
Before uninstalling PostgreSQL, make sure to stop the running service. You can do this by executing the command below in the Terminal:

pg_ctl -D /usr/local/var/postgres stop

Alternatively, you can use the following command, depending on your PostgreSQL installation:

brew services stop postgresql

Step 2: Remove PostgreSQL files and directories
Now that the service is stopped, you can remove the PostgreSQL-related files and directories. The following are the common locations where PostgreSQL files reside on macOS:

/Library/PostgreSQL: The main directory.
/Applications/PostgreSQL X.Y: The application folder.
~/.psql_history: psql command history file.
/Library/LaunchDaemons/com.edb.launchd.postgresql-X.Y.plist: Launchd configuration file.
/usr/local/var/postgres: Data directory (when installed via Homebrew).

To remove these directories, use the ‘rm’ command followed by ‘-rf’ to force deletion of the directory and its contents:

sudo rm -rf /Library/PostgreSQL
sudo rm -rf /Applications/PostgreSQL X.Y
rm ~/.psql_history
sudo rm /Library/LaunchDaemons/com.edb.launchd.postgresql-X.Y.plist
rm -rf /usr/local/var/postgres

Replace “X.Y” with your specific PostgreSQL version number.

Step 3: Unlink from Homebrew (optional)
If you installed PostgreSQL using Homebrew, you can also unlink it by running:

brew unlink postgresql

Step 4: Remove any remaining configuration files
Remove any leftover configuration files at the user’s home directory:

rm ~/.pgpass

Also, check the /etc/paths.d for any PostgreSQL-related paths and remove them if found.

By following these recommended steps and using the appropriate tools, you’ll be able to safely and thoroughly uninstall PostgreSQL from your macOS system. Remember to double-check everything before proceeding with the uninstallation, as some of these commands can remove important data if not executed properly.