Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib

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Matheus Mello
Matheus Mello
published a few days ago. updated a few hours ago

Solving the "Library not loaded" Error in PostgreSQL

So, you just installed PostgreSQL using Homebrew and you're excited to get started. But as soon as you type in the command psql, you hit a roadblock. Error message "dyld: Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib" appears, leaving you clueless. Don't worry, we're here to help! 👩‍💻🚀

Understanding the Error

Let's break down the error message to better understand what's going wrong:

dyld: Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib

This error usually occurs when the required library file, libreadline.6.2.dylib, is missing or not correctly linked.

Possible Causes

There are a few common causes behind this issue:

  1. Missing or Incompatible Readline Library: PostgreSQL relies on the Readline library, and it seems it can't find the required version (libreadline.6.2.dylib) in the specified directory.

  2. Incomplete Installation: It's possible that the PostgreSQL installation process encountered an error or wasn't completed correctly.

  3. Outdated or Incorrect Paths: Your system might have outdated or incorrect paths set up for PostgreSQL or the Readline library.

Easy Solutions

To get PostgreSQL up and running without the "Library not loaded" error, try these solutions:

1. Reinstall PostgreSQL

Sometimes, a fresh installation can solve the problem. Follow these steps:

  1. Uninstall PostgreSQL: Run brew uninstall postgresql to ensure a clean slate.

  2. Perform Cleanup: Run brew cleanup to remove any leftover files from the previous installation.

  3. Reinstall PostgreSQL: Run brew install postgresql to install PostgreSQL again.

After reinstalling, run psql command and cross your fingers 🤞.

2. Reinstall Readline Library

If the Readline library is missing or incompatible, try reinstalling it:

  1. Uninstall Readline: Run brew uninstall readline.

  2. Clean Up: Run brew cleanup to remove any remaining files.

  3. Reinstall Readline: Run brew install readline.

Once the installation is complete, give psql a whirl and see if it resolves the error.

3. Update Paths

Updating your system's paths can help PostgreSQL locate the required libraries. Follow these steps:

  1. Open your shell's configuration file (e.g., .bash_profile, .zshrc).

  2. Add the following line to the file:

    export PATH="/usr/local/opt/readline/bin:$PATH"
  3. Save the file and close it.

  4. Reload the configuration: Run source ~/.bash_profile or source ~/.zshrc, depending on which file you edited.

Now, try running psql again and see if the error disappears.

Engage with Tech Community

We hope one of these solutions solved the "Library not loaded" error for you. If none of the solutions work, don't panic! Reach out to the tech community and ask for help. Engage on forums, discussion boards, or social media platforms. Someone out there might have faced a similar issue and could offer a solution.

Make sure to share your experience and encourage others who might be struggling with the same problem. Together, we can make tech troubleshooting easier for everyone! 🌟

Now, go ahead and embrace the world of PostgreSQL! Happy coding! 💻💪

Have you encountered the "Library not loaded" error in PostgreSQL before? How did you solve it? Share your insights in the comments below and help fellow coders!

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