Software⏱️ 2 min read📅 2026-06-15

How to Fix: Install and configure the good locale for a postgresql error on ubuntu 18.04.2

Configure locales for PostgreSQL on Ubuntu 18.04.2 to resolve LC_COLLATE errors.

Quick Answer: Set the correct locale using "export LC_ALL=en_US.UTF-8" or "locale-gen en_US.UTF-8" and then restart the PostgreSQL service.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

Error Installing and Configuring Locale for PostgreSQL on Ubuntu 18.04.2

This error occurs when the LC_COLLATE environment variable is not set correctly, causing issues with locale configuration for PostgreSQL on Ubuntu 18.04.2.

🛑 Root Causes of the Error

  • The primary cause of this error is that the system's locale settings are not properly configured, leading to an unrecognized LC_COLLATE value.
  • Another possible cause is that the PostgreSQL database was initialized with a non-standard locale setting, which is not recognized by setlocale().

🚀 How to Resolve This Issue

Setting the Locale Environment Variable

  1. Step 1: Step 1: Update the system locale settings to use the desired locale. Run the following command: `sudo dpkg-reconfigure locales` and select the desired locale (e.g., en_US.UTF-8).

Configuring PostgreSQL to Use a Recognized Locale

  1. Step 1: Step 2: Restart the PostgreSQL service to apply the changes. Run the following command: `sudo service postgresql restart`

✨ Wrapping Up

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