When encountering the 3D000: Invalid Catalog Name error in a PostgreSQL database, execute the following actions to identify and resolve the issue:
- Verify Database Connection Parameters: Check the connection string or parameters being used to ensure that the database name is correctly specified. A typo or incorrect database name can cause this error.
SELECT current_database();
- List Available Databases: Verify that the database you are trying to connect to exists by listing all available databases. If the database does not exist, you have found the issue.
\l
- Check Database Access Permissions: Ensure the user has the necessary permissions to access the targeted database. Lack of permissions can sometimes manifest as an inability to find or access the database.
\du
- Review PostgreSQL Logs: Check the PostgreSQL server logs for more details on the error. The logs may provide additional context or specify why the database name is considered invalid.
tail -f /var/log/postgresql/postgresql-XX-main.log
- Replace
XX with your PostgreSQL version. - Ensure the Database Service is Running: Verify that the PostgreSQL service is running and accessible. If the service isn’t running, connection attempts will fail.
sudo systemctl status postgresql
Take the action that corresponds to the findings from these steps.
