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Asked: 2024-09-27T06:15:33+05:30 In:

how to change password on postgresql

I’m trying to change my password for PostgreSQL, but I’m running into some difficulties. Specifically, I have a working PostgreSQL database, and I’ve been using it for a while now. However, I recently realized that it might be a good idea to update my password for security reasons. The first step I thought to take was to log into the PostgreSQL command line client, but I’m not quite sure what the right commands are to change my password.

I understand that I might need to use the `ALTER USER` command, but I’m not entirely clear on the syntax. Also, do I need to be logged in as a superuser, or can I change my password while logged in as my own user account?

Additionally, is there any specific role or permission that I need to have to ensure that the password change goes smoothly? I’m also curious if the steps are different depending on whether I’m accessing a local server or a remote one. If anyone could provide me with a clear, step-by-step guide or point me to the right resources, I would really appreciate it! Thank you!

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    2 Answers

    1. How to Change Password in PostgreSQL

      Ok, so like if you wanna change your password in PostgreSQL, it’s not super hard, but I had to look it up too because it can be a bit confusing.

      1. First, you gotta open your terminal or command line thingy. It’s like a black window where you write stuff.
      2. Then, you need to log in to PostgreSQL. You can do that with this command. Just replace myusername with your actual username:
        3. psql -U myusername
      3. After you hit enter, it might ask for your password. Type it in (but it won’t show you what you’re typing, just trust that it’s there).
      4. Once you’re in, then you should be able to change your password. You just type this:
        5. ALTER USER myusername WITH PASSWORD 'newpassword';
      5. Just remember to change myusername to your actual username again and newpassword to what you want your new password to be.
      6. Hit enter, and if everything goes right, it should say something like “ALTER ROLE” or something like that.
      7. To get out of PostgreSQL, just type:
        8. \q
      8. And then you’re done! You changed your password like a champ!

      If you mess up, no worries! Just try checking the username and password you typed. Or Google might help too!


    2. To change a password in PostgreSQL, you can utilize the `ALTER USER` command. First, connect to your PostgreSQL database using an administrative role or the user whose password you want to change. You can use the command line (psql) or a graphical interface such as pgAdmin. For psql, start by executing `psql -U username -d dbname` in your terminal, replacing `username` with your admin username and `dbname` with your database name. Once connected, you can execute the following SQL statement: `ALTER USER your_username WITH PASSWORD ‘new_password’;`. Be sure to replace `your_username` with the actual username whose password you intend to change and `new_password` with the desired new password.

      It’s important to be aware of PostgreSQL’s password policies and to use a strong password that complies with them. After executing the command, it’s best to review the server’s `pg_hba.conf` file to ensure that the authentication methods employed (like `md5` or `scram-sha-256`) are compatible with your new password. Finally, reload your configuration by executing `SELECT pg_reload_conf();` to make sure your changes take effect without restarting the server. This ensures that any new connections established afterward will use the updated password credentials.

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