Apps using "postgres" user instead of my_user in the database

My postgres databse keeps the value postgres for database name even when I create new db and new user. It seems that no matter what I do, I cannot alter it.facing the error I want to use my database name and user when i change the database name to “postgres” and username into “doadmin” application connecting to the database else showing this error on change the name of my db and user

apps@feedback-app-7-jx2mf:~$ rails db:migrate
 rails aborted!
 ActiveRecord::StatementInvalid: PG:: Insufficient Privilege: ERROR: permission denied for table schema_migrations /workspace/bin/rails:5:in `<main>'
Caused by:
 PG:: InsufficientPrivilege: ERROR: permission denied for table schema_migrations
 /workspace/bin/rails:5:in `<main>'
 Tasks: TOP => db:migrate
 (See full trace by running task with --trace) apps@feedback-app-7-jx2mf:~$

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Accepted Answer

This help me in resolving this error

GRANT ALL PRIVILEGES ON DATABASE your_database to your_database_user; ALTER DATABASE your_database OWNER TO your_database_user;

Bobby Iliev
Site Moderator
Site Moderator badge
June 27, 2023

Hi there,

Once you’ve added your new database user, you would also need to add the required privileges so that the user would have access to your database in question.

With the DigitalOcean Managed database clusters, you can do that by following the steps from the documentation here:

  • Connect to your managed cluster:
psql "postgresql://"
  • From here, connect to the database that you want to modify the user’s privileges on.
\connect example_database
  • Then grant the necessary privileges to your user on your database and its tables. Replace your_user with your user name:
GRANT ALL PRIVILEGES ON DATABASE your_database TO your_user;

Let me know how it goes after that!



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