In this post, I am sharing a script for getting the list of objects of a particular User (Owner of the Object) in PostgreSQL.
Generally, PostgreSQL DBAs are using this kind of script for auditing purpose and object tracking purpose.

Using the below script, you can get the list object for a particular user:

I used a ‘postgres’ default user in WHERE condition, which you can edit as per your user.

select 
    nsp.nspname as SchemaName
    ,cls.relname as ObjectName 
    ,rol.rolname as ObjectOwner
    ,case cls.relkind
        when 'r' then 'TABLE'
        when 'm' then 'MATERIALIZED_VIEW'
        when 'i' then 'INDEX'
        when 'S' then 'SEQUENCE'
        when 'v' then 'VIEW'
        when 'c' then 'TYPE'
        else cls.relkind::text
    end as ObjectType
from pg_class cls
join pg_roles rol 
	on rol.oid = cls.relowner
join pg_namespace nsp 
	on nsp.oid = cls.relnamespace
where nsp.nspname not in ('information_schema', 'pg_catalog')
    and nsp.nspname not like 'pg_toast%'
    and rol.rolname = 'postgres'  
order by nsp.nspname, cls.relname

The Database security is always one of the major tasks for all the Database Administrators.
I have also prepared one article to create Read only User in PostgreSQL.

PostgreSQL: Script to Create a Read-Only Database User

In this post, I am sharing small note about REVOKE privileges for newly created Database Users of PostgreSQL.

Before a few days ago, one of the PostgreSQL Junior DBA asked this question on my FB Page. He created one new DB User in PostgreSQL and without giving a any permission that USER can CONNECT to all Databases.

Yes: When you create any new DB User in PostgreSQL, It has a default CONNECT privileges.
But It cannot access any Table or data of Databases, yes It can create new Table in any Database.

To prevent a new User for connecting any existing Database, we should run REVOKE command on particular User or Role.

REVOKE CONNECT privileges from Database:

REVOKE CONNECT ON DATABASE Database_Name FROM User_Name;

REVOKE all privileges from Database:

REVOKE ALL PRIVILEGES ON DATABASE Database_Name FROM User_Name;

You should GRANT only required Databases:

GRANT CONNECT ON DATABASE Database_Name TO User_Name;