PostgreSQL 01007 Error: Causes and Solutions Complete Guide

PostgreSQL Error 01007: privilege not granted

PostgreSQL SQLSTATE 01007 (privilege_not_granted) is a warning-level condition that occurs when you attempt to grant a privilege that either doesn't exist on the target object or that the grantor doesn't actually possess. Unlike hard errors, this warning won't abort your transaction, but it signals that your GRANT statement had no real effect — which can silently break application permissions if left unaddressed.

---

Top 3 Causes

1. Grantor Doesn't Hold the Privilege (or Lacks GRANT OPTION)

The most common cause: the user executing GRANT doesn't own the privilege they're trying to delegate. In PostgreSQL, you can only grant what you have — and only re-grant it if you received it WITH GRANT OPTION.

-- Check who has grant option on a table
SELECT grantor, grantee, privilege_type, is_grantable
FROM information_schema.role_table_grants
WHERE table_name = 'orders';

-- Wrong: app_user trying to grant INSERT without holding it
-- (logged in as app_user who only has SELECT)
GRANT INSERT ON TABLE public.orders TO another_user;
-- WARNING: 01007: privilege not granted

-- Fix: superuser grants with GRANT OPTION
-- (logged in as postgres/superuser)
GRANT INSERT ON TABLE public.orders TO app_user WITH GRANT OPTION;

-- Now app_user can delegate INSERT to others
-- (logged in as app_user)
GRANT INSERT ON TABLE public.orders TO another_user;

2. Target Object Doesn't Exist or Schema Path Is Wrong

If the table, view, or sequence referenced in the GRANT statement doesn't exist — or isn't visible due to a missing search_path — PostgreSQL raises 01007 instead of a hard error in some contexts.

-- Verify the object exists before granting
SELECT schemaname, tablename
FROM pg_tables
WHERE schemaname = 'public' AND tablename = 'orders';

-- Bad: no schema qualification, wrong search_path
GRANT SELECT ON orders TO readonly_user;

-- Good: always qualify with schema name
GRANT SELECT ON TABLE public.orders TO readonly_user;

-- Grant on entire schema to avoid missing objects
GRANT USAGE ON SCHEMA public TO readonly_user;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly_user;

-- Cover future tables too
ALTER DEFAULT PRIVILEGES IN SCHEMA public
GRANT SELECT ON TABLES TO readonly_user;

3. Misconfigured Role Hierarchy

In role-based access control setups, granting a privilege through a role that lacks INHERIT or isn't properly linked in the role chain causes silent failures.

-- Inspect role membership and inheritance
SELECT r.rolname, r.rolinherit, m.roleid::regrole AS member_of
FROM pg_roles r
LEFT JOIN pg_auth_members m ON r.oid = m.member
WHERE r.rolname = 'app_role';

-- Fix: ensure role inheritance is enabled
ALTER ROLE app_role INHERIT;

-- Set up a clean role hierarchy
CREATE ROLE readonly_role NOLOGIN;
CREATE ROLE readwrite_role NOLOGIN;

GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly_role;
GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA public TO readwrite_role;

-- Assign roles to users (not direct privileges)
GRANT readonly_role TO reporting_user;
GRANT readwrite_role TO app_user;

---

Quick Fix Checklist

-- 1. Confirm current user's privileges
SELECT * FROM information_schema.role_table_grants
WHERE grantor = current_user OR grantee = current_user;

-- 2. Switch to superuser and re-grant cleanly
-- (as postgres superuser)
GRANT ALL PRIVILEGES ON TABLE public.orders TO app_user;

-- 3. Validate effective privileges after fix
SELECT has_table_privilege('app_user', 'public.orders', 'INSERT');
-- Should return: true

---

Prevention Tips

• Use role-based access control (RBAC): Never grant privileges directly to individual users. Define readonly_role, readwrite_role, and admin_role upfront, then assign users to roles. This centralizes permission management and eliminates most 01007 scenarios.

• Add idempotent guard logic in migration scripts: Before executing GRANT, verify that the object exists and the privilege isn't already granted. Use conditional DO blocks to make scripts safe to re-run across dev, staging, and production environments without triggering spurious warnings.
  

-- Safe, repeatable grant pattern
DO $$
BEGIN
  IF EXISTS (
    SELECT 1 FROM pg_tables
    WHERE schemaname = 'public' AND tablename = 'orders'
  ) THEN
    GRANT SELECT ON TABLE public.orders TO readonly_user;
  ELSE
    RAISE WARNING 'Table not found, skipping grant';
  END IF;
END;
$$;

• Related errors to watch: 42501 (insufficient_privilege) is the runtime counterpart — it fires when a user accesses an object without permission. If you see 01007 during setup and 42501 in production logs, the grant likely never took effect.

---

📖 Want a more detailed guide?
Check out the full in-depth version (Korean) on oraerror.com — includes detailed analysis, additional SQL examples, and prevention tips.