diff --git a/instancia_omop_postgresql/grants.sql b/instancia_omop_postgresql/grants.sql
new file mode 100644
index 0000000000000000000000000000000000000000..d1dc4f26fa26a7a168393f613bb768244cbe0fab
--- /dev/null
+++ b/instancia_omop_postgresql/grants.sql
@@ -0,0 +1,11 @@
+GRANT SELECT ON ALL TABLES IN SCHEMA omop TO omop_select;
+
+GRANT USAGE ON SCHEMA omop TO omop_select;
+
+SELECT *
+  FROM information_schema.role_table_grants 
+ WHERE grantee = 'omop_select';
+
+SELECT *
+  FROM pg_tables 
+ WHERE tableowner = 'omop_select';