PostgresDB 2B000: Dependent Privilege Descriptors Still Exist

Dependent privilege descriptors are still present.

When encountering the error 2B000: Dependent Privilege Descriptors Still Exist in PostgreSQL, the immediate actionable steps are as follows:

  1. Identify Dependent Objects: Start by identifying which objects are dependent on the privilege or object you are trying to modify or drop. Use the following SQL query to find dependencies:

SELECT classid::regclass AS dependent_table, objid::oid AS dependent_object, refclassid::regclass AS referenced_table, refobjid::oid AS referenced_object
FROM pg_depend
WHERE refobjid = (SELECT oid FROM pg_class WHERE relname = 'your_table_name') AND deptype = 'n';

Replace 'your_table_name' with the name of the table you're interested in. This will list objects that depend on your specified table.

  1. Review Dependent Objects: Examine the output from the query above to understand what specific privileges or objects are creating dependencies.
  2. Remove or Alter Dependencies: Based on your review, decide if you need to drop the dependent objects or alter them to remove the dependency. This might involve dropping dependent views, functions, or altering roles and privileges. Use the DROP or ALTER SQL commands as appropriate. For example, to drop a view:

DROP VIEW IF EXISTS dependent_view_name CASCADE;

Or, to revoke a specific privilege:

REVOKE ALL ON your_table_name FROM role_name;

Replace dependent_view_name, your_table_name, and role_name with the actual names in your database.

  1. Retry Your Operation: After cleaning up the dependencies, retry the operation that resulted in the 2B000 error.

Warning: Be cautious when dropping objects or revoking privileges, especially when using the CASCADE option, as it can have wider implications than anticipated. Always ensure you have a recent backup before performing such operations.

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