Here is a link to just the lock portion:

https://www.ibm.com/support/pages/allowddlchangeswhileopen-qaqqini-option

--
Bryan

Rob Williams via MIDRANGE-L wrote on 5/12/2026 4:07 PM:
You can Grant and Revoke Authority even on locked Objects.

From a presentation by Scott Forstie

Grant and Revoke without a lock

Challenge: Seemingly impossible to make DDL changes in production
Response: ALLOW_DDL_CHANGES_WHILE_OPEN - QAQQINI control
Benefit: Ability to deploy security changes without quiescing user activity
Enhanced: GRANT and REVOKE (SQL) Grant Object Authority (GRTOBJAUT), and
Revoke Object Authority (RVKOBJAUT) CL command

From the following document.

www.semiug.org/2019/docs/IBM%20i%207.4%20and%20TR%20Announcements%20-%20Octo
ber%202019.pdf

Rob W.

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