delete component reference designators performance issue

Hi experts:

 

In 12.1.3

In BOM,when delete one component reference designators take 4 min.

DELETE FROM BOM_REFERENCE_DESIGNATORS
WHERE
COMMON_COMPONENT_SEQUENCE_ID = :B2 AND COMPONENT_REFERENCE_DESIGNATOR = :B1

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          0          0           0
Execute      1     23.51     237.57     436306     438907         81           0
Fetch        0      0.00       0.00          0          0          0           0
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        2     23.51     237.57     436306     438907         81           0

Create an index , the issue solved.

But we want a patch to solve this issue, Which file need to upgrade to high version can solve this issue?

This script include in which package?

Thanks
Fengling