In this post, you’ll learn more about the Oracle ErrorORA-25015: cannot perform DML on this nested table view column with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-25015: cannot perform DML on this nested table view column
Reason for the Error ORA-25015: cannot perform DML on this nested table view column
DML cannot be performed on a nested table view column except through an INSTEAD OF trigger
How to fix the Error ORA-25015: cannot perform DML on this nested table view column ?
You can fix this error in Oracle by following the below steps
Create an INSTEAD OF trigger over the nested table view column and then perform the DML.