How to fix the Oracle error ORA-30728: maximum number of columns exceeded?

In this post, you’ll learn more about the Oracle ErrorORA-30728: maximum number of columns exceeded with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30728: maximum number of columns exceeded

Reason for the Error ORA-30728: maximum number of columns exceeded

Adding referential constraint on a REF column requires the the creation of an additional column.

How to fix the Error ORA-30728: maximum number of columns exceeded ?

You can fix this error in Oracle by following the below steps

Drop some columns and retry the operation.