How to fix the Oracle error ORA-14266: data type or length of an index subpartitioning column may not be changed?

In this post, you’ll learn more about the Oracle ErrorORA-14266: data type or length of an index subpartitioning column may not be changed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-14266: data type or length of an index subpartitioning column may not be changed

Reason for the Error ORA-14266: data type or length of an index subpartitioning column may not be changed

User issued ALTER TABLE statement attempting to modify data type and/or length of a column used to subpartition some index defined on the table named in ALTER TABLE statement, which is illegal

How to fix the Error ORA-14266: data type or length of an index subpartitioning column may not be changed ?

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

Avoid modifying data type and/or length of index subpartitioning column(s)