Oracle : Ошибка ORA-14266

"data type or length of an index subpartitioning column may not be changed"
*Cause: 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
*Action: Avoid modifying data type and/or length of index
subpartitioning column(s)

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