Tag Archives: ORA-01447

ORA-01447: ALTER TABLE does not operate on clustered columns

oracle

ORA-01447: ALTER TABLE does not operate on clustered columns
Cause: An ALTER TABLE MODIFY statement specified a column used to cluster the table. Clustered columns may not be altered.
Action: To alter the column, first re-create the table in non-clustered form. The column’s size can be increased at the same time.

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