The following is the ORA-14263 error message, you can learn the cause and solution of the Oracle database error.
ORA-14263 new subpartition name must differ from that of any other subpartition of the object
Cause: User entered ALTER TABLE/INDEX RENAME SUBPARTITION specifying new_subpartition_name which is identical to the name of some existing subpartition of the object.
Solution: Ensure that the new subpartition name is different from the name of any (including the one being renamed) existing subpartition of a given table or index.
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