ORA-14255: table is not partitioned by Range

admin

ORA-14255: table isnot partitioned by Range, List, Composite Range or Composite
List method
Cause: The table was not partitioned by Range, List,Composite Range or
Composite List method.
Action: ALTERTABLE SPLIT/DROP PARTITION or ALTER TABLE MERGE
PARTITIONS command is only valid for table partitioned by Range, List,
Composite Range or Composite List methods. Ensure that the table is partitioned
appropriately.