Cause
An ALTER TABLE MERGE PARTITIONS <pname> TO <pname> or an ALTER TABLE MERGE SUBPARTITIONS <subpname> TO <subpname> was issued. This is only supported for range partitions or subpartitions.
An ALTER TABLE MERGE PARTITIONS <pname> TO <pname> or an ALTER TABLE MERGE SUBPARTITIONS <subpname> TO <subpname> was issued. This is only supported for range partitions or subpartitions.
Specify at least 2 resulting partitions.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/3229900
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