Cause
An attempt was made to drop all columns in a table.
An attempt was made to drop all columns in a table.
Make sure at least one column remains in the table after the drop column operation.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/9594481
https://community.oracle.com/message/1795533
Browse all solutions to database errors from Oracle, MS SQL, or MySQL