Cause
The user attempted to load a SQL Tuning Set using an invalid input cursor. All rows in the cursor must match type SQLSET_ROW.
The user attempted to load a SQL Tuning Set using an invalid input cursor. All rows in the cursor must match type SQLSET_ROW.
Check the rows type in the cursor and retry the 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/2268439
Browse all solutions to database errors from Oracle, MS SQL, or MySQL