Cause
you tried to modify an object which you do not own
you tried to modify an object which you do not own
have the owner modify the object
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/1243968
https://community.oracle.com/message/4264090
https://community.oracle.com/message/2187334
https://community.oracle.com/message/10627
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