User error
Make wildcard query narrower
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Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/10780509
https://community.oracle.com/message/3639102
https://community.oracle.com/message/10321014
https://community.oracle.com/message/2521200
https://community.oracle.com/message/9151350
https://community.oracle.com/message/9130933
https://community.oracle.com/message/9958851
https://community.oracle.com/message/1357791
https://community.oracle.com/message/4570701
https://community.oracle.com/message/85949
https://community.oracle.com/message/115842
https://community.oracle.com/message/10391751
https://community.oracle.com/message/9852155
https://community.oracle.com/message/1534062
https://community.oracle.com/message/10380181