Cause
invalid operand type for EQUIV operator
invalid operand type for EQUIV operator
correct operand type
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/9654707
https://community.oracle.com/message/3210327
https://community.oracle.com/message/152746
https://community.oracle.com/message/3860527
https://community.oracle.com/message/9763079
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