Cause
The policy did not authorize the database session to perform the requested operation.
The policy did not authorize the database session to perform the requested operation.
Grant the user or program unit the necessary policy privilege or additional authorizations.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12400.htm
https://community.oracle.com/message/9243032
https://community.oracle.com/message/10426336
https://community.oracle.com/message/1847773
https://community.oracle.com/message/3213788
https://community.oracle.com/message/1850069
https://community.oracle.com/message/1855305
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