Cause
In order to create a multi column datastore preference, the effective user must be ctxsys.
In order to create a multi column datastore preference, the effective user must be ctxsys.
contact your DBA to create the preference as ctxsys
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/1039697
https://community.oracle.com/message/1158594
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