cannot run parallel query on a loopback connection

Solution ID:ORA-12856

Type: Oracle

Cause

A table or index in a parallel query is referenced via a loopback connection.

Actions

Do not use loopback connection when running a query in parallel.

Try the following links for this error:


http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm


https://community.oracle.com/message/2579299


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