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ORA-12856: cannot run parallel query on a loopback connection

ORA-12856: cannot run parallel query on a loopback connection

Cause:

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

Action:

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

Tips for Oracle DBA

Oracle DBA, How To, Error, Cause and Action

ORA-12856: cannot run parallel query on a loopback connection

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