How to solve Oracle Database Error 12856 (ora-12856)

Oracle Error Code
   ora-12856

Description
   cannot run parallel query on a loopback connection

Cause
   A table or index in a parallel query is referenced via a loopback connection.
How to Solve
   Do not use loopback connection when running a query in parallel.
Posts About Oracle Database Error ORA-12900
mohinder:
display the ename,salary,deptno,maximum salary from all employee 
who earn less than the maximum salary in their department


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Similar Errors
  ORA-12800    ORA-12801    ORA-12802    ORA-12856    ORA-12872    ORA-12899    ORA-12900  Others

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