ORA-12442: policy column "string" already used by an existing policy

ORA-12442
ORA-12442: policy column "string" already used by an existing policy
Cause: You tried to create a policy with the same policy column name as an
existing policy.
Action: Use a different name for the policy column or drop the existing policy.
More details : Viste http://www.high-oracle.com/ora-12442/
More details : Viste http://www.high-oracle.com/ora-12442/
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