ORA-12445: cannot change HIDDEN property of column

ORA-12445
ORA-12445: cannot change HIDDEN property of column
Cause: You tried to specify a different HIDE option for a table with an existing
policy column.
Action: Drop the column from the table and reapply the policy with the new
HIDE option.
More details : Viste http://www.high-oracle.com/ora-12445/
More details : Viste http://www.high-oracle.com/ora-12445/
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