Cause: A policy with the same name for
the same object already exists.
Action: Check if the policy has already
been added or use a different policy name.

Relared Errors:
ORA-28102:
policy does not exist
ORA-28103:
adding a policy to an object owned by SYS is not allowed
ORA-28104:
input value for string is not valid
ORA-28105:
cannot create security relevant column policy in an object
view
ORA-28106:
input value for argument #string is not valid
ORA-28107:
policy was disabled
ORA-28108:
circular security policies detected
ORA-28109: the
number of related policies has exceeded the limit of 16
ORA-28110:
policy function or package string.string has
error
ORA-28111:
insufficient privilege to evaluate policy predicate