ORA-28100
VPD policy function does not exist.
Cause
The schema owning the Virtual Private Database (VPD) policy function did not exist.
Action
Drop the VPD policy and re-create it with a policy function owned by a valid user.
ORA-28100
policy function schema is invalid
Cause
The schema in which the policy function was defined did not exist.
Action
Drop the policy and re-create it with a policy function owned by a valid user.
ORA-28100
policy function schema string is invalid
Cause
The schema was dropped after the policy associated with the function had been added to the object.
Action
Drop the policy and re-create it with a policy function owned by a valid user. Or re-create the user and the policy function under the new user.
