How to Encrypt Sourcing Sensitive Information at Database Level

Hi

Case

we have implemented oracle sourcing application recently. data are secured on application level.

For database level. our organization outsource technical consultants to handle business team reporting requirements. therefore, they should have access to sourcing database which is NOT secure.

So, what are your suggestions to do the following:

- Encrypt Sourcing Sensitive Information at Database Level?

     - is there a standard solution to handle this request? is there any Oracle official document to support this solution?

- Is there any request to to randomly change stored data (e.g. update actual data such as quote prices with fake date)?

     - this tool, request will grantee to perform the development of required custom report without get actual information.