Oracle Enterprise Manager Data Masking and Subsetting Pack can be used to create a development or test copy of a production database.

To accomplish this, you can mask this data in bulk, and then put the resulting masked data in the development or test copy.

You can still apply Data Redaction policies to the non-production database, in order to redact columns that contain data that was already masked by Oracle Enterprise Manager Data Masking and Subsetting Pack.

Remember that Oracle Enterprise Manager Data Masking and Subsetting Pack is used to mask data sets when you want to move the data to development and test environments. Data Redaction is mainly designed for redacting at runtime for production applications in a consistent fashion across multiple applications, without having to make application code changes.