Topic: Oracle Programming
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Oracle Export And Import Of Encrypted Columns
The Oracle Advanced Security features built into Oracle Data Pump assist customers in safeguarding sensitive data stored in dump files from unauthorized access. In Oracle Database 11 g release 1, Oracle Data Pump introduced the encrypted dump file feature.
Customers who take advantage of this feature can use Oracle Data Pump to encrypt all data as it is written to the export dump file set. The purpose of this whitepaper is to explain how the Oracle Data Pump encrypted dump file feature works. This paper does not apply to the original Export and Import utilities.
With Oracle Database 11 g release 1, Oracle Data Pump introduced a considerable improvement in security by providing dump file encryption using Oracle Advanced Security. Whereas Transparent Data Encryption (TDE) encrypted column support protects only individual columns in the dump file, dump file encryption support protects all table data and system metadata segments written to the dump file. The encrypted dump file feature is not dependent in any way on the TDE encrypted column feature described in the Oracle Data Pump Encrypted Columns Support white paper. Although both forms of encryption can be useful to keep information secure while it resides in the database, it is best to think of the two as separate features.
There may be cases in which encryption is not desirable, for performance reasons, or cases in which encryption is not needed because there is already sufficient security within the database. But whenever export dump file sets are used to transfer or archive information, security is important and the ability to encrypt the export dump file is required.
Source: download.oracle.com
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