Data Integrity Algorithms Support
Data integrity algorithms protect against third-party attacks and message replay attacks. Oracle recommends SHA-2, but maintains SHA-1 (deprecated) and MD5 for backward compatibility.
Note: MD5 is deprecated in this release. To transition your Oracle Database environment to use stronger algorithms, download and install the patch described in My Oracle Support note 2118136.2.
These hashing algorithms create a checksum that changes if the data is altered in any way. This protection operates independently from the encryption process so you can enable data integrity with or without enabling encryption.