Security for the Database such as hardening, can affect Symantec DLP operation.
DLP relies on the PUBLIC permissions to accomplish basic tasks with the DB. Any hardening of the Oracle database may cause issues.
Our recommendation is to not revoke any privilege that is required by DLP. This includes the PUBLIC privileges.
If you revoke a privilege from PUBLIC and assign it to the schema owner it will be on the DBA to verify that DLP still works correctly. If troubleshooting is required, we will ask that you restore the privileges to their default settings before being able to troubleshoot.
To verify the privileges that are granted to Protect on creation please see "Verify the protect database user has the correct privileges in DLP": https://knowledge.broadcom.com/external/article?articleId=160062