Your change is okay. You can enable Oracle encryption (sometimes called TDE) support in the following way.
Encryption on ORACLE requires an additional clause in Database connect string:
Example with encryption:
This will need to change EVERYWHERE -- each ''encrypted'' project will need to be ''fixed'' to point to the schema this way as well (remove edit DBID to change connect string,
restore). It has to change on the DB-Servers tab, AND it has to change in Siteadmin.xml as well.
This is as big of a change as changing Database Servers, so be careful!