AQ and CORBA

Question

What is the relationship between ORACLE-AQ and CORBA (for example, iona) ?
It looks to me that AQ seems replace CORBA. Am I right ?
If I already have a distributed application using CORBA,
can I still be benefited by adding AQ to my existing CORBA application ?
THX

Answer 1

Here are some questions from Vadim Katz and answers from the OTN developers who built the AQ Hotel sample app:
I was able to compile the whole projects but only after doing the following:
1) Adding JBO 8i Client library which contains
javax.jts.UserTransaction. This is not mentioned in the example guide
and UserTransaction is not a part of Sun's javax.jts packageThe AQ EJB/CORBA Sample was developed using JDeveloper 2.0. In JDeveloper 2.0, the CORBA library contains aurora_client.jar, and aurora_client.jar contains classes like javax.jtx.UserTransaction, etc.
JDeveloper 3.1does not include the CORBA library by default, and that is why you need to add JBO 8i Client, etc.
> 2) I also had to compile HotelSystemSQLJ.sqlj file to get .class file;
> otherwise, during global project rebuilt I was only getting .ser file.
> Missing .class file was causing compilation errors.
JDeveloper requires you to first compile HotelSystemSQLJ.sqlj and HotelSQLJ.sqlj separately. These steps are
mentioned in the README.txt.
3) FINALLY, A BIG QUESTION. Why does travel8i.dmp modify SYSTEM TABLES
and because of that user "travel" is required to have SYS priveledges???The Sample requires a TRAVEL user with Sample Travel Data. We could have asked the user to create a separate tablespace and import travel8i.dmp into it, but that would increase the installation steps. For
simplicity, we create the TRAVEL user in the SYSTEM tablespace.
When you want to delete example data, simply drop the "TRAVEL" user.
The AQ Sample needs access to DBMS_AQADM and DBMS_AQ packages which are present in SYS user.
I hope this helps,
-rh