How to use Edition Based Redefinition in APEX?

Hello,
This might be my first question on this forum ;-)
I am trying to get 11gR2 Edition Based Redefinition to work within APEX. But for testing purposes (before altering the database to use the new edition as the default) I have to set the edition at the session level. But as APEX shares sessions from the pool (I might get another session with every page refresh/call), I need to execute an ALTER SESSION command.
I can't use EXECUTE IMMEDIATE, 'cause that results in:
execute immediate 'alter session set edition=HR_RELEASE2';
ORA-38815 : ALTER SESSION SET EDITION must be a top-level SQL statement
So is there a way to just run a SQL command at the "start" of a page (request)?
Greetings,
Roel
http://roelhartman.blogspot.com/
Edited by: Roel on Feb 28, 2010 7:00 PM
- Changed the subject of this post (for an easier search on the forum)

Hello all,
Patrick and John were on the right track...
After contacting Bryn (the Oracle brain behind EBR), there appeared to be a DAD attribute called 'database-edition'. Using this you can change the Edition of a DAD (and via the DAD ... all the users that use that DAD):
begin
dbms_epg.set_dad_attribute('APEX', 'database-edition', 'HR_RELEASE2');
end;The funny thing is that a user doesn't have to re-connect. With the next server roundtrip he will use the other edition!
Remarkable fact: This setting doesn't effect the Session-Edition, but only the Current-Edition. Have to test how that'll work out when using CrossEdition Triggers...
Another thing: There seems to be an equivalent for the Apache /HTTP Server.
You have to add a line to your dads.conf setting for PlsqlDatabaseEdition.
If I add that line (in my environment) the HTTP Server fails to start with:
/home/oracle/OraHome_1/Apache/Apache/bin/apachectl start: execing httpd
Syntax error on line 48 of /home/oracle/OraHome_1/Apache/modplsql/conf/dads.conf:
Invalid command 'PlsqlDatabaseEdition', perhaps mis-spelled or defined by a module not included in the server configurationApart from that: You have to restart the HTTP Server to use the changed DAD. So that is in opposite of the whole goal of EBR (24 x 7 availability).
Once I figured it all out I'll write a blog post about it. If somebody has anything to add to this thread, feel free! Especially the HTTP Server/Edition combination would be interesting!
Greetings,
Roel
http://roelhartman.blogspot.com/

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>
The problem is even if we have private objects in our own schema, those would not be referenced since developers login to the app using the main schema bcos of object access restrictions and other thing is most of the code references objects using main schemaname.object (old code) and not much synonyms.
>
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>
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From: Adobe Forums <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
Date: Thu, 20 Oct 2011 03:03:46 -0700
To: Leonard Rosenthol <[email protected]<mailto:[email protected]>>
Subject: how to use ICC based colorspace
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Thanks for all replies.

Online index rebuild and Online table redefinition require EE version - http://download.oracle.com/docs/cd/E11882_01/license.112/e10594/editions.htm#CJACGHEB
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