Import an application page

Question

Hello everyone,
I'm trying to import a pageA from applicationA in workspaceA to applicationB in workspaceB. pageA is a blank html page. (I'm just doing a test) When I install this pageA in applicationB(this is a new created application just used for testing import), I'm getting an error:
Page Origin: This page was exported from a different application or from an application in different workspace. Page cannot be installed in this application.
I tried the export file format both in unix or dos, and got the same error.
Can anyone help?
Thank you for your kind concern,
Emily

Answer 1

In the page export you will find the following section:
begin
-- SET FLOW ID
wwv_flow.g_flow_id := 132;
wwv_flow_api.g_id_offset := 0;
null;
end;
The g_flow_id is your application ID.
1) change this to the target application ID
2) set the offset to the difference between the same object id in your source application and the object id in your target application.
You can compute the difference using a statement like the following:
select offset, id_source + offset total, id_target from (
select id_target, id_source , id_target - id_source offset from
(select 209935759755965816 id_target, 66694030453389008 id_source from dual))
You can get an object ID by exporting both applications and finding for example a wwv_flow_api.create_report_region that is for the same region in both applications.
No guarantee that this will work perfectly unless the two applications started as a copy of the same application. But, you will at least get close.
I recommend saving off a full export of the target application, so if you mess-up you can restore it.
An alternative is to use a separate development environment to do the page load and then export both the development and production versions of the application to get the offset just right.
I found this works great to move pages from my development environment to my production environment where my applications are pretty close.