Multiple OHS in single host?

Question

I am newbie to Oracle AS, will like to test the web cache with load balancing to 2 OHS. Can I have mutiple OHS in single host? Do I have to install sepearate binary for each OHS?
What about install web cache standalone? If I use the Oracle CD it will install J2EE and Web Cache. How to install just Web Cache?

Answer 1

Hi,
The error message is correct. When you want to map the same Web cache to 2 servers, you can do one of the following:
Consider the servers to be called s1 and s2.
Option 1:
If you want Web Cache to communicate with s1 and s2 through the same port, then do the following:
1) Open Web cach's Admin UI
2) Go to 'Site-to-Server Mapping' page
3) Select the mapping you have currently
4) Click 'Edit Selected'
5) In the 'Edit/Add Site-to-Server Mapping' pop-up that appears, you can see a section titled ' Select Application Web Servers'. Under this, you will be able to see both s1 and s2 (if you have added them through the Origin Servers page). Select both s1 and s2.
6) Click 'Submit'
7) 'Apply Changes'
8) Restart Web cache
And there you go!
Option 2:
1) Add some unused port as the 'Listen port' of Web Cache through the 'Listen Ports' page
2) Then in 'Site Definitions' page, add the host_name:new_listen_port as a site
3) In 'Site to Server mapping' page, select some existing mapping, then click 'Insert above/below' and do the mapping between the new site and the second server.
4) apply changes
5) restart web cache
and that's it!
Regards,
Priya G S
Oracle Web Cache Team