Is OHS 10.1.3 compatible with OAS 10.1.2?

Question

I have an existing 10.1.2 standalone OHS and 10.1.2 OAS, and an existing 10.1.3 standalone OHS and 10.1.3 OAS running on different servers. I'd like to build a new server with 10.1.2 OAS and 10.1.3 OAS on it, but with a single installion of standalone OHS in front of them. I currently have OHS standalone 10.1.3 installed, has anyone had luck with this configuration? I'm not sure if my problem is a misconfiguration or if the problem is the topology.
I have 10.1.2 OAS and 10.1.3 OHS clustered, but in the OHS I'm seeing "N/A" for the protocol for the processes, and in the oc4j-status from the web server I'm not getting any processes (if I turn on the 10.1.3 OAS of course it all works as expected).
OAS 10.1.2: opmnctl status @farm -l
-------------------------------------------------------------------------------------------+------
ias-component | process-type | pid | status | uid | memused | uptime | ports
-------------------------------------------------------------------------------------------+------
OC4J | home | 6449 | Alive | 231080160 | 40648 | 22:49:42 | ajp:12501,rmi:12401,jms:12601
OHS 10.1.3: opmnctl status @cluster -l
---------------------------------------------------------------------------------------------------------+------
ias-component | process-type | pid | status | uid | memused | uptime | ports
---------------------------------------------------------------------------------------------------------+------
OC4JGroup:OC4J | OC4J:home | 6449 | Alive | 231080160 | 40648 | 22:49:38 | N/A:12601,N/A:12401,N/A:12501
Note that the protocol is "ajp" when seen from the AS, but the web server is calling it "N/A". When I look up the /oc4j-status page for mod_oc4j it's seeing no processes:
mod_oc4j Global Configuration
hostname : newserver.domain
local instance : IAS-1
select method : Round-Robin
select affinity : None
routing mode : Static
routing ID : g_rt_id
OC4J Dynamic Routing
OC4J Static Routing
destination : instance://oas_1012.newserver.domain:home
context : /something
process :
IASPT Process List
OC4J Process List
process,ias instance,host,port,status
Any ideas? I'd love to hear if anyone has had success with this setup. I'm assuming that OHS 10.1.3 works with OAS 10.1.2, but that could be my big mistake.

Answer 1

Hi Walter,
I never tried your setup..But sound interesting :)
Found few of the oracle doc which will be helpful for you.
http://www.oracle.com/technetwork/middleware/ias/ohs-101310-faq-131717.pdf
From the above link
Can an OHS of Oracle Application Server 10g Release 2 (10.1.2) be used to route requests to Oracle Application Server 10g Release 3 (10.1.3.1.0) instance?
Yes. You can configure an OHS of Oracle Application Server 10g Release 2 (10.1.2) middle-tier instance to communicate with Oracle Application Server 10g Release 3 (10.1.3.1.0) instance.
http://docs.oracle.com/cd/B31017_01/core.1013/b28940/reconfig.htm#BABIEHFI
From the above link
you can use the Oracle HTTP Server from an Oracle Application Server, Release 2 (10.1.2), middle tier as the front-end for your Oracle Application Server, 10g Release 3 (10.1.3.1.0), middle tier.
Please Take a look at below MetaLink note as well.
ID:*260449.1* Everything You Wanted to Know About the Apache-Based OHS Version
Regards
FAbian