Feedback Loop in EBS 12.2

EBS application layer has changed significantly in release EBS 12.2. There are two oracle homes here

1. 10.1.2-Oracle AS  tools or developer tools

2  Oracle AS 10.1.3 is now replaced by fusion middleware home

In the previous release of EBS oacore,oafm, forms and forms-c4ws was deployed in OC4J. Thus one run of autoconfig used to change all the configurations files. But in EBS 12.2 OC4J is replaced by weblogic server, thus EBS components are deployed in the managed servers. 

All properties of managed servers are managed using weblogic tools like admin console. So now to sync the context file and OHS configuration in weblogic, there is a mechanism introduced in EBS12.2 . This mechanism is known as feedback loop and it is invoked by 2 scripts.

adRegisterWLSListeners.pl is used to update the XML file listening to Weblogic parameter changes. This script is invoked automatically on the primary node every time Weblogic administrator server is started in UNIX machines.

adSyncContext.pl is for explicitly pulling the values of Weblogic server and HTTP server parameters to synchronize corresponding context variable values.

We did some changes by using Fusion middleware admin console.

These changes have to be in sync with context file. To do that

You will need to run the following steps on all application nodes:

Go to cd $AD_TOP/bin/

perl <AD_TOP>/bin/adSyncContext.pl contextfile=<CONTEXT_FILE>

This will read the WLS configuration parameter values and synchronize them with the context variables.

Run The Autoconfig on All App Nodes.

These are some of the activities which autoconfig cannot manage by itself completely.