Adworker using wrong JDBC connect string during upgrade to 12.1.3

Our env
APPS - 12.1.2 - running on SLES 11
DB 11.2.0.3 - running on IMB System z
We cloned PROD to a new host (instance was previously on DB host - debsdb01 and app host debsap03)
The clone was made to debsdb04 - and app was reconfigured on debsap03
I got the app to start up and run before taking it down to apply the 12.1.3 patch.
However, in the process of the 12.1.3 patch, I see the following entry in the ADworker log files.
JDBC connect string from AD_APPS_JDBC_URL is
(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=YES)(FAILOVER=YES)(ADDRESS=(PROTOCOL=tcp)(HOST=hostname1.companyname.com)(PORT=1549)))(CONNECT_DATA=(SID=DEV3)))
where as it should be
JDBC connect string from AD_APPS_JDBC_URL is
(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=YES)(FAILOVER=YES)(ADDRESS=(PROTOCOL=tcp)(HOST=hostname4.companyname.com)(PORT=1535)))(CONNECT_DATA=(SID=DEV3)))
If I do an echo $AD_APPS_JDBC_URL on debspap03, it returns
JDBC connect string from AD_APPS_JDBC_URL is
(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=YES)(FAILOVER=YES)(ADDRESS=(PROTOCOL=tcp)(HOST=hostname4.companyname.com)(PORT=1535)))(CONNECT_DATA=(SID=DEV3)))
Where are the ADWORKERS getting the old value of the DB host name?
Any help would be appreciated.
Thanks
Edited by: 864641 on Sep 16, 2012 7:32 AM

I believe figured out what the issue was.
I was (am) running the patch session from a VNC session that was established during the previous version of this instance - so the previous connect string was being used.
Once I killed the old VNC session and established a new one, I was able to retrieve the correct value for $AD_APPS_JDBC_URL from the command prompt.
Yes - the value of the $AD_APPS_JDBC_URL was showing the old value in the old VNC session.
Thanks for all of your input esp on a Saturday - when I thought I would have to wait until Monday to get this figured out.

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