Oracle HTTP server, Oracle 9iAS server, Oracle APPS 11i

Question

Hi, expert:
I was reading the Oracle Applicaitons Concepts (11i). There three tiers in Apps. In the middle tier there are: Web Server, Forms Server, Concurrent Processing Server, Reports Server and Admin Server.
But when I look our company's EBS architecture below (middle tier only here), I am confused. Does 9iAS includs HTTP server? Or 9i is the middle tier? what is Apps 11i? We have Unix and 11.5.10.2.
Oracle HTTP server
Oracle 9iAS
Oracle Apps 11i
Forms server
Concurrent Manger
Really appreciate you to help me.
Edited by: 870765 on Jul 13, 2011 9:41 AM

Answer 1

Oracle HTTP server
Oracle 9iASThis is the web service component -- $IAS_ORACLE_HOME
If you stop those services you will not be able to access the main login page or any Self-Service page in the application.
Oracle Apps 11iThis is the application release (which is a group of components/tiers) -- 11i means 11.5.x (where x is from 1 to 10) or 11.5.10.1 (CU1), 11.5.10.2 (CU2)
Oracle Apps 11i comes with 3 ORACLE_HOMEs (Web: $IAS_ORACLE_HOME, Developer (Forms/Reports): 8.0.6 ORACLE_HOME, Database: $RDBMS_ORACLE_HOME).
Oracle Apps 11i = Oracle Application Tier ($APPL_TOP, $COMMON_TOP, iAS ORACLE_HOME, 8.0.6 ORACLE_HOME) + Oracle Database Tier (RDBMS ORACLE_HOME).
Forms serverThis is Oracle Developer 6i home -- 8.0.6 ORACLE_HOME
If you stop the forms server you cannot open any form.
Concurrent MangerThis component is not represented in a separate ORACLE_HOME and the executable files can be found under $APPL_TOP directory ($FND_TOP/bin).
If you stop the CM, you cannot submit concurrent requests but you can still access the application and open the forms.
If you stop the database, you cannot access any part of the application.
Thanks,
Hussein