Comparison Between Apps 11i and Release12

Compare TOPS in apps 11i and release12. Let's have a look at the technology stack using both release 11i and 12.
Oracle ebusiness-suite release 12 technology stack


Database :
Database Version using in 11i (11.5.9 & 11.5.10) was 9i where in Release 12 it is 10g R2 (10.2.0.2) and for Release12.1.2 it is using database 11.1.0.7


Application Tier:
Tech Stack in Application Tier consist of iAS(1.0.2.2.2) & Developer 6i (Forms & Reports 8.0.6) but in Applications R12 it is built on Fusion Middleware (10g Web Server and 10g Forms & Reports)

Sub component in Application Tier:

• HTTP Server or Web Server in R12 is Version 10.1.3 which is built on Apache version 1.3.34. In apps 11i it is Version 1.0.2.2.2 built on Apache Version 1.3.19
• Jserv in apps 11i is replaced by OC4J (mod_jserv is replaced by mod_oc4j)
• Forms Version 6i in Apps 11i is replaced by Forms 10.1.2.0.2 in R12
• Reports Version 6i in Apps 11i is replaced by Reports 10.1.2.0.2 in R12
• JDBC version is changed from version 9 in apps 11i to version 10.2.0 in Apps R12
• modplsql or mod_pls is removed from Apps R12
• Java processes use JDK/JRE version 1.5.0 in R12 against JDK version 1.3.1 or 1.4.2 in Apps 11i.

If we look at below picture, we will find various environment variable changes and one new top is added in Release 12 for configuration and log files is called INSTANCE_TOP.


Below picture shows the latest R12 TOPS


Below picture shows 11i TOPS