Oracle eBS Architecture - File System R12

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Below are the main components of Oracle Applications R12 file system :

• APPL_TOP          - Main Oracle applications files, environment file and product specific sub directories
• COMMON_TOP - Files shared across the products including log/out and exe(class files)
• INST_TOP           - Instance Specific configuration and log files are stored here. Using for configuring multiple OC4J/Apache ports as well. Multiple application server configurations result in multiple instance tops for the single installation of oracle applications in R12
• Tech Stack            - Oracle Developer 10g(Forms 10g, Reports 10g) components 10.1.2 ORACLE_HOME, Oracle Applications  Server  10.1.3 ORACLE_HOME and Oracle Database(certified   version) in its own ORACLE_HOME 10.2.0

Database TierGenerally owned by file system user (ORACLE)

DATA_TOP : xxx/db/apps_st/data
                      Oracle Applications Database files

ORACLE_HOME : xxx/db/tech_st/10.2.0
                               Oracle 10g DB Software installation files

Applications Tier
Generally owned by file system user(APPMGR)

APPL_TOP:          xxx/apps/apps_st/appl
                             Oracle Apps Product files
COMMON_TOP:  xxx/apps/apps_st/comn
                              Shared files and Directories(log files, class files, html files, xss etc)
ORA_TOP:             xxx/apps/tech_st/10.12
                                10.1.2 Techstack (Forms 10g, Reports 10g)

                               xxx/apps/tech_st/10.1.3
                                10.1.3 Techstack (OC4J, Apache)

Instance Home

INST_TOP: xxx/inst/apps/<ctx_name>
                    Instance Specific configuration/log files



xxx - Applications Base directory