Oracle Apps 11i and R12 Context/Environment Files/Variables

INST_TOP is newly introduced in R12. Following figures show the snapshot of file structures both in R11i and R12.

Important File Locations

File	Oracle Apps 11i	Oracle Apps R12
Environment Source file	APPSORA.env	APPS<SID>_<hostname>.env
Context File (Middle tier)	$APPL_TOP/admin/$TWO_TASK.xml	$INST_TOP/appl/admin/$TWO_TASK_<hostname>.xml
tnsnames.ora (OH)	$ORACLE_HOME/network/admin/<CONTEXT>	$INST_TOP/ora/10.1.2/network/admin
listener.ora	$ORACLE_HOME/network/admin/<CONTEXT>	$INST_TOP/ora/10.1.2/network/admin
appsweb.cfg	$OA_HTML/bin	$INST_TOP/ora/10.1.2/forms/server
tnsnames.ora (Apache)	$IAS_ORACLE_HOME/network/admin/<CONTEXT>	$INST_TOP/ora/10.1.3/network/admin
jsev.properties	$IAS_ORACLE_HOME/Apache/Jserv/etc	$INST_TOP/ora/10.1.3/opmn/conf/opmn.xml
httpd.conf	$IAS_ORACLE_HOME/Apache/Apache/conf	$ORA_CONFIG_HOME/10.1.3/Apache/Apache/conf
apps.conf	$IAS_ORACLE_HOME/Apache/Apache/conf	$ORA_CONFIG_HOME/10.1.3/Apache/Apache/conf
formservlet.ini	$IAS_ORACLE_HOME/Apache/Jserv/etc	$ORACLE_HOME/forms/server/default.env
topfile.txt	$APPL_TOP/admin	$APPL_CONFIG_HOME/admin
adovars.env	$APPL_TOP/admin	$APPL_CONFIG_HOME/admin
adjborg2.txt	$APPL_TOP/admin	$APPL_CONFIG_HOME/admin
SSL Certificates	$COMMON_TOP/admin/certs	$INST_TOP/certs
AD scripts logs	$COMMON_TOP/admin/log/<SID_hostname>	$LOG_HOME/appl/admin/log
Concurrent Request logs	$APPLCSF	$APPLCSF
Apache logs	$IAS_ORACLE_HOME/Apache/Apache/logs	$LOG_HOME/ora/10.1.3/Apache
Jserv logs	$IAS_ORACLE_HOME/Apache/Jserv/logs	$LOG_HOME/ora/10.1.3/j2ee
javacache.log	$COMMON_TOP/rgf/<SID_hostname>	$LOG_HOME/appl/rgf

Environmental variables

Variable	Oracle Apps 11i	Oracle Apps R12
APPL_TOP	$HOME/<SID>appl	$HOME/apps/apps_st/appl
COMMON_TOP	$HOME/<SID>comn	$HOME/apps/apps_st/comn
ORACLE_HOME (applmgr)	$HOME/<SID>ora/8.0.6	$HOME/apps/tech_st/10.1.2
IAS_ORACLE_HOME	$HOME/<SID>ora/iAS	$HOME/apps/tech_st/10.1.3
ORACLE_HOME (oracle)	$HOME/<SID>db/10.2.0	$HOME/db/tech_st/10.2.0
ORADATA	$HOME/<SID>data	$HOME/db/apps_st/data
JAVA_TOP, OA_JAVA	$COMMON_TOP/java	$COMMON_TOP/java/classes
OA_HTML	$COMMON_TOP/html	$COMMON_TOP/webapps/oacore/html
FND_SECURE	$FND_TOP/secure/<SID>	$INST_TOP/appl/fnd/12.0.0/secure
ADMIN_SCRIPTS_HOME	$COMMON_TOP/admin/scripts/<SID>	$INST_TOP/admin/scripts
LOG_HOME	-	$INST_TOP/logs
FORMS_WEB_CONFIG_FILE	-	$INST_TOP/ora/10.1.2/forms/server/appsweb.cfg
AF_JLIB	-	$COMMON_TOP/java/lib
JAVA_BASE	-	$COMMON_TOP/java
INST_TOP	-	$HOME/inst/apps/<CONTEXT>
ORA_CONFIG_HOME	-	$INST_TOP/ora
APPLCSF	$COMMON_TOP/admin	$LOG_HOME/appl/conc

Visit this link for more info about file systems in Oracle Apps.