OracleArea51

Directory Structure in Oracle Applications

Sunday, 14 June 2009 21:45

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There is a specific strcuture in which files are followed in Oracle application.Every directory has a particular strcuture.The R12 directory structure is a little different from the 11i.Not a major change but very few changes. So I thought of making a small article on the directory structure.

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The root structure is HOME. Under HOME we have APPS and INST directory.APPS directory has APPL_TOP and the installation of forms OH and application server 10g.The E-Business suite and Application Server used is 10g.The directory 10.1.2 belongs to form oracle home and directory 10.1.3 belongs to application server oracle home.Since these are the underlying technology they are grouped under TECH_ST.APPS_ST contains the APPL_TOP and COMMON_TOP. In apps11i the APPL_TOP directory used to have format appl, where as in R12 this has been changed as simply appl directory.

R12 Directory Structure:
diretory

INST directory is an instance directory.We have a new environment variable in R12 called as INST_TOP, which points in this directory.It contains all the config files,log files,ssl certificates,document root ect.Multiple instances can easily share the same middle tier/DB by creating a new instance_top with proper config files and nfs mount the middle tier in the server.

In 11i we have 3 top directory under HOME directory.appl which is APPL_TOP,comn which is COMMON_TOP and ora.In ora we hace 8.0.6 directory which is ORACLE_HOME for forms and iAS directory which is ORACLE_HOME for 9i Application Server.

There is a change as well in the JAVA_TOP. In R12 $JAVA_TOP is $COMMON_TOP/java/classes which contains classes and archives in $COMMON_TOP/java/lib.Where as in 11i both the archives and classes are in $COMMON_TOP/java.

In 11i release all the config/log files were in COMMON_TOP. This has been shifted to INST_TOP.The admin directory is in the $INST_TOP in R12 and the same is in $COMMON_TOP in 11i.