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Hi ,
pls check in the below website
teachmeoracle.com/arch.html
Broadly Oracle 11i has been divided into two parts application tier and database tier , we have three Oracle Home ,
$ORACLE_HOME for oracle database
$ORACLE_HOME in application for Tech steck, we
have 8.0.6 oracle which FORMS and Reports use to get the database connectivity.
$IAS_ORACLE_HOME Oracle Apache Home/web server, which will be used by Apache , web server.
In Application Tier 3 imp file system :-
we have $ORCALE_HOME
$APPL_TOP Under this Dir we have all the configuration file including our context and .env file
$COMMON_TOP Having ,All the important scripts
$APPLLOG/$APPLCSF Log file dir ,
all the modules executables are residing under his own top as eg,$PO_TOP
and $AU_TOP
There is lot more i ill keep on writting.
In database We have only important Dir $ORACLE_HOME
$ORACLE_HOME/appsutil which is having all the scripts.
I have described very briefly , you need to go through document .
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