What’s Different TOP’s in Application 11i

If you want to learn apps dba or want training in apps dba and going through this documentation you might be confused to see again & again that everybody is talking about & its quite difficult to unserstand any topic without knowing what the hell is different tops like APPL_TOP , COMMON_TOP or what eaxctly is TOP ?
For me TOP is nothing but top level directory & preceded by related software . So TOP is top level directory in file system or oracle 11i software .
If you have done 11i or oracle application Installation by now ( if not please go though my training for apps dba in my previous posts) Oracle Installer Installs Apps 11i in DB Tier & Application Tier : so lets take Application Tier you will see three directories under your base Installation directory, these diretories are APPL, ORA & COMN (Check pic. at left top of this page) so directory APPL is called as APPL_TOP i.e. top appl directory where files & directories related to different Application ( like GL General Ledger, PO Purchase Order..) exists. If You are DBA you can correlate it with your Oracle database software installation (I know after reading this example you will say its weird but believe me thats how understood it initially , ORACLE_HOME can be called as ORA_TOP , network directory you can say TNS_TOP )
Under ( ORA_TOP ) you will see diretcory related to oracle home , there are two oracle HOME’s in Application Tier 8.0.6 for Forms & Reports , iAS for 9iAS acting as web server)
COMN_TOP will contain files & directories which will be used commonly by all components ( Isn’t this simple to understand )
IAS_TOP is top files/directory under ORA_TOP/iAS I hope it might be clear to you now if not donot worry it will be more clear once you start working as Apps DBA.
I am attaching few screenshot of other mount points ( Courtsey oracle 11i concepts guide , below is location if you want to read .
acrobat/11iconcepts.pdf ( Add these three lines before putting in to browser , I have not put it in single line as it breaks my page layout )
So In this guide you will find few more screenshot of different TOP’s , Go through Chapter 2 , Just 13 Pages ( 13 unlucky number for someone but if understand this chapter , it can be very lucky for you in your Apps DBA Career.

So here I conclude my TOP’s Section , Please don’t forget to leave feedback & what you want hear next.

You can find some comanies on right side or top of this page who might be looking for Apps DBA , visit them by clicking & go to Career section to look for Apps DBA opportunity.

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About the Author Atul Kumar

Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Specialising in Design, Implement, and Trainings.

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Leave a Comment:

Anonymous says August 6, 2006

Hey good doc….
Want to know more about common top.

Atul Kumar says August 7, 2006

I will add more about common top in a day or two in same post.

Anonymous says September 13, 2006

Hello Greate effort man
Good luck and thanks,,,,

Vidya Balasubramanian says October 2, 2006

organized approach for somebod with DBA experience to jump into Apps – thanks for all your effort to help the community

Anonymous says December 2, 2006

It is realy grate for me, since i’m newbi to apps dba looking for something like this only, who can explain me from the start.
Realy grate efforts,
Thanks Boss,
Ravi Purbia

Atul Kumar says December 2, 2006

Thanks a lot . Leave your comments on any topic in apps on which you want to hear from me. Anything from Apps to applications server to portral to collaboration suite ….

Anonymous says March 1, 2007


I am a Fresher and I m recruited for Apps DBA..As the subject is huge just tel me how to proceed in order to be master in Apps

Atul Kumar says March 1, 2007

Follow Menu Bar at Left Under Beginners Section

Rohit says April 1, 2007

Your docs. are very useful !!!
Thanks a lot!!!!!!!!!!

sreenivas says May 30, 2007

Hi atul

I am getting this error.
can u give some solution for this.

FRM-91500: Unable to start/complete the build.
[oracle@linux ~]$ f60gen
FRM-91500: Unable to start/complete the build.


Atul Kumar says May 30, 2007

For any apps issues raise them in forum at http://teachMeOracle.com/forum

nagesh says June 15, 2007

Hi atul,

I think it really opened door for me.

Really im thankful to you, You are a excellent teacher, its from bottom of my heart.


Nagesh Prabhu.

Anonymous says July 20, 2007

hey atul thnk u for the valuable docc…can u paste something more abt these appl_top,comn_top,ora_top in detail…thnk u
kumaravel vivekanandam

Anonymous says July 20, 2007

can u explainmore abt appl,comn,ora_tops

kumaravel says July 20, 2007

can u posta ore abt appl,comn,ora_top

Atul Kumar says July 20, 2007

Sure, Do let me know what you want to know more in appl, common or ora top

Anonymous says August 20, 2007

Great Mentor……and a GR8 style..

Poonam says September 7, 2007

Your Links and Documents are very helping for the fresher guys.
Thanks alot for giving such a nice documents.
I have 1 Year experience n now after 1 year when i read your documents my concepts are clear.
Thanks Sir, Thanks alottttttttt

Poonam says September 7, 2007

Hi Atul ,

Can u tell me how we can convert the invalid objects into valid objects.

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