Oracle Apps R12 File System Changes

Sometime back I discussed about R12 release dates & few major changes at Click here to check R12 release date and few changes in R12 . In today’s post I am going to cover File System changes in R12 and talk about new TOP (INSTANCE_TOP) in Application Tier.

If you are familiar with Oracle Apps 11i , you can easily understand picture on your right. This is file system for 11i with various TOP’s , APPL_TOP, ORA_TOP, COMMON_TOP, DB_TOP and DATA_TOP. With Multiple Middle Tier configuration came shared APPL_TOP (only APPL_TOP used to be shared ) . After shared APPL_TOP came shared Application Tier (All three TOP’s on Application Tier, APPL_TOP, ORA_TOP and COMMON_TOP were shared across servers). With this came challenge of configuration files which are specific to a server mainly iAS & 806 configuration file. If you have configured Shared Application Tier (sharing ORA_TOP as well) in 11i then this problem was overcome by creating conf directory in COMMON_TOP.


In Oracle Apps R12, You can see new TOP called INSTANCE_TOP in Application Tier. This TOP will now hold any configuration files (specific to that server) , Certificates (If SSL is enabled SSL Certificates & any other certificates specific to that server) and related log files or pid files (for Apache or any other process). In diagram tops with <>ST can be shared across servers (Shared Tier) and INSTANCE_TOP will be specific to Server.

Next three pictures are taken from Ivo Dujmovic’s presentation at Oracle Open World “Deep Dive: Oracle E-Business Suite Release 12 New Technology Stack“. These Pictures are self explanatory & will help you in understanding Oracle Apps R12 File System.

This shows Oracle E-Business Suite Release 12 File System Layout

This shows Directory/File Structure for Instance TOP in R12

This Picture compares file system in 11i with File system in R12

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About the Author Atul Kumar

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19 comments
Subbu says January 19, 2007

Atul,

In Release 12 Application Oracle Home comes with 10g Release1 and Database Oracle Home comes with 10g Release2.

what is the difference. why oracle dont give both with same release.

any idea atul,

Regards
Subbu

Reply
Atul Kumar says January 19, 2007

Subbu,
There are three oracle_home one for database 10.2 one for iAS webserver 10.1.3 and final one for 10.1.2 for Forms Reports. These three have different binaries & can’t share same oracle_home . Moreover what so ever is latest certified with Apps is introduced in R12 .

I hope I have cleared your doubt if not kindly elaborate your question

Reply
arshad says January 21, 2007

sorry atul i think subbus doubt waz that in e-bussiness suite oracle release 12 application oracle home is 10gR1 then why oracle home 10gR2 is not considered where as 10gR2 is certified with oracle

Reply
arshad says January 21, 2007

reply plz atul

Reply
Atul Kumar says January 22, 2007

No, As you see in pictures above database home is 10.2 only .

Regards
Atul Kumar

Reply
Anonymous says January 28, 2007

Hi Atul, I like to know about Oracle Application Object Library. Would you please post some reading stuff.

Thanks & regards
Govinda

Reply
Atul Kumar says January 29, 2007

Govinda I’ll take care of your request as soon as I find some time .

Atul

Reply
Anonymous says February 10, 2007

Thanks Atul. Will wait for it.

Cheers mate
Govinda

Reply
tim says March 18, 2007

Question – If I am running linux and want to deploy a shared file system for the apps tier NOT THE DATABASE – what options do I have besides NFS – I tried ocfs2 and it looks like Apache 10.1.3 has issues….

Reply
Atul Kumar says March 18, 2007

Tim there are third party software sharing (NetApps is one of them or may be veritas) . Can you share issues you are facing in Apache in ocfs2 (Its better to keep pid file & scoreboard file on apache on local drive for better performance)

Reply
Sunil says March 28, 2007

Hi Atul,

If I understand it correct, the new Instance_Top in Rel 12 will contain config & log files that used to be a part of appl_top or comn_top in previous releases. If that is right, can you provide any info, or direct me to a link or document, that covers which files/directories will move from old appl_top or comn_top to the new instance_top?

Regards,
Sunil

Reply
Anonymous says March 28, 2007

Hi Atul,

If I understand it correct, the new Instance_Top in Rel 12 will contain config & log files that used to be a part of appl_top or comn_top in previous releases. If that is right, can you provide any info, or direct me to a link or document, that covers which files/directories will move from old appl_top or comn_top to the new instance_top?

Regards,
Sunil

Reply
Manohar says March 31, 2007

Hi Atul,

We have installed R12 on AIX, and wnat to know either installed Vision instance is INDIA localized.
I’m not sure either it is india localized or not/shoulw we need to apply any pathces .
Please let me know on this.

Thanks,
Manohar.

Reply
Atul Kumar says March 31, 2007

You have to apply patches specific to india localization. Check in metalink for india localization patch or check with Oracle support

Reply
Michael says September 13, 2007

Thanks for the news!

Reply
R.N. CHARAN BABU says January 18, 2008

hi,

I am an Apps dba with 11 months experience.
Till date, i knew only installing, patching, creating users and assigning responsibilities.
i have even installed R12 in OEL 4.4 and applied RUP3.

i knew that this knowledge is not sufficient.i need to update in UPGRADATION, CLONING and TOOLS.

what is ur advice and preparation guide you suggest to me.

regards,
Charan.

Reply
Naveen Kumar chauhan says August 27, 2008

Hi,

how to get the india localization patch for 12.0.4.

Thanks,
Naveen

Reply
Gopalarathinam.R says December 19, 2009

Hi,

I need following clarifications. can u pls.help.

E-Biz 11i structure of appltop
==============================
/prodapps – mount point
under this /prodapps5
there is prodappl – $APPL_TOP
prodora – $ORACLE_HOME &
$IAS_ORACLE_HOME
prodcomn – $COMMON_TOP
so directories are
/prodapps/prodappl
/prodapps/prodora
/prodapps/prodcomn

How the above structure available in R12?

Can u elaborate with some example.

Thanks in advance.
GOPRAT

Reply
» Changes in Oracle E-Business Suite R12 12.2 from 12.0.x and 12.1.x Online Apps DBA: One Stop Shop for Apps DBA’s says September 21, 2011

[…] 12.0/12.1 and 12.2. If you want to see changes between Oracle Apps 11i and R12 then check here , here or Rupesh’s Posts […]

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