R12 Architecture


In this post I am going to cover R12 architecture. Discernible change from its predecessors is INST_TOP.

R12 file system has come up with new model - Code, Data, Configurations are segregated nicely to have easy maintenance, to avert NFS mount issues on shared appltier configuration systems. Autoconfig will not write anything in appltop, commontop area in R12. All instance specific configurations, log files are written in INST_TOP area. Instance Home provides the ability to share Applications and technology stack code among multiple instances. I have highlighted the INST_TOP in the box. In the forthcoming posts I will clearly explain the in depth of INST_TOP(As a DBA you will spend much time in INST_TOP area when you comes to application tier node management ( e.g checking logs, starting/stopping services, ssl certificates management, CONTEXT_FILE modification etc.)

Techstack Components:

DB_TIER:
10.2.0.2 RDBMS ORACLE_HOME

APPL-TIER

10.1.2 C ORACLE_HOME / FORMS ORACLE_HOME (8.0.6 ORACLE HOME equivalence)
10.1.3 Java ORACLE_HOME/OC4J ORACLE_HOME (iAS ORACLE_HOME equivalence)

I hope you enjoyed reading this article. Next post is in-depth of R12. Stay Tuned.

9 comments:

anand said...

Nice to read ..Please post some more on R12

Suresh Lakshmanan said...

Thanks Anand.

Anonymous said...

HI Suresh,

It's very useful...
nice to read this.

Anonymous said...

Thanks Suresh, it has helped me a lot, keep it up.........

rahsha said...

Hi suresh
nice blog.it helped me alot.
thanks

Srinivas said...

Thanks a lot . suresh

Krish said...

Thanks for the post Suresh. Really helpful to me:)

Murthy said...

Hi Suresh,
Nice Post. If possible could you pls forward R12.2 architecture and file system documents to my mail_ID murthyappsdba7@gmail.com

Thanks in Advance

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