R12 ARCHITECTURE

R12 ARCHITECTURE


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 equivalen