About Oracle Base Config
Both, in a read-only ORACLE_HOME and read/write ORACLE_HOME, the configuration files reside in a location known as ORACLE_BASE_CONFIG.
In a read/write ORACLE_HOME, the ORACLE_BASE_CONFIG path is the same as the ORACLE_HOME path because it is located at $ORACLE_HOME. However, in a read-only ORACLE_HOME, the ORACLE_BASE_CONFIG path is the same as ORACLE_BASE.
ORACLE_BASE_CONFIG/dbs
contains the configuration files for ORACLE_HOME. Each file in the dbs
directory contains $ORACLE_SID so that the directory can be shared by many different ORACLE_SIDs.
To print the ORACLE_BASE_CONFIG path, run the
orabaseconfig
command from the $ORACLE_HOME/bin
directory:$ setenv ORACLE_HOME /u01/app/oracle/product/19.0.0/dbhome_1
$ cd $ORACLE_HOME/bin
$ ./orabaseconfig
For example:
$ ./orabaseconfig
$ /u01/app/oracle
Where, /u01/app/oracle
is ORACLE_BASE.
Parent topic: Understanding Read-Only Oracle Homes