Home > Storage > Unity XT > Virtualization, Cloud & Applications > Dell Unity XT: Oracle Database Best Practices > ORACLE_HOME and ORACLE_BASE_HOME
Starting with Oracle 21c, after the Oracle installation, ORACLE_HOME is configured as read-only. With a read-only ORACLE_HOME, all user- and instance-specific files, log files, trace files reside in a location known as ORACLE_BASE_HOME.
With a read-only ORACLE_HOME, ORACLE_BASE_HOME is set to:
$ORACLE_BASE/homes/<HOME_NAME from inventory.xml>
Performing the following will return the value of ORACLE_BASE_HOME:
[oracle@r730xd-1 ~]$ cd $ORACLE_HOME/bin
[oracle@r730xd-1 bin]$ ./orabasehome
/u01/app/oraclel/homes/OraDB21Home1
[oracle@r730xd-1 bin]$
For more information, see Oracle 21c Database Installation Guide.