I have Oracle 9i installed on a Solaris 10 box and I need to install Oracle 10g. I understand that they can both co-exist. For the 9i install the Oracle_Home, Oracle_Base and Oracle_Inventory were all set up and installed under the /u01/app/oracle directory. Under this scenario, can I install Oracle 10g keeping Oracle_Base and Oracle_Inventory under /u01/app/oracle and Oracle_Home under /u01/app/oracle10g, without compromising the existing Oracle 9i installation?
Yes, you will want to leave $ORACLE_BASE as it is defined and also leave the oraInventory under this location, as is the default for Unix-based operating systems. Your installation of Oracle 10g will update information in oraInventory, which is the global inventory for that server. You will also notice further inventory information under each respective $ORACLE_HOME. This contains information about the specific components and patches installed for each $ORACLE_HOME. The global inventory located under $ORACLE_BASE will contain more general information about all Oracle installations.
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