How to Recreate the OraInventory on UNIX Systems

How can I recreate the OraInventory  if it gets  removed

1. Locate the oraInst.loc file, which may be in different locations, depending on your system
   /var/opt/oracle/oraInst.loc file
   or
   /etc/oraInst.loc
2. Modify the file oraInst.loc file
   cp /etc/oraInst.loc /etc/oraInst.loc.bak     #e.x for AIX run with rot
   
   mkdir /data1/oracle2/oraInventory          #path is examp.Change it .run with oracle owner user
3. Change oraInst.loc
   inventory_loc=/data1/oracle2/oraInventory
   
   inst_group=oinstall #it can be also dba
4. Change the permissions
   chmod 644 /etc/oraInst.loc
5. For consistency, copy the file to Oracle home directory, (using your directory location):
   
   cp $ORACLE_HOME/oraInst.loc $ORACLE_HOME/oraInst.loc.bak
   
   cp /etc/oraInst.loc                  $ORACLE_HOME/oraInst.loc
6. Run Oracle Universal Installer from your Oracle home as below:
   
   cd $ORACLE_HOME/oui/bin
   
   ./runInstaller -silent -attachHome ORACLE_HOME="/data1/oracle2/orahome10gr2" ORACLE_HOME_NAME="PARTEST"
   
   Note: The -attachHome is only officially supported in 10.2 and higher. But, we found it works on our testing with 10.1.2
7. Check the inventory output is correct for your Oracle home:
   $ORACLE_HOME/OPatch/opatch lsinventory -detail