How to Recreate the OraInventory

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How can I recreate the OraInventory if it gets corrupted or removed? Solution In cases where the OraInventory is missing or otherwise corrupt, recreate the oraInventory directory on UNIX systems, using the following steps. In a normal installation, there is a Global Inventory (OraInventory) and a Local Inventory ($ORACLE_HOME/inventory). 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 Modify the file oraInst.loc file:       cp /var/opt/oracle/oraInst.loc /var/opt/oracle/oraInst.loc.bak       mkdir /u01/oracle/oraInventory       ---file contents---       inventory_loc=/u01/oracle/oraInventory       inst_group=oinstall       ---file contents--- Important: Theses example uses a typical directory, considered an $ORACLE_BASE, and a typical UNIX group which installed the Oracle products. Ensure that the correct values are used for your system. The oraInventory directory is usually a directory under the $ORACLE_HOME. For example, if the $ORACLE_HOME  is equal to "/u01/oracle/product/10g", then the OraInventory could be "/u01/oracle/OraInventory". Change the permissions to be appropriate, (using your directory location):       chmod 644 /var/opt/oracle/oraInst.loc For consistency, copy the file to Oracle home directory, (using your directory location): cp $ORACLE_HOME/oraInst.loc $ORACLE_HOME/oraInst.loc.bak cp /var/opt/oracle/oraInst.loc $ORACLE_HOME/oraInst.loc Run Oracle Universal Installer from your Oracle home as below, (using your site specific directory location and Oracle home name): cd $ORACLE_HOME/oui/bin ./runInstaller -silent -attachHome ORACLE_HOME="/u01/oracle/product/10.2" ORACLE_HOME_NAME="Ora10gHome" Check the inventory output is correct for your Oracle home:       $ORACLE_HOME/OPatch/opatch lsinventory -detail If the table at the beginning of the output is showing the proper directories, and the Oracle home components are properly reflected in the details, then the Global Inventory has been successfully created from the Local Inventory. At this time, you may patch an maintain your Oracle home, as normal.