Steps to Recreate Oracle Central Inventory in Real Applications Clusters(RAC)

Steps to Recreate Oracle Central Inventory in Real Applications Clusters(RAC) 

1-Locate the central inventory. This is platform-specific.

UNIX/Linux:

The central inventory is pointed to by  /etc/oraInst.loc  or  /var/opt/oracle/oraInst.loc  (platform specific)

Windows:

The central inventory should always be located in %SYSTEMDRIVE%\Program Files\Oracle\Inventory - see note 552502.1 .

(This is usually C:\Program Files\Oracle\Inventory but can be located elsewhere if %SYSTEMDRIVE% is not C:)



2-Get the Oracle home names and locations of your Oracle homes by looking in the central inventory's ContentsXML folder at file inventory.xml .

Unix/Linux example:


$ cat /etc/oraInst.loc
inventory_loc=/u01/app/oraInventory
inst_group=oinstall

$ cd /u01/app/oraInventory

$ cd ContentsXML

$ cat inventory.xml
<?xml version="1.0" standalone="yes" ?>
<!-- Copyright (c) 1999, 2011, Oracle. All rights reserved. -->
<!-- Do not modify the contents of this file by hand. -->
<INVENTORY>
<VERSION_INFO>
   <SAVED_WITH>11.2.0.3.0</SAVED_WITH>
   <MINIMUM_VER>2.1.0.6.0</MINIMUM_VER>
</VERSION_INFO>
<HOME_LIST>
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0.3/grid" TYPE="O" IDX="3" CRS="true">
   <NODE_LIST>
      <NODE NAME="cetrain21"/>
      <NODE NAME="cetrain22"/>
   </NODE_LIST>
</HOME>
<HOME NAME="OraDb11g_home1" LOC="/u01/app/oracle/product/11.2.0.3/userb" TYPE="O" IDX="4">
   <NODE_LIST>
      <NODE NAME="cetrain21"/>
      <NODE NAME="cetrain22"/>
   </NODE_LIST>
</HOME>
</HOME_LIST>
<COMPOSITEHOME_LIST>
</COMPOSITEHOME_LIST>
</INVENTORY>



3-Back up the central inventory by moving it to a new location. Repeat this on all the nodes in the cluster.

UNIX/Linux example:

mv oraInventory oraInventory.orig

Windows example:

cd C:\Program Files\Oracle\Inventory
 move C:\Program Files\Oracle\Inventory C:\Program Files\Oracle\Invt_org



4-cd to the OUI bin directory.

Unix/Linux example:

cd $ORACLE_HOME/oui/bin

Windows example:

cd %ORACLE_HOME%\oui\bin



5-Execute runInstaller or setup.exe with attachHome option for OraCrsHome.

Note: The Windows executable is setup.exe, the Unix/Linux command is runInstaller. Other than that, the commands are identical. The steps below use "runInstaller" ; for Windows, substitute "setup.exe".



./runInstaller -silent -ignoreSysPrereqs -attachHome ORACLE_HOME="<oracle or grid home path>" ORACLE_HOME_NAME="<Name of oracleCRSHome>" LOCAL_NODE="<localnode>" CLUSTER_NODES="<nodelist>" CRS=true

example:

./runInstaller -silent -ignoreSysPrereqs -attachHome ORACLE_HOME="/u01/app/oracle/product/10.2.0/crs_1" ORACLE_HOME_NAME="OraCrs10g_home" LOCAL_NODE="rac1" CLUSTER_NODES="{rac1,rac2}" CRS=true

** Important: Don't forget to include CRS=TRUE for the clusterware/grid home! ***



6-Execute runInstaller with attachHome option for OraDbHome

./runInstaller -silent -ignoreSysPrereqs -attachHome ORACLE_HOME="<oracle or grid home path>" ORACLE_HOME_NAME="<Name of oracleHome>" LOCAL_NODE=<localnode> CLUSTER_NODES=<nodelist>

example:

./runInstaller -silent -ignoreSysPrereqs -attachHome ORACLE_HOME="/u01/app/oracle/product/10.2.0/db_1" ORACLE_HOME_NAME="OraDb10g_home1" LOCAL_NODE="rac1" CLUSTER_NODES="{rac1,rac2}"



6-Check the central inventory location in all the nodes to make sure the inventory was created.


7-Verify and compare XML files size inside oraInventory/ContentsXML across all the nodes.