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Re-create oraInventory with Oracle Universal Installer

Expert Oracle Database Tips by Donald BurlesonJanuary 24, 2015

Question: I lost my oraInventory files. How can I re-create the inventory for my Oracle installation?

Answer:  Oracle Universal Installer enables you to set up the Central Inventory or register an existing oracle_home with the Central Inventory in case of inventory corruption or loss.

You need to execute the command with the -attachHome flag.

With Oracle Universal Installer (OUI), you can set the Central Inventory up on a clean host.  You can also register an existing Oracle home with the Central Inventory when it becomes corrupted or lost.

OUI will create the Central Inventory if it does not already exist.  It will put it in the location specified by the oraInst.loc file.

RAC

 The syntax for a RAC environments is as follows:

./runInstaller -silent -attachHome oracle_home="<oracle_home_location>"
"cluster_nodes={<node1, node2>
}" local_node="<node_name>"

The following session variables are also available:

  • oracle_home
  •  cluster_nodes
  • remote_nodes
  • local_node

 If the cluster_nodes session variable is not passed in a cluster environment, OUI will take it from the following file:

 $oracle_home/inventory/ContentsXML/oraclehomeproperties.xml

 If the local_node session variable is not passed, OUI takes it from the following file:

 $oracle_home/inventory/ContentsXML/oraclehomeproperties.xml

If an entry is not found there, it takes it from the Oracle Clusterware stack.

 If it is not able to find it in the stack, the first node of the cluster_nodes is taken as the local_node. The remote_nodes variable can be passed to specify the list of remote nodes.

To set the Central Inventory up in the local node, the -local flag will be passed, and the remote_nodes variable will be left empty. The Oracle standard syntax is:

./runInstaller -silent -attachHome -invPtrLoc ./oraInst.loc
oracle_home="
<oracle_home_location>" "remote_nodes={}" -local

Using the -local flag, causes the action to be performed on the local node without regard to the cluster nodes specified.

Non-RAC

For a non-RAC setup, it is not necessary to pass the local_node variable, and the cluster_nodes variable remains empty.

The Oracle standard syntax for non-RAC is:

./runInstaller -silent -attachHome -invPtrLoc ./oraInst.loc
oracle_home="<oracle_home_location>
" "cluster_nodes={}"

Again, the -local flag can be used to attach the local Oracle home. The -cfs flag should be used with a shared Oracle home with the -local flag. This way the local node information will not be populated inside a shared Oracle home.

 After the Oracle home has been attached, the success of the operation can be verified by verifying the contents of the log file present in the <central_inventory>/logs directory.

It is also possible to view the contents of the inventory.xml file to verify the Oracle home is registered.  The inventory.xml file can be found in the <central_inventory>/contentsXML directory.

 
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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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