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Relocating Central Inventory from Shared Location to Private (Local) Location for RAC users (Doc ID 604513.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.1 to 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


In a Real Applications Cluster, customers have the option of installing the CRS and RDBMS homes either locally on each node, or as one central shared home.  Regardless of whether you choose a shared or non-shared Oracle Home, however, each node must still have its own private Oracle software Central Inventory.

The Oracle Central Inventory is a small repository that holds information about the Oracle software that is installed on that node only; it must not be placed on a clustered/shared filesystem to be shared by other nodes in an Oracle RAC environment.   This is documented in the 10.2 install documentation in the OUI guide, in Chapter 6, "Cluster Environment Installation" :

If the Oracle base directory is on a cluster file system, or on an NFS file system on a NAS device, then you must specify a path for the Oracle Inventory directory on a local file system. The Oracle base directory must be on a local file system to enable all of the nodes to have separate inventories.

However, versions of OUI prior to did not display a warning if the DBA chose a shared location for the Oracle Central Inventory, and so some customers who did a cluster installation prior to 11.1 may have a Central Inventory in a shared location.

OUI and above DOES provide a warning, so customers who installed an earlier version and created a shared inventory will get a warning like this one when trying to apply the patchset:

This note provides steps to convert a shared Central Inventory into a local inventory on each node.


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