Despite all the updates to the Oracle RAC installer, it is still an extremely brittle install process that frequently goes pear shaped.

A common problem is pilot-error, and a regular mistake is running the root.sh script on secondary nodes before it has fully completed on the primary node.

Oracle now provides the rootcrs.pl script in the Grid home crs/install directory.

To execute the script, connect to your first node and execute as follows:

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