Apps DBA Workshop

We are trying to install and configure two node Oracle Grid infrastructure 12.1.0.2 for one of our customer, but there was an issue with on of the cluster node and installation cannot proceed further. All pre-reqs checks were successful, we tested ssh it was working fine. Even nodes communication was working without any issues from both the nodes. Error Screen Shot: Its a very generic error that points to invalid hostname, but honestly hostname was defined correctly. After lot of troubleshooting we found solution, there was problem with "hostname -i", when we see the hostname IP address it was pointing to IP Address + MAC address which is not correct. After fixing this issue installation completed with any issues. Hope it helps, thanks for reading.  regards, Zaheer

 There was a failed installation of  Oracle 12c grid infrastructure due to some storage issues, later these nodes were cleaned using the deinstall procedure. Once the nodes are cleaned, proceeded back with the installation and encountered the following error: To solve this issue check "/etc/oracle" directory on nodes for which its failing. When we check both nodes, we found this directory existed on node2 and not deleted by deinstall procedure. Action Plan: - Delete "/etc/oracle" directory - Retry the Installation  and it should proceed without issues. thanks for reading :) regards, Zaheer

This is a step by step article for adding a new node to an existing 2  node 12c Grid Infrastructure cluster. I've demonstrated this post on virtual box. This post will be helpful for those who wants to practice adding of nodes for TESTING/DEMONSTRATION purpose and it will be also helpful for those who wants to add a node in a real production environment. Please read my previous article  to have a clear understanding of this deployment. " Oracle 12c RAC Installation on linux using virtualbox " High level steps for adding a node to 12c Grid Infrastructure: 1) Install OS same as other surviving cluster nodes 2) Configure shared Storage 3) Configure network (public, private and virtual) 4) Configure all OS pre-requisites (users, groups, directories, kernel parameters etc) 5) Run cluvfy to verify addition of node 6) Add node to an existing 12c cluster 7) Verify Services on all cluster nodes 8) Add Instance to a third node Existing network configuration of 2 No...