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RAC databases migration from RHEL6 to RHEL7 nodes [message #680605] Mon, 25 May 2020 02:20 Go to next message
ASRooba
Messages: 2
Registered: May 2020
Junior Member
We have a three node cluster in our test environment. The VMs are RHEL6 and we would need to migrate all these databases to new RHEL7 nodes. Can you guide us on what are the best approaches to achieve this with minimal downtime or risk? In existing cluster: GRID home: 18c & Databases in 12cR2 &12cR1
Re: RAC databases migration from RHEL6 to RHEL7 nodes [message #680607 is a reply to message #680605] Mon, 25 May 2020 06:06 Go to previous messageGo to next message
John Watson
Messages: 8428
Registered: January 2010
Location: Global Village
Senior Member
Welcome to the forum. Please read the OraFAQ Forum Guide and How to use code tags and make your code easier to read

Add your new RHEL7 nodes to the cluster, relocate your services, remove the old RHEL6 nodes. It's minimal risk procedure, no need for any downtime. If licences are a problem, you'll have to do it one node at a time: remove an RHEL6 node, add an RHEL7 node, and so on.
Re: RAC databases migration from RHEL6 to RHEL7 nodes [message #680613 is a reply to message #680607] Mon, 25 May 2020 23:34 Go to previous messageGo to next message
ASRooba
Messages: 2
Registered: May 2020
Junior Member
Thanks John for the quick reply. Do we have any implementation plan document for the similar scenario? If yes, Where should I look for that.
Re: RAC databases migration from RHEL6 to RHEL7 nodes [message #680614 is a reply to message #680613] Tue, 26 May 2020 01:03 Go to previous message
John Watson
Messages: 8428
Registered: January 2010
Location: Global Village
Senior Member
It is all in the docs, the Clusterware Admin And Deployment Guide.
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