Database - RAC/Scalability (MOSC)

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Migration RHEL7 to RHEL8 with new 19c method

in Database - RAC/Scalability (MOSC) 3 commentsAnswered

Hello,

We want to reinstall operating system from RHEL7 to RHEL8 for a RAC 19c 2 nodes .

The OS will be completely reinstalled , not upgraded.

We have a filesystem dedicated to Oracle products. It will therefore be recovered.

Is it possible to use the new 19c method indicated in the document id 1559762.1 that use the script :  ./rootcrs.sh -updateosfiles  for a complete OS reinstall ?

In 19.x there is a new supported method to upgrade the OS

Upgrading Operating System for an Oracle Grid Infrastructure Server

 If so, what files should be backed up before the operation?

Probably these files :

/etc/oratab, /etc/oraInst.loc or /var/opt/oracle/oratab, /var/opt/oracle/oraInst.loc (depends on the platform) and Oracle inventory (oraInventory/*) defined in above oraInst.loc file. Be sure to also backup /etc/ocr.loc and /etc/oracle/olr.loc.

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