When upgrading theOracle Database software versionon aBaseDB VM, a newOracle Homeis created to house the upgraded software. Once the database is moved to this new home, the process isnot easily reversible.
Rolling back would requiredowngrading, which is a complex and risky process.
The new Oracle Home ensures that the upgraded database environment isisolated from the previous version, preventing compatibility conflicts.
Why the other options are incorrect:
A:Grid Infrastructure upgrades can be managed independently of the database upgrade.
B:Scaling VMs is a reversible operation.
D:OS patches do not impact the Oracle Home directly.
E:ASM configuration changes are reversible.
[References:Oracle Database Upgrade Guide, , ]
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