6.2 Migrating a Bare Metal Oracle RAC Cluster to an Oracle RAC Cluster in Oracle Linux KVM
You can move an existing Oracle Real Application Clusters (Oracle RAC) cluster into a virtual environment that is managed by KVM.
Note:
This topic applies only to two-socket x86 servers. It does not apply to eight-socket servers such as Oracle Exadata X8M-8.The migration of a bare metal Oracle RAC cluster to an Oracle RAC cluster in Oracle Linux KVM can be achieved in the following ways:
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Migrate to Oracle RAC cluster in Oracle Linux KVM using the existing bare metal Oracle RAC cluster with zero downtime.
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Migrate to Oracle RAC cluster in Oracle Linux KVM by creating a new Oracle RAC cluster in Oracle Linux KVM with minimal downtime.
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Migrate to Oracle RAC cluster in Oracle Linux KVM using Oracle Data Guard with minimal downtime.
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Migrate to Oracle RAC cluster in Oracle Linux KVM using Oracle Recovery Manager (RMAN) backup and restore with complete downtime.
The conversion of a bare metal Oracle RAC cluster to an Oracle RAC cluster in Oracle Linux KVM has the following implications:
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Each of the database servers will be converted to an Oracle Linux KVM server on which a KVM host is created along with one or more guests, depending on the number of Oracle RAC clusters being deployed. Each guest on a database server will belong to a particular Oracle RAC cluster.
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As part of the conversion procedure, the bare metal Oracle RAC cluster will be converted to one Oracle RAC cluster in Oracle Linux KVM to start with. There will be one guest per database server.
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At the end of the conversion, the cell disk and grid disk configuration of the storage cells are the same as they were at the beginning of the conversion.
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The KVM host uses a small portion of the system resources on each database server. Typically, the KVM host uses 24 GB plus 6% of the server RAM, and 4 virtual CPUs. Take these resource requirements into consideration when sizing the SGA for databases running in conjunction with Oracle Linux KVM.
- Refer to My Oracle Support note 2099488.1 for the complete instructions.