http://docs.oracle.com/database/121/REFRN/GUID-A0612249-0A65-476D-A2B8-FA94DF5EEC7F.htm#REFRN-GUID-A0612249-0A65-476D-A2B8-FA94DF5EEC7F
EXAFUSION_ENABLEDisusedtoenableordisabletheExafusionacceleratecachefusionprotocolfeature,
These are the prerequisites before enabling Exafusion:
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Oracle Storage Server Software release 12.1.2.1.1 or later is required.
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Mellanox ConnectX-2 and ConnectX-3 Host Channel Adapters (HCAs) are required.
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Oracle Unbreakable Enterprise Kernel 2 Quarterly Update 5 (UEK2QU5) kernels (2.6.39-400.2nn) or later are required.
The Exafusion feature does not support mixed mode operation on an Oracle RAC cluster. Either all the instances in an Oracle RAC cluster must have the feature enabled or none. Rolling upgrades of a non-Exafusion enabled Oracle RAC cluster to Exafusion are not supported.
Note:
Exafusion is available only on the Linux operating system of Oracle Exadata Database Machine. It is not supported on any non-engineered system or SPARC SuperCluster (SSC). If you set theEXAFUSION_ENABLED
parameter on a non-supported platform,then the instance will be prevented from starting up,and anORA-00439:The specified feature is not enabled:stringerror message is generated.
This initialization parameter is available starting with Oracle Database 12c Release 1 (12.1.0.2) Bundle Patch 11 (BP11).
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