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Exadata COD

Capacity-on-Demand Licensing (CoD) - CoD allows the customer to license the Oracle software incrementally instead of licensing the entire Exadata configuration. DBMS licenses can now match the enabled Exadata hardware, and can be purchased later as needed for growth instead of a large upfront expenditure. In terms of minimums for CoD licensing, a minimum of 40% of the cores in a server must be licensed (14 cores per server, or eight cores per 1/8th rack).

CoD就是用户可以根据需求动态去购买需要的资源,适用于X4-2, X4-8及以后的系统,X4-2 1/8配不支持,但是X5-2和X6-2 1/8配支持。在X5-2里,每台计算节点至少需要激活14core,每台存储节点至少需要激活8core。在X5-2时,1/8和1/4的硬件资源配置是一样的,只是激活的核心和磁盘容量不同,从X6-2开始,1/8和1/4的硬件是不同的,表现在存储节点磁盘数量和闪存盘的数量减半。



All-Flash Exadata Storage Server

Flexible 'Elastic' Configuration Options

Capacity-on-Demand Licensing (CoD)

Support for Virtualization with Oracle Virtual Machine (OVM)

Exafusion Direct to Wire OLTP Protocol

Faster InfiniBand software drivers which allows the database to bypass OS network stack and make calls directly to the InfiniBand hardware.  Exafusion is supported back to the X3-2 and requires the GI/DB release as well.

Dual-Format Columnar Flash Cache

During scans of Hybrid Columnar Compressed (HCC) data, the HCC data is automatically transformed into pure columnar format as it is loaded into flashcache.  It’s automatic and transparent performance boost, and also requires GI/DB
Exadata-specific AWR Enhancements

AWR reports now include Compute and Storage Configurations, Health, and I/O Analysis metrics specific to the Exadata platform.
Exadata OVM Enhancements

High speed InfiniBand SR-IOV supports full Exadata features with performance similar to non-virtualized (supports both 11gR2 and 12c GI/DB versions).
New Database Node Monitoring and Alerts

New DBMCLI utility for monitoring and managing the DB Compute Nodes (very similar to CELLCLI and services for Storage Servers).  The new service (dbserverd) replaces and introduces a Management Server (msStatus) and a Restart Server (rsStatus) as well as new user accounts (dbadmin, dbmmonitor).
Linux 6 Support

On both DB Compute and Storage Servers (except for dom0 in OVM config).  This also has impacts on default files systems (now ext4 for new installs), startups of OHA and TFA, and other Linux commands/utilities.




useful mos note for exadata
Oracle性能加速之Write-Back Flash Cache
Exadata and ASM
Oracle ZDLRA (Zero Data Lost Recovery Appliance) FAQ
Oracle ZDLRA (Zero Data Lost Recovery Appliance) Features
Oracle Database 18c On Exadata
Migrate Oracle Database on AIX to Exadata
ExaWatcher Charts
qperf & iperf