Oracle Exadata

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Oracle Exadata
Original author(s)Oracle Corporation
Initial releaseOctober 2008
Operating systemOracle Linux
PlatformExadata Database Machine

The Oracle Exadata Database Machine (Exadata[1]) is a computing platform optimized for running Oracle Databases.

Exadata is a combined hardware and software platform that includes scale-out x86-64 compute and storage servers, RoCE or InfiniBand networking, RDMA-addressable memory acceleration, NVMe flash, and specialized software.[2]

Exadata was introduced in 2008 for on-premises deployment, and, since October 2015, via the Oracle Cloud as a subscription service, known as the Exadata Database Service.[3] Exadata Cloud@Customer is an on-premises implementation of Exadata Database Service, available since 2017. Oracle databases deployed in the Exadata Database Service or Exadata Cloud@Customer are 100% compatible with databases deployed on Exadata on-premises, enabling customers to transition to the Oracle Cloud with no application changes. Oracle Corporation manages this service, including hardware, network, Linux software and Exadata software, while customers have complete ownership of their databases.

Use cases[edit]

Exadata is designed to run Oracle Database workloads, such as an OLTP application running simultaneously with Analytics processing. Historically, specialized database computing platforms were designed for a particular workload, such as Data Warehousing, and poor or unusable for other workloads, such as OLTP. Exadata allows mixed workloads to share system resources fairly with resource management features allowing prioritized allocation, such as always favoring workloads servicing interactive users over reporting and batch, even if they are accessing the same data. Long running requests, characterized by Data Warehouses, reports, batch jobs and Analytics, are reputed to run many times faster compared to a conventional, non-Exadata database server.[2][4][5]

Release History[edit]

Exadata Release Primary Software Enhancements Primary Hardware Enhancements
X9M - Sept, 2021 Secure RDMA fabric isolation PCIe 4.0 dual-port active-active 100Gb RoCE network
Smart Flash Log write-back 33% increase in compute cores
Storage Index and Columnar Cache persistence 33% increase in memory capacity
Faster decryption and decompression Algorithms 28% increase in disk capacity
Smart Scan performance optimizations 1.8x greater internal fabric bandwidth (PCIe 4.0)
1.8x greater flash bandwidth (PCIe 4.0)
X8M - Sept, 2019 RoCE: RDMA over Converged Ethernet Persistent Memory (PMEM) in storage
Persistent Memory Data Accelerator 100 Gbit/s internal fabric (2.5x increase)
Persistent Memory Commit Accelerator
KVM virtual machine support
X8 - April, 2019 AIDE: Advanced Intrusion Detection Environment Storage Server Extended (XT)
ML-based monitoring and auto-indexing 40% increase in disk capacity
Real-time updates of optimizer statistics 60% increase in storage processor cores
X7 - Oct, 2017 In-memory database in flash storage 2x increase in flash capacity
DRAM cache in storage 25% increase in disk capacity
Large-scale storage software updates 25 Gbit/s data center Ethernet support
Exadata Cloud@Customer Exadata Cloud Service on-premises
X6 - April, 2016 Exafusion direct-to-wire OLTP protocol 2x increase in flash capacity
Smart Fusion Block Transfer 10% increase in compute cores
Smart Flash Log 2x increase in memory capacity
Exadata Cloud Service Exadata on Oracle Cloud Infrastructure (OCI)
X5 - Dec, 2014 In-memory database fault tolerance 2x increase in flash & disk capacity
Database snapshots Elastic configurations
Xen virtual machine support All-flash storage server option
NVMe flash protocol support 50% increase in compute cores
IPv6 support 50% increase in memory capacity
X4 - Nov, 2013 Network Resource Management 2x increase in flash capacity
I/O latency capping 2x increase in memory capacity
Capacity-on-Demand licensing 50% increase in compute cores
Active/Active InfiniBand (2x increase) 33% increase in disk capacity
X3 - Sept, 2013 Smart Flash Cache write-back Eighth-Rack configuration
Improved management of slow disks/flash 4x increase in flash capacity
Sub-second brownout after storage failure 33% increase in compute cores
Simplified disk replacement 75% increase in memory capacity
Bypass predictive disk failure 2x increase in data center bandwidth
X2 - Sept, 2010 Smart Flash Log 8-socket (X2-8) configuration
Auto Service Request Storage Expansion Rack
Secure Erase of storage Hardware-based decryption
Platinum Services 50% increase in compute cores
2x increase in memory capacity
50% increase in disk capacity
8x increase in data center bandwidth
v2 - Sept, 2009 Storage Indexes Flash storage
Database-aware Smart Flash Cache Quarter-Rack configuration
Hybrid Columnar Compression 2x increase in memory & disk capacity
3x increase in data center bandwidth
40 Gbit/s internal fabric (2x increase)
v1 - Sept, 2008 Oracle Enterprise Linux Scale-out 4-socket compute servers
Smart Scan (storage offload) Scale-out 4-socket storage servers
IORM (I/O Resource Manager) 20 Gbit/s internal fabric (InfiniBand)
Join filtering (Bloom filters) 1 Terabyte disks
Incremental backup filtering 1 Gbit/s data center network (Ethernet)
Smart file creation


As the platform has been around since 2008, Oracle has published information related to the end-of-support for older Exadata generations. In Oracle's published document titled Oracle Hardware and Systems Support Policies,[6] they mention "After five years from last ship date, replacement parts may not be available and/or the response times for sending replacement parts may be delayed." To look up the "last ship date" of a particular Oracle Exadata generation, Oracle published a document titled Oracle Exadata - A guide for decision makers.[7]


  1. ^ Various (September 2019). "Oracle Exadata Database Machine X8M-2" (PDF). Retrieved September 19, 2019.
  2. ^ a b Pedregal-Martin, Cristobal. "Exadata: Why and What".{{cite web}}: CS1 maint: url-status (link)
  3. ^ Spendolini, Brian (2019). Oracle Database Exadata Cloud Service: A Beginner's Guide. Oracle Press. ISBN 978-1260120875.
  4. ^ "Exadata Customer Success Stories". Retrieved July 16, 2018.
  5. ^ Various. "Gartner Peer Insights: Oracle Exadata Database Machine". Retrieved August 8, 2018.
  6. ^ "Oracle Hardware and Systems Support Policies" (PDF). Retrieved March 5, 2021.
  7. ^ "Oracle Exadata - A guide for decision makers" (PDF). Retrieved December 1, 2020.

External links[edit]