What are the features of Exadata?
When you think about implementing Oracle Exadata, it is crucial to understand five key features that empowers this engineered system:
- Smart Flash Cache.
- Storage Indexes.
- Smart Scans and Cell Offloading.
- Hybrid Columnar Compression.
- IORM.
What is the use of Oracle Exadata?
Oracle Exadata allows customers to run Oracle Database with the same high performance, scale, and availability wherever needed. Workloads easily move between on-premises data centers, Cloud@Customer deployments, and Oracle Cloud Infrastructure, enabling customers to modernize operations and reduce costs.
What is smart scan in Exadata?
The Smart Scan feature in Exadata enables SQL processing to happen at the storage tier, instead of the database tier, to improve query performance. Smart Scan reduces the volume of data sent to the database tier thereby reducing the CPU usage on database nodes.
What is the latest version of Oracle Exadata?
Exadata 21.2. 3.0. 0 release and patch (33227033) (Doc ID 2791716.1) Exadata Database Machine and Exadata Storage Server Supported Versions (Doc ID 888828.1)
What is flash cache in Exadata?
The Exadata Smart Flash Cache is a cache for storing redo data until this data is safely written to disk. The Exadata Storage Server comes with a substantial amount of flash storage. A small amount is allocated for database logging and the remainder will be used for caching user data.
What is Oracle Exadata system software?
Oracle Database and Oracle Exadata System Software allow the user to provide directives at the database table, index and segment level to ensure that specific data is retained in flash.
Can I upgrade Oracle Exadata Database Machine to custom configurations?
Now you can upgrade Oracle Exadata Database Machine to custom configurations called “elastic configurations”. Elastic configurations enable you to build an Oracle Exadata Rack containing a custom number of database servers and storage servers that meet your needs. See Elastic Configurations for details.
What is Oracle Exadata deployment assistant (Oeda)?
Oracle Exadata Deployment Assistant (OEDA) is used to specify the physical network interfaces that you want to bond for the client network and the additional networks, if configured. OEDA generates bonded network interfaces that amalgamate two physical network interfaces.
What is Hybrid Columnar Compression in Oracle Exadata?
Oracle Exadata Storage Server provides a very advanced compression capability called Hybrid Columnar Compression. Hybrid Columnar Compression enables the highest levels of data compression and provides tremendous cost savings and performance improvements due to reduced I/O.
4 New Features for Oracle Exadata System Software Release 20. x
- Exadata Secure RDMA Fabric Isolation.
- Smart Flash Log Write-Back.
- Fast In-Memory Columnar Cache Creation.
- Cell-to-Cell Rebalance Preserves PMEM Cache Population.
- Control Persistent Memory Usage for Specific Databases.
What is the latest version of Exadata?
Exadata System Software Update 21.2. 0 Update is now generally available. 21.2. 3.0. 0 is a maintenance release that adds critical bug fixes and security fixes on top of 21.2.
What is Exadata used for?
Oracle Exadata allows enterprises to run any Oracle Database workload with the highest performance, scale, availability, and security on fully compatible cloud and on-premises infrastructure.
What is Exadata storage cell?
Exadata storage provides an advanced compression technology, Hybrid Columnar Compression (HCC), that typically provides 10x, and higher, levels of data compression and boosts the effective data transfer by an order of magnitude. The Oracle Exadata Database Machine is the world’s most secure database machine.
What is Exadata cell node?
Database Nodes – The Exadata Database Machine runs Oracle Database 11g Real Application Cluster. The cluster and the database run on the servers known as database nodes or compute nodes (or simply “nodes”). A full rack has 8 nodes running Oracle Linux or Oracle Solaris.
Why Oracle Cloud is the best?
Oracle Cloud Infrastructure provides the best price/performance available in the market to date. Workloads deployed on Oracle Cloud Infrastructure often require fewer compute servers and block-storage volumes— lowering the cost of delivering optimized workload performance.
What is the difference between Exadata and Oracle?
Differences: Oracle Database Appliance is not Exadata. Exadata is a pre-configured combination of hardware and software that provides an infrastructure solely for running Oracle Database. Oracle Database Appliance (ODA) is an integrated highly available (HA) database and applications system in a single box.