What is Infiniband in Exadata?
Infiniband Network of Exadata Infiniband Network is a high-performance, very low-latency network layer that is active-active in all directions at 40 Gb / sec, which enables communication between the Database Server and Storage Server like following picture. In quarter and 1/8 Exadata have only two auxiliary switches.
What operating systems are supported on Exadata?
Operating Systems. For the database servers customers have a choice of two x86 (64bit) based operating systems: Oracle Linux 5. Solaris 11.
What is the difference between Exadata and Exalogic?
An Exadata is a database machine. The exalogic on the other hand is an application machine. It runs Linux and middleware software. The machine also comes with some cloud software to enable on demand virtualization and provisioning.
Which topology should you use when connecting multiple Oracle Engineered Systems racks together?
The racks that connect to Oracle Exadata Quarter Rack must be all Oracle Exadata Half Racks or Oracle Exadata Full Racks, interconnected using a fat-tree topology.
What is Dom0 and DomU in Exadata?
An Exadata Database Server contains at least one Virtual Machine (VM), known as DomU, running on a VM hypervisor or virtual machine monitor(VMM), known as Dom0. Dom0. Oracle uses the Integrated Lights Out Manager (ILOM) which is a highly specialized tool created to manage and monitor servers.
What is IB switch in Exadata?
IB Switches are used for the storage network as well as the Oracle RAC interconnect. Exadata compute nodes and storage cells are configured with dual-port InfiniBand ports and connect to each of the two leaf switches. You can access IB Switches using command line and Web ILOM. IB Switches run Linux operating system.
What is the difference between Exadata and Oracle?
Oracle Exadata delivers greater database and application performance with less hardware—and fewer licenses. Oracle Exadata means easier upgrades, tuning, patching, monitoring, and support, so you can control your costs.
What is Oracle Exadata appliance?
Oracle Exadata is a database machine designed by Oracle that provides users with optimized functionality pertaining to enterprise class databases and their associated workloads. Exadata is a composite database server machine that uses Oracle Database, Oracle Exadata Storage Server, on Oracle hardware server equipment.
What is Dom0 and DomU?
Dom0 is an abbreviation for domain zero, the management or control domain with privileged access to the hardware and device drivers. DomU is an unprivileged domain with no direct access to the hardware or device drivers.
What is the difference between Dom0 and DomU?
The Dom0 VMs have the higher privileges and they can access the hardware whereas DomU VMs have lower privileges and cannot directly access the hardware as shown in Fig. 4 [5].
