By Murali Vallath
Grid structure is Oracle’s process for high-end computing and RAC is the stepping stone into this area. This e-book specializes in present know-how together with all legitimate RAC beneficial properties up via Oracle Database 10g unencumber 2, with a chief concentrate on deploying it in a high-end grid surroundings. The e-book discusses this expertise at size which clients will locate useful whilst studying, enforcing or tracking a RAC setting. the writer covers workshop implementation of companies and the distribution of workload throughout situations, with threshold definitions and the hot load balancing algorithms. furthermore it contains special discussions on ASM that enhances the implementation of RAC in Oracle Grid procedure. The booklet additionally comprises discussions on new Oracle Clusterware, its elements and its integration with RAC.
Oracle 10g RAC makes a speciality of RAC-specific issues together with ASM, working procedure configuration, install and configuration of RAC and masses extra. assurance comprises community configuration for prime availability, FAN, TAF, ONS, implementation of utmost availability structure (MAA), EM Grid keep watch over, AWR, ADDM and different performance-related instruments. the writer comprises a number of scripts for functionality tuning and implementation that the reader can use to configure a RAC atmosphere both on a 2, four, eight, 60 or ninety nine node configuration.
- Focuses on enforcing, trying out and tuning gains of actual program Clusters (RAC) database model 10g liberate 2
- Provides large insurance of utilization, day by day features and operations
- Includes counsel and methods resembling script samples to demonstrate numerous gains of RAC
- A jumpstart into all of the key beneficial properties of 10g R2 RAC
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Additional info for Oracle 10g RAC Grid, Services & Clustering
Example text
InfiniBand architecture has the following communication characteristics: User-level access to message passing Remote Direct Memory Access (RDMA) in read/write mode Up to a maximum of 2-Gb message in a single transfer The memory protection mechanism defined by the InfiniBand architecture allows an InfiniBand HCA to transfer data directly into or out of an application buffer. To protect these buffers from unauthorized access, a process called memory registration is employed. Memory registration allows data transfers to be initiated directly from user mode, eliminating costly context switches to the kernel.
Org) to provide easy transparent, handshaking between heterogeneous environments, this grid architecture may not be possible. 6 Oracle grid Globus Toolkit In the arena of grid standards, the Globus Toolkit is of primary importance. This toolkit is an open-source enabling technology for the grid, letting computer users share computing power, databases, and other tools securely online across corporate, institutional, and geographic boundaries without sacrificing local autonomy. The toolkit includes software for security, information infrastructure, resource management, data management, communication, fault detection, and portability.
In this case, each instance will have all the background process used in a stand-alone configuration, plus the additional background processes required specifically for RAC. Each instance has its own SGA, as well as several background processes, and runs on a separate node having its own CPU and physical memory. Keeping the configurations in all the nodes identical is beneficial for easy maintenance. Best Practice: RAC does not require all nodes to be of identical configuration. However, to help with easy maintenance and load balancing, it is advisable to have all nodes be of identical configuration.