27
Mar

Oracle Exadata Database Machine – Write-Back Flash Cache

My second article in English published on OTN. 


Oracle Exadata Database Machine – Write-Back Flash Cache

http://www.oracle.com/technetwork/articles/database/exadata-write-back-flash-2179184.html


by Deiby Gómez (Oracle ACE, Guatemala) and YV Ravikumar (OCM, India)

Thank you very much to my co-author YV RaviKumar Ocm

I'm very proud of be a member of Oraworld-team

Oracle Exadata Database Machine – Write-Back Flash Cache 

Use the Write-Back Flash Cache feature to leverage the Exadata Flash hardware and make Exadata Database Machine a faster system for Oracle Database Deployments. 

Since its availability in 2008, Oracle Exadata has evolved from a data warehousing machine to a powerful solution for consolidation. With the addition of many features from version to version, the machine has become efficient in handling Data warehousing and OLTP workloads together. Achieving Extreme performance is always the goal for Exadata and its new features like Smart Scan, Smart Flash Cache, and Smart Flash Logging have made it possible. The latest feature, Write back flash cache, is another addition to the key enablers of Exadata’s Extreme Performance which again the combination of Hardware (Flash Drives) and Software (Exadata Storage Server Software) engineered together.

Complete article here:

http://www.oracle.com/technetwork/articles/database/exadata-write-back-flash-2179184.html

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26
Mar

An Insight into Oracle Flex ASM and Its Benefits

An Insight into Oracle Flex ASM and Its Benefits



Introduction

 

Oracle Real Application Cluster (RAC) is a well-known product among Oracle’s solutions to maintain high availability of your business data. Oracle RAC allows the work load to be shared among all the cluster nodes, with N-1 tolerance configuration in case of node failures, where N is the total number of nodes. Oracle RAC is constantly improving on every version and this time was not different. The new 12.1.0.1 version incorporates two properties called “Flex ASM” and “Flex Cluster” that gives support to the demand requirements on Cloud Computing oriented environments.

Oracle RAC 12c introduces two new concepts:

Hub Nodes: They are connected among them via private network and have direct access to the shared storage just like previous versions. These nodes are the ones that access the Oracle Cluster Registry (OCR) and Voiting Disk (VD) directly.

Leaf Nodes: These nodes are lighter and are not connected among them, neither access the shared storage like the Hub Nodes. Each Leaf Node communicates with the Hub Node that is attached to, and its connected to the cluster via the Hub Node that is linked to.

complete article here:

http://www.oracle.com/technetwork/articles/database/flexasm-flexcluster-benefits-odb12c-2177371.html

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14
Mar

Oracle Exadata Database Machine: Seguridad a nivel de ASM y de Base de Datos (Portuguese)

Portuguese version:

Deiby Gómez (Oracle ACE) from Guatemala and Yenugula Venkata Ravikumar (Oracle Certified Master) from India have written an article (3 parts) in Spanish about Oracle Exadata Database Machine, also these articles will be published in Portuguese and English. Guatemala and India are working together to improve knowledge in Latin America.

Oracle Exadata Database Machine: Segurança a nível de ASM e de Banco de Dados (Parte 3)

Oracle Exadata Database Machine: Segurança a nível de ASM e de Banco de Dados (Parte 2)

Oracle Exadata Database Machine: Segurança a nível de ASM e de Banco de Dados (Parte 1)

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14
Mar

Oracle Exadata Database Machine: Seguridad a nivel de ASM y de Base de Datos (Spanish)

Deiby Gómez (Oracle ACE) from Guatemala and Yenugula Venkata Ravikumar (Oracle Certified Master) from India have written an article (3 parts) in Spanish about Oracle Exadata Database Machine, also these articles will be published in Portuguese and English. Guatemala and India are working together to improve knowledge in Latin America.

Oracle Exadata Database Machine: Seguridad a nivel de ASM y de Base de Datos (Parte 1)
http://www.oracle.com/technetwork/es/articles/database-performance/seguridad-asm-base-de-datos-parte1-2166616-esa.html
Oracle Exadata Database Machine: Seguridad a nivel de ASM y de Base de Datos (Parte 2)
http://www.oracle.com/technetwork/es/articles/database-performance/seguridad-asm-base-datos-parte2-2167445-esa.html
Oracle Exadata Database Machine: Seguridad a nivel de ASM y de Base de Datos (Parte 3)
http://www.oracle.com/technetwork/es/articles/database-performance/seguridad-asm-base-datos-parte3-2167449-esa.html

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10
Mar

Oracle Exadata Database Machine: “Write-Back Flash Cache”

Guatemala, India and Brazil are working together to improve the knowledge in Latin America:


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We are very proud of to share to you all our third article in Portuguese about Oracle Exadata Database Machine. The name of our article is "Oracle Exadata Database Machine: Write-Back Flash Cache".
http://www.oracle.com/technetwork/pt/articles/database-performance/exadata-write-back-flash-cache-2164875-ptb.html

Oracle Exadata Database Machine: "Write-Back Flash Cache"

Deiby Gómez Robles , Yenugula Venkata RaviKumar (OCM) e David Siqueira  


Postado en março 2014

Desde o surgimento do "Oracle Exadata", em 2008, em sua primeira versão otimizada para "Data Warehousing", gradativamente foram adicionados novos recursos para aumentar sua capacidade de trabalho para banco de dados "data warehousing" (volumes elevados de consultas e dados) e OLTP (Volume de leituras e Escritas elevados) ou até   mesmo para o multipropósito.

Obter um ótimo desempenho sempre foi o principal objetivo da solução "Oracle Exadata", e isso se tornou possivel com os novos recusos que foram incorporados ao longo dos anos, tais como, "Smart Scan", "Smart Flash Cache","Smart Flash Log","Storage Indexes", entre outros. Um dos ultimos recursos adicionados para assegurar melhor performance do "Oracle Exadata" foi o "Flash Cache Write-Back", que veio para combinar o uso de hardware ( Flash Drives) e Software ( Exadata Storage Server Software).

Para ver el artículo completo ir al siguiente link:

http://www.oracle.com/technetwork/pt/articles/database-performance/exadata-write-back-flash-cache-2164875-ptb.html

 

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