"Extended" or "Stretched" Oracle RAC has been available as a concept for a while. Oracle RAC 12c Release 2 introduces an Oracle Extended Cluster configuration, in which the cluster understands the concept of sites and extended setups. This knowledge is used to more efficiently manage "Extended Oracle RAC", whether the nodes are 0.1 mile or 10 miles apart.
The presentation was last updated on August 7th 2017 to add a reference to the new MAA White Paper: "Installing Oracle Extended Clusters on Exadata Database Machine" - http://www.oracle.com/technetwork/database/availability/maa-extclusters-installguide-3748227.pdf and to correct some minor details.
Understanding oracle rac internals part 1 - slidesMohamed Farouk
This document discusses Oracle RAC internals and architecture. It provides an overview of the Oracle RAC architecture including software deployment, processes, and resources. It also covers topics like VIPs, networks, listeners, and SCAN in Oracle RAC. Key aspects summarized include the typical Oracle RAC software stack, local and cluster resources, how VIPs and networks are configured, and the role and dependencies of listeners.
Oracle RAC 19c: Best Practices and Secret InternalsAnil Nair
Oracle Real Application Clusters 19c provides best practices and new features for upgrading to Oracle 19c. It discusses upgrading Oracle RAC to Linux 7 with minimal downtime using node draining and relocation techniques. Oracle 19c allows for upgrading the Grid Infrastructure management repository and patching faster using a new Oracle home. The presentation also covers new resource modeling for PDBs in Oracle 19c and improved Clusterware diagnostics.
Oracle RAC Virtualized - In VMs, in Containers, On-premises, and in the CloudMarkus Michalewicz
This presentation discusses the support guidelines for using Oracle Real Application Clusters (RAC) in virtualized environments, for which general Oracle Database support guidelines are discussed shortly first.
First presented during DOAG 2021 User Conference, this presentation replaces its predecessor from 2016: https://www.slideshare.net/MarkusMichalewicz/how-to-use-oracle-rac-in-a-cloud-a-support-question
Smart monitoring how does oracle rac manage resource, state ukoug19Anil Nair
An important requirement for HA and to provide scalability is to detect problems and resolve them quickly before the user sessions get affected. Oracle RAC along with its Family of Solutions work together cohesively to detect conditions such as "Un-responsive Instances", Network issues quickly and resolve them by either redirecting the work to other instances or redundant network paths
Oracle Databaseの既存バージョンの10gや11gOracle Zero Data Loss Recovery Applianceの登場で、ますます重要な機能となってきたOracle Recovery Managerについて、OTN人気連載シリーズ「しばちょう先生の試して納得!DBAへの道」の執筆者が語ります。RMANバックアップの運用例から、高速増分バックアップの内部動作とチューニング方法まで、出し惜しみなく解説します。
This version of "Oracle Real Application Clusters (RAC) 19c & Later – Best Practices" was first presented in Oracle Open World (OOW) London 2020 and includes content from the OOW 2019 version of the deck. The deck has been updated with the latest information regarding ORAchk as well as upgrade tips & tricks.
Oracle RAC 19c - the Basis for the Autonomous DatabaseMarkus Michalewicz
Oracle Real Application Clusters (RAC) has been Oracle's premier database availability and scalability solution for more than two decades as it provides near linear horizontal scalability without the need to change the application code. This session explains why Oracle RAC 19c is the basis for Oracle's Autonomous Database by introducing some of its latest features, some of which were specifically designed for ATP-D, as well as by taking a peek under the hood of the dedicated Autonomous Database Service (ATP-D).
Zero Data Loss Recovery Applianceによるデータベース保護のアーキテクチャオラクルエンジニア通信
データ量の増大、業務の24時間化に伴い、従来のバックアップ・ソリューションではデータ保護のニーズをすべて満たせなくなってきています。これを解消すべくOracle Databaseの保護に特化して設計されたエンジニアド・システム、Zero Data Loss Recovery Applianceが登場しました。これからの時代のデータ保護テクノロジーに関して、アーキテクチャを中心に紹介します。
Understanding oracle rac internals part 2 - slidesMohamed Farouk
This document discusses Oracle Real Application Clusters (RAC) internals, specifically focusing on client connectivity and node membership. It provides details on how clients connect to a RAC database, including connect time load balancing, connect time and runtime connection failover. It also describes the key processes that manage node membership in Oracle Clusterware, including CSSD and how it uses network heartbeats and voting disks to monitor nodes and remove failed nodes from the cluster.
Understanding oracle rac internals part 1 - slidesMohamed Farouk
This document discusses Oracle RAC internals and architecture. It provides an overview of the Oracle RAC architecture including software deployment, processes, and resources. It also covers topics like VIPs, networks, listeners, and SCAN in Oracle RAC. Key aspects summarized include the typical Oracle RAC software stack, local and cluster resources, how VIPs and networks are configured, and the role and dependencies of listeners.
Oracle RAC 19c: Best Practices and Secret InternalsAnil Nair
Oracle Real Application Clusters 19c provides best practices and new features for upgrading to Oracle 19c. It discusses upgrading Oracle RAC to Linux 7 with minimal downtime using node draining and relocation techniques. Oracle 19c allows for upgrading the Grid Infrastructure management repository and patching faster using a new Oracle home. The presentation also covers new resource modeling for PDBs in Oracle 19c and improved Clusterware diagnostics.
Oracle RAC Virtualized - In VMs, in Containers, On-premises, and in the CloudMarkus Michalewicz
This presentation discusses the support guidelines for using Oracle Real Application Clusters (RAC) in virtualized environments, for which general Oracle Database support guidelines are discussed shortly first.
First presented during DOAG 2021 User Conference, this presentation replaces its predecessor from 2016: https://www.slideshare.net/MarkusMichalewicz/how-to-use-oracle-rac-in-a-cloud-a-support-question
Smart monitoring how does oracle rac manage resource, state ukoug19Anil Nair
An important requirement for HA and to provide scalability is to detect problems and resolve them quickly before the user sessions get affected. Oracle RAC along with its Family of Solutions work together cohesively to detect conditions such as "Un-responsive Instances", Network issues quickly and resolve them by either redirecting the work to other instances or redundant network paths
Oracle Databaseの既存バージョンの10gや11gOracle Zero Data Loss Recovery Applianceの登場で、ますます重要な機能となってきたOracle Recovery Managerについて、OTN人気連載シリーズ「しばちょう先生の試して納得!DBAへの道」の執筆者が語ります。RMANバックアップの運用例から、高速増分バックアップの内部動作とチューニング方法まで、出し惜しみなく解説します。
This version of "Oracle Real Application Clusters (RAC) 19c & Later – Best Practices" was first presented in Oracle Open World (OOW) London 2020 and includes content from the OOW 2019 version of the deck. The deck has been updated with the latest information regarding ORAchk as well as upgrade tips & tricks.
Oracle RAC 19c - the Basis for the Autonomous DatabaseMarkus Michalewicz
Oracle Real Application Clusters (RAC) has been Oracle's premier database availability and scalability solution for more than two decades as it provides near linear horizontal scalability without the need to change the application code. This session explains why Oracle RAC 19c is the basis for Oracle's Autonomous Database by introducing some of its latest features, some of which were specifically designed for ATP-D, as well as by taking a peek under the hood of the dedicated Autonomous Database Service (ATP-D).
Zero Data Loss Recovery Applianceによるデータベース保護のアーキテクチャオラクルエンジニア通信
データ量の増大、業務の24時間化に伴い、従来のバックアップ・ソリューションではデータ保護のニーズをすべて満たせなくなってきています。これを解消すべくOracle Databaseの保護に特化して設計されたエンジニアド・システム、Zero Data Loss Recovery Applianceが登場しました。これからの時代のデータ保護テクノロジーに関して、アーキテクチャを中心に紹介します。
Understanding oracle rac internals part 2 - slidesMohamed Farouk
This document discusses Oracle Real Application Clusters (RAC) internals, specifically focusing on client connectivity and node membership. It provides details on how clients connect to a RAC database, including connect time load balancing, connect time and runtime connection failover. It also describes the key processes that manage node membership in Oracle Clusterware, including CSSD and how it uses network heartbeats and voting disks to monitor nodes and remove failed nodes from the cluster.
This is presented at JRubyKaigi 2010.
JRubyKaigi 2010
http://jrubyconf.com/jrubykaigi2010/
RubyKaigi 2010
http://rubykaigi.org/2010/en
The document introduces the System Event Notification Service (SENS), which notifies e-commerce sites of events like purchases in real-time. SENS requires being real-time, ensuring order synchronization, avoiding duplication, and maintaining high performance. To achieve load distribution, the original SENS architecture separated functions asynchronously but was too slow. The new architecture uses Apache Camel for asynchronous messaging between separated API, Camel, and batch layers, improving performance but requiring further work on batch processing, error handling, and monitoring.
This talk shares lessons learned from security due diligence (security DD) project with audiences. To successfully finish it, communication with other members is essential. With enough communication, security engineer can grasp the target of Security DD, prepare meeting materials with members of acquisition company, and describe security risk to executives.
This talk is presented in OWASP Night 20th in Japan. Almost all attendees are Japanese. Therefore, the pptx slides are written in Japanese.
ROMA -- An Customizable-NoSQL Database in Ruby at NoSQL Afternoon in JapanRakuten Group, Inc.
ROMA is a user-customizable NoSQL database developed by Rakuten. It uses a plug-in architecture and domain-specific language to enable developers to easily address application-specific needs. The architecture employs consistent hashing, replication, and other techniques for scalability and high availability. Developers can define custom commands as plug-ins to perform operations like inserting elements into lists or setting map values stored in ROMA. This allows applications to access structured data in ROMA without worrying about distribution.
This presentation vividly describes what is going on in the IT industry with the advent of cloud technology, focusing in Google App Engine. Then reviews competitors’ moves both in terms of background technology and the service capitalization.
It was revealed that major Japanese companies such as Fujitsu and NTT Data are introducing Microsoft Azure in their data centers, but Oracle and IBM are the technically strong chasers. So far there are very few moves
for Japanese IT companies to implement their own cloud products.
IBM's zEnterprise product line has potential to replace and wipe out container-based data centers, but their pricing policy unknown. Oracle's next hardware strategy unknown.
In Japan, tailoring open-source softwares auch as Cassandra and Hadoop found at newly rising companies, IIJ, and Rakuten.
[db tech showcase Tokyo 2015] D33:Superdome X 上の SQL Server 2014 OLTP 検証結果と S...Insight Technology, Inc.
Windows Server 2012 R2 と SQL Server 2014 の Superdome X 上の正式サポートを前に、OLTP 検証ツールを用いて、ブレード数を、1、2、4、8 枚と順次増加させ、最大 16 NUMA Node 240 物理コア CPU 4TB メモリー上でスケールアップ性能検証を実施しました。このサイズでの検証は、米国本社でも実績がなく、検証過程で発生した問題点を、米国 Windows Server / SQL Server 開発チームにフィードバックを行うことが出来ました。このスケールアップ検証結果を発表します。現在、米国本社 SQL Server 開発チームでは、vNext (SQL Server 2016) の開発が進んでおり、この中でのインメモリー活用処理とクエリー・ストアー機能に関しての最新情報をお知らせします。
This document discusses how to make software more green and environmentally friendly. It defines green software as software that is carbon efficient, energy efficient, hardware efficient, and carbon aware. It provides recommendations for various roles within an organization on driving green initiatives, including focusing on efficiency for CxOs, architects, infrastructure engineers, and developers. Examples include optimizing resource usage, using public clouds effectively, prioritizing equipment standardization, and developing applications that can run more efficiently.
Simple and Effective Knowledge-Driven Query Expansion for QA-Based Product At...Rakuten Group, Inc.
The document proposes a knowledge-driven query expansion approach for question answering (QA)-based product attribute extraction. It trains QA models using attribute-value pairs from training data as knowledge, while mimicking imperfect knowledge at test time through techniques like knowledge dropout and token mixing. This helps induce better query representations, especially for rare and ambiguous attributes. Experiments on a cleaned product attribute dataset show the proposed approach with all techniques outperforms baseline methods in both macro and micro F1 scores.
This document summarizes Andrew Hajinikitas' work developing Rakuten's private cloud infrastructure. It describes the key components of Rakuten's infrastructure including metal instances, microservers, and GPU servers. It provides details on Rakuten's software stack and their goals to expand managed services. Currently, Rakuten operates 9 data centers in Japan and overseas providing around 30,000 servers to support their ecosystem. Their future plans include extending network self-service, making GPU resources available as a platform service, and improving efficiency through optimized hardware selection.
The document discusses the Travel & Leisure Platform Dept and its responsibilities related to data and platform management. It provides an overview of the technical stack including private/public clouds, databases, containers, and automation/monitoring tools. It then discusses recent projects involving business continuity, containerization, alert integration, and automation. Finally, it describes open roles for a DBA and DevOps position and their responsibilities related to database provisioning, backup/recovery, infrastructure as code, and providing platforms and tools for developers.
This presentation introduces the OWASP Top 10:2021.
It explains how to look at the data related to OWASP Top 10:2021, and provides detailed explanations of items with distinctive data. It also introduces the OWASP Project related to each item.
Gora API Group technology provides a microservices architecture and APIs for Rakuten's golf course reservation system, improving the user experience and increasing customer loyalty and annual golf rounds. The architecture migrates the monolithic reservation system to microservices using Kotlin, Spring Boot, and other technologies, exposing APIs for the frontend and new products while sustaining the legacy system through services, queues, continuous delivery, and operations monitoring.
22. 22
レプリケーション・ソリューション
Logical DataGuard自 前 ス ク リ プ ト
ライセンス等の追加費用 不要
G o l d e n G a t eA t t u n i t y
期間ライセンス 有 ライセンス 必要
下位Version同期 非サポート
開発工数 高
考慮可能
異Version同期 サポート
導入難易度 低
異Version同期 サポート
<選定条件> 仕様要件 ・ 追加費用 ・ 導入難易度
32. 32
データ整合性
H A S H 化
対象テーブルのカラム単位でORA_HASH関数を使ってHASH化
ORA_HASH
Column 1
Column 2
Column 3
Column 4
Column 5
TABLE A
結果管理
テーブル
全レコード分のHASH値をSUMで合計
SUM
カラム数分繰り返し
Colum 1 SUM
Colum 2 SUM
Colum 3 SUM
Colum 4 SUM
Colum 5 SUM
1レコードとして結果を格納
全テーブルで繰り返す