Oracle RAC is a cluster database technology that allows multiple computers to share the same database. Its characteristics are: 1. High availability, through multi-node deployment, even if a node fails, other nodes can still continue to provide services, ensuring continuous availability of the database; 2. Scalability, by increasing or reducing the number of nodes. Increase or reduce the processing power of the system; 3. Scalability. By adding more nodes, the capacity and processing power of the database can be expanded to support more users and larger-scale data processing, etc.
The operating environment of this tutorial: Windows 10 system, Oracle version 19c, DELL G3 computer.
Oracle RAC(Real Application Clusters) is a cluster database technology that allows multiple computers to share the same database, thereby providing high availability, scalability, and extensibility. RAC is a component of the Oracle database that runs on multiple nodes and communicates with each other through a high-speed Internet network to complete tasks collaboratively. Each node has its own computing resources and memory, but they share the same storage space.
Oracle One of the main features of RAC is its high availability. Through multi-node deployment, even if a node fails, other nodes can still continue to provide services, ensuring continuous availability of the database. When a node fails, RAC will automatically redistribute tasks and resources to ensure the smooth operation of the system and reduce the impact on users.
Scalability is another important feature. Oracle RAC can increase or decrease the processing power of the system by increasing or decreasing the number of nodes. As users or data volume increases, more nodes can be dynamically added to share the load, maintaining system performance and responsiveness. In addition, RAC also supports dynamic adjustment of resource allocation, which can intelligently allocate computing resources according to needs and improve system utilization.
Scalability is another advantage of Oracle RAC. By adding more nodes, the capacity and processing power of the database can be expanded to support more users and larger-scale data processing. This makes Oracle RAC has become an ideal choice for handling high load and large-scale business, especially in scenarios that need to handle a large number of concurrent transactions, such as e-commerce websites, financial transaction systems, etc.
Oracle RAC also provides fault recovery and data protection functions. Through multi-node deployment and data replication technology, data backup and recovery can be achieved. When a node fails, the backup node can take over the task, ensuring system continuity and data integrity. In addition, Oracle RAC also supports real-time flashback technology, which can quickly restore the database to a specific point in time to meet business needs and compliance requirements.
In short, Oracle RAC is a powerful cluster database technology that provides high availability, scalability and extensibility. Through multi-node deployment, it can ensure the continuous availability of the database and provide flexible resource management and failure recovery mechanisms. For organizations that need to handle high loads and large-scale operations, Oracle RAC is an ideal choice that can help them improve business performance and data processing capabilities, and ensure data security and integrity.
The above is the detailed content of what is oracle rac. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Inflation is a phenomenon of general price increases, including demand-driven, cost-driven and currency super-engineering; its impacts include shrinking deposits, unable to catch up with prices, and loans becoming "favorable"; response methods include appropriate investment, increasing income sources, controlling consumption rhythms and paying attention to policy trends.

The key to writing a good resume is to clarify the goals, concise structure, and focus the content. First, the resume should be tailored for specific positions, adjust the content according to the position requirements, highlighting the matching skills and experience; second, the structure should be clear, including contact information, personal profile, experience and other modules, and distinguish them with titles and boldness to avoid large paragraphs of text; third, the experience description should be spoken with facts and data, and the verbs should be started with digital quantization and achievement-oriented methods to show actual value; finally, pay attention to the details of the layout, unify the font and spacing, use PDF format, and standardize the name of the file to improve professionalism. Repeated modifications or asking others to check will help improve the quality of your resume.

Screenshot methods vary depending on the device. Common operations are as follows: 1. Windows: PrtScn full screen, Alt PrtScn screenshots the current window, Win Shift S free selection screenshots, Win PrtScn automatically saves; 2. Mac: Shift Cmd 3 full screen screenshots, Shift Cmd 4 selection or click window screenshots; 3. iPhone: Press the power home button model with Home button, and press the power volume plus key for the full screen model with Power Volume; 4. Android: Generally, the power volume down key, and some brands support gesture screenshots; 5. Special needs can be used to scroll screenshots, screen recording functions or third-party tools such as Snagit and Lightshot. Master the commonly used shortcut keys to be familiar

YourIPaddressisessentialforinternetconnectivityandnetworkmanagement.TocheckyourpublicIPaddress,search“WhatismyIP?”onGoogle,useasmartphonebrowser,orvisitdedicatedwebsiteslikewhatismyipaddress.com.ForyourlocalIPaddress,followthesesteps:1)OnWindows,open

The core of artificial intelligence is algorithms, especially models that can learn laws from data, such as deep learning. It trains the system through a large amount of data, allowing it to make judgments on new situations, such as face recognition and chatbots. AI is not really intelligent, but statistical methods that mimic human behavior. Common applications include voice recognition (such as Siri), image recognition (such as Alipay face-scanning payment), recommendation systems (such as TikTok and Taobao recommendations), and autonomous driving. AI's capabilities have boundaries, it can only work within the scope of training data, has no real awareness, and relies on a large number of computing resources. When looking at AI, it should be rational. It is an efficient tool but not perfect. It can be used to improve efficiency, but it also needs to be wary of its limitations.

The key to converting PDF to Word is to select the right tool and pay attention to the format preservation. ① Use Adobe Acrobat to directly export to .docx, which is suitable for text-type PDF and is not easy to mess with. The operation steps include opening the file, clicking "Export PDF", selecting the format and downloading and checking; ② Online tools such as Smallpdf and iLovePDF are suitable for daily simple conversion, but you need to pay attention to privacy risks and possible format confusion; ③ New version of Word supports direct import of PDF, which is suitable for situations where only small edits are required. The operation is to insert files and automatically identify content by Word; ④ Scanned files must first use OCR tools to identify text, and pay attention to details such as font changes and misalignment of column tables. It is recommended to manually adjust after conversion to ensure that

If you want to view the graphics card driver version on your computer, you can do it by: 1. Use Device Manager to view: Win X to open the Device Manager, expand the display adapter, right-click the graphics card to select properties, and view the version and date in the driver tab; 2. View through DirectX diagnostic tool: Win R enter dxdiag to view the driver version and related graphics information in the display tab; 3. Use the official software of the graphics card manufacturer to query: such as NVIDIA's GeForceExperience, AMD's Radeon Software or Intel's Driver&Support Assistant, the main interface will display the current driver status and support updates; 4.

The key to building a website is to select the right tools and follow a clear process. 1. First, clarify the website goals and types, such as blogs, official websites, e-commerce, etc., and select adapter tools, such as WordPress, Shopify or Wix. 2. Register the domain name (recommended.com) and select a hosting platform, such as hosting, Vercel or Netlify. 3. Design the page structure, including homepage, about us, product pages, etc., to ensure that the layout is clear and easy to use. 4. After going online, continue to optimize content, check links, adapt to mobile terminals, and improve visibility through SEO. Follow the steps and the website construction can be completed within a few days.