How to delete duplicate data in an Oracle database

The following articles mainly describe how to efficiently Delete duplicate data from Oracle databases.) We all know that due to the rapid economic development, the enterprise scale is also growing rapidly, the related information and data volume are explosively increasing.

The decision makers may find out why I cannot access the data required by the decision, why is my application system referencing data from last week, and why is there so many data copies in the system, and most of them are not accurate?

The answer to these questions is actually very simple. Traditional data processing methods cannot meet enterprises' needs due to technical restrictions. Only real-time data collection methods can provide accurate analysis data support for correct decision-making, reduce information delay, ensure rapid business response, and promote the improvement of business value.

However, when enterprises decide to implement real-time data, they find that they are faced with many challenges, such as difficulties in evaluating development costs, infrastructure reliability, and data quality. Oracle provides a completely unified enterprise-level real-time data solution, Oracle Data Integration, to meet the market and enterprise development needs.

Oracle Data integration solution

Oracle Data integration solutions are used to build, deploy, and manage real-time data-centric architectures in SOA, BI, and data warehouse environments, it includes all the elements of data integration-real-time data movement, conversion, synchronization, data quality, data management, and data services-to ensure timely, accurate, and consistent information of various complex systems.

By using Oracle Data Integration, enterprises have reduced their development costs by 30%, the data processing speed has increased by 50%, and the Business Process execution time has been reduced by at least 70%. These cost savings and efficiency improvements are essential for enterprises to adapt to today's extremely challenging global economic environment.

Oracle Data integration solutions include Oracle Data Integrator Enterprise Edition and Oracle GoldenGate.

OracleData Integrator Enterprise Edition

Oracle Data Integrator Enterprise Edition is an important part of Oracle Data integration solutions. It provides the same kind of best batch Data mobile and conversion technology with a performance of 10 times higher than traditional ETL, it can efficiently move data between source and target across heterogeneous systems, improving performance while reducing the cost of data integration. And the fastest conversion speed in the industry is created on the Oracle Exadata V2Sun Oracle database server. In addition, the hot swappable knowledge module is modular, flexible, and scalable.

Oracle Data Integrator Enterprise Edition optimizes Oracle databases and provides real-time Data warehouses with advanced ETL/ELT and Data Modeling functions. Oracle Data Integrator Enterprise Edition can also work with Oracle SOA suite to achieve service-oriented Data integration and management, providing enterprises with more flexible Data services.

Oracle GoldenGate

Oracle GoldenGate is a new Component of Oracle Data Integration products. It provides real-time data integration and continuous availability solutions without affecting system processing functions, this allows enterprises to significantly improve the availability, reliability, and performance of key systems of the entire enterprise. Specifically, Oracle GoldenGate provides real-time, low-impact capturing, routing, conversion, and delivery of transaction data between heterogeneous environments, with a flexible topology structure, provides one-way data replication, two-way data replication, point-to-point replication, broadcast replication, centralized replication, and multi-level replication.

Oracle GoldenGate not only provides fast real-time data integration and batch data exchange, but also provides reliable data quality, real-time business intelligence BI), higher online transaction processing OLTP) performance and 24-hour continuous data availability for key task systems.

Oracle GoldenGate fully integrates the GoldenGate software into the solution of Oracle Data Integration suite, providing efficient real-time data integration and replication technology for Oracle Integrated middleware that has little negative impact on the production system, it also provides a comprehensive heterogeneous data integration platform.

Oracle GoldenGate can transmit data between heterogeneous sources and target systems in real time with the lowest IT infrastructure overhead, so as to adopt real-time business intelligence solutions, it implements multi-direction data synchronization for Distributed Systems, zero-downtime system upgrades, and Disaster Tolerance, and migrates data between heterogeneous Oracle databases, operating system platforms, and servers.

The main advantages of Oracle GoldenGate include:

High Performance: mobile data is moved in seconds. By capturing changed data from transaction logs, the performance of the source system and network is avoided, thus reducing the infrastructure cost, it also uses timely data to enhance business insight and provide data support for correct decision-making.

Reliability: data is transmitted and delivered while transaction integrity is maintained. In case of interruptions and downtime, the breakpoint check mechanism is used to continue data transmission from where the interruption occurs. These functions minimize the risk of data loss, which may seriously affect business operations.

Heterogeneous: supports various open systems/open source code and legacy databases on all major platforms, and supports one-way or two-way deployment on multiple topology structures. This flexibility helps you to use a single real-time data integration and replication technology throughout the enterprise, reducing complexity and total cost of ownership while meeting the needs of changing IT environments.

In addition, Oracle GoldenGate also provides the high-speed data compression software Oracle GoldenGate internal data, which can identify and report data differences between heterogeneous Oracle databases without affecting availability. Oracle GoldenGate also provides functions such as event marking infrastructure, initial load capabilities and data encryption, automatic memory management, ETL and JMS integration. In addition, Oracle management software packages for Oracle GoldenGate make Oracle GoldenGate easy to deploy throughout the enterprise.

More than 5000 customers are currently using Oracle Data integration technologies, including Oracle Data Integrator Enterprise Edition and Oracle GoldenGate, and use these technologies as the basis for real-time Data warehousing and business intelligence solutions. In particular, the new GoldenGate product has more strategic significance for Oracle, goldenGate has over 500 customers and over 4,000 successful cases in the financial services, communications, healthcare, public sector, retail and Public Utilities industries, customers in the United States only include the first four of the five major commercial banks, the busiest three ATM networks, the top eight of the 10 financial data service companies, and the top five telecom suppliers. among the top 4 and 5 retail companies.

By adopting the Oracle Data integration solution, these enterprises not only obtain the sub-second-level speed to move data across regions around the world, but also distribute application transactions across multiple Oracle databases, it can also provide accurate and reliable data for global business processes around the clock, detach operation reports to Oracle Exadata, and improve OLTP performance.

Xiao bailing, chief product strategy/solution expert of Oracle Greater China product strategy department, said: "Oracle Data integration solutions can significantly improve the accessibility, reliability, and quality of key data between enterprise systems, help enterprises reduce costs, reduce risks, ensure business continuity, and improve business insight, ultimately, the goal of increasing business value is achieved. We hope that the Oracle Data integration solution can help more enterprises achieve real-time access to the continuity of key business information and improve business intelligence throughout the enterprise ."