How To Create Database Link In Oracle

Earlier this month, Oracle began shipping large data machines (Oracle http://www.aliyun.com/zixun/aggregation/13527.html ">BIG Data Appliance"), analysts said. This will force major competitors such as IBM, HP and SAP to come up with Hadoop products that tightly bundle hardware, software and other tools. On the day of shipment, Oracle announces that its new product will run cloud ...

After more than eight years of practice, from Taobao's collection business to today to support all of Alipay's core business, and in the annual "Double Eleven Singles Day" continue to create a world record for the transaction database peak processing capacity.

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; For Telecom Enterprises, database security is very important. Just imagine the problem with the recharge system? What happens to the system when a mobile phone user checks the bill at the end of the month? The following is a telecom enterprise database operators in the database security aspects of some of the experience, as well as the star-Chen database security experts to give suggestions, hope to have some inspiration and reference. Database version ...

What is an MDB database? Any network administrator who has a bit of experience in making Web sites knows that the "iis+asp+access" combination is the most popular way to build a website, and most small and medium Internet sites use the "package", but the attendant security issues are becoming more pronounced. The most easily exploited by attackers is the MDB database being illegally downloaded. The MDB database is not secure, so long as the intruder guesses or scans the path to the MDB database, it can be easily downloaded to the local hard drive by the download tool, and then knot ...

Logminer is an actual, useful analysis tool that Oracle has provided since 8i, which makes it easy to obtain specific content in Oracle Redo log files (archived log files), Logminer analysis tools are actually made up of a set of PL SQL package and a number of dynamic views that can be used to analyze online logs and archive logs to obtain a database of past detailed, specific operations, very useful. Why do you use Logminer? Mainly for the following reasons: When the database has been mistakenly operated, need not be completed ...

Content Summary: The data disaster tolerance problem is the government, the enterprise and so on in the informationization construction process to be confronted with the important theory and the practical significance research topic. In order to realize the disaster tolerance, it is necessary to design and research the disaster-tolerant related technology, the requirement analysis of business system, the overall scheme design and system realization of disaster tolerance. 　　Based on the current situation of Xinjiang National Tax Service and the target of future disaster tolerance construction, this paper expounds the concept and technical essentials of disaster tolerance, focuses on the analysis of the business data processing of Xinjiang national tax, puts forward the concrete disaster-tolerant solution, and gives the test example. Key words: ...

Cloud World Congress into the next step, the cloud technology elite. Tian Yun Technology Vice President Reitao: Today is really all star flashing, see the valley of the elite gathered here, so we want to pull back to China, pull back to Beijing's also Zhuang, to see what happened in the local enterprises. We invite four guests to chemistry today. First, Si Jie system company Cloud Platform Product Department CTO Liang, Mr. Liang in SI Jie company responsible for cloud product strategic planning and the overall technology implementation, once was the founder of Cloud.com, this year to think Jay. The second is Chen Shangyi, is the Chairman of the Technical committee of Baidu Company ...

Today we're going to introduce Vsphare, starting with the entire third generation suite, with a virtualization consolidation ratio of around 30%. By 2010 to reach 40%, and now the fifth generation of precipitation can achieve more than 50% of the integration efficiency. For now, all the virtualization consolidation is accelerating, because customers have realized the benefits of virtualization, the benefits of cloud computing, so the entire virtualization is expanding, the fifth generation of Vsphare has been very optimized. This map is the fifth version of the cloud computing platform's main function, the most important is vSphare5, ...

Several years of work down, also used several kinds of database, accurate point is "database management system", relational database, there are nosql. Relational database: 1.MySQL: Open source, high performance, low cost, high reliability (these features tend to make him the preferred database for many companies and projects), for a large scale Web application, we are familiar with such as Wikipedia, Google, and Facebook are the use of MySQL. But the current Oracle takeover of MySQL may give us the prospect of using MySQL for free ...

Relative to structured data (the data is stored in the database, it is possible to use two-dimensional table structure to express the implementation data logically, the data that is not convenient to use the database two-dimensional logical table to represent is called unstructured data, including all format Office documents, text, picture, XML, HTML, various kinds of reports, images and audio/ 　　Video information and so on. An unstructured database is a database with a variable field length and a record of each field that can be made up of repeatable or repeatable child fields, not only to handle structured data (such as numbers, symbols, etc.), but also ...