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introduce In this paper, we refer to How to deploy spring boot gracefully on weblogic Mybatis is deployed on weblogic Server by using springboot. Environmental Science Development tool: Eclipseweblogic version: 10.3.6.0weblogic-jdk: 1.8.0_91 Technology realization Create Maven project and add it to pom file <project xmlns="http://maven.apac ...

1. In the actual application scenario, we will use: if the data is in the table, update the data; if the data does not exist, insert the data. In oracle, you can use the merge into implementation, and in mysql, you can use the ON DUPLICATE KEY UPDATE. Here, only the merge into implementation method in oracle is introduced. The sql syntax is a ...

Preface Founded in 2000, Wuhan Dameng database Co., Ltd. is a basic software enterprise under China Electronic Information Industry Group (CEC). It specializes in the research and development, sales and service of database management system, and provides users with services such as big data platform architecture consultation, data technology pl ...

After the open-source cross platform development framework Weex, Alibaba once again announced another major open-source project AliSQL. The performance of this version is about 70% better than that of community mysql Alibaba mysql git address git address: https://github.com/alibaba/AliSQL.git0. Check whether there is mysql resid ...

1. Download MySQL 5.6.36 compile free installation package and upload it to / usr/local/src directory (you can also use wget command to download it directly to this directory) Download address https://yunpan.360.cn/surl_ymCGfFYt2Ya 2. Decompression [root@JSH-01 src]# tar zxvf mysql-5.6.36-linux-glibc2.5-x86_64.tar.gz 3. Move the extracted file ...

The function of PostgreSQL's fdw implementation is the cross database operation between each PostgreSQL database and the remote database. The function is the same as oracle's dblink. The environment in this article is shown below: 1.1. Target installation software package [root@hdp06 ~]# yum -y install postgresql10-contrib.x86_64 1.2 creating ...

Brief Introduction As a Java programmer, HashMap is an inevitable data type.This is evidenced by both the frequency of use in development and the frequency of inspection in interviews. HashMap's Past and Present HashMap was born in JDK1.2. With the update of JDK version and to solve hash collision problem in HashMap in JDK1.7,Oracle team at JE ...

The previous life of the analytic index of performance optimization of Oracle Summary: in oracle, index is like a book's catalog, which can speed up the query speed and improve the query efficiency. In oracle, b-tree index is used to store the index. B-number index is a tree structure with branches and leaves. Index is divided into root node, ...

Basic concepts of database data The symbolic record that describes things is called Data Including numbers, words, graphics, images, sounds, archives, etc Store in a unified format in the form of "record" surface Organize different records together to form a "table" It is used to store specific data data base A databas ...

I. demand Regularly generate dmp from A database in oracle database of server A and back it up to server B (save for 10 days) II. Configure scheduled database backup Create A backup directory on server A and give permissions [root@localhost /]# mkdir -p /home/oraclebak #Create a new oracle backup directory [root@localho ...