oracle 19c virtual automatic index test

1. About testing Recently oracle held a series of online sharing, one of the new features of 19c is automatic indexing. I tested it in docker and failed. [oracle@8aa96a41b58b ~]$ sqlplus / as sysdba SQL*Plus: Release 19.0.0.0.0 - Production on Thu Feb 20 09:44:52 2020 Version 19.3.0.0.0 SQL> EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE ...

Posted by jabbaonthedais on Fri, 21 Feb 2020 04:58:37 -0800

SQL Server solution -- a summary of the uniqueness of object naming

About the uniqueness of object naming in SQL Server database. For example, database objects such as tables, indexes, constraints, etc. sometimes, DBA s often need to create or rename objects when doing database maintenance. At this time, they will encounter a problem, the uniqueness of object naming. Although it's a small question, it's not cle ...

Posted by EverToDesign on Thu, 20 Feb 2020 21:10:20 -0800

[Red Sun Security] Web Security Day3 - CSRF Actual Attack and Defense

This article was written by Once, a member of Red Sun Security. If it is incorrect, it should be correct. Hello, we are the Red Sun Security-Web Security Attack and Defense Team.This project is a series of articles about Web security and includes an HTB range for you to practice with. We have given ...

Posted by khf79 on Thu, 20 Feb 2020 18:29:17 -0800

Analysis of generating tag cloud code based on Python 3

This article mainly introduces the generation of tag cloud code analysis based on Python 3. The example code is introduced in detail in this article, which has a certain reference learning value for everyone's study or work. You can refer to the following for friends who need it Tag cloud is the most po ...

Posted by jerbecca on Wed, 19 Feb 2020 08:19:56 -0800

Python crawler learning - crawl the public service platform of construction market supervision

Python crawler learning - crawl the public service platform of construction market supervision The code is only for learning and communication. Please do not use it for illegal purposes. In case of infringement, please click here Contact author delete The code is only for learning and communication ...

Posted by Tubby on Wed, 19 Feb 2020 08:16:37 -0800

Spring takes notes the next day

Spring Learning Notes 1. Implementation of AOP based on aspect annotations Step 1, Create Bean s for Objects <!-- create object --> <bean id="book" class="com.itcast.aop.Book"></bean> <bean id="myBook" class="com.itcast.aop.MyBook"></bean> Step 2: Open AOP operations ...

Posted by Smruthi on Mon, 17 Feb 2020 17:35:45 -0800

hibernate tutorial note 3

Why to learn HQL (hibernate query language) - > this is an official recommendation with powerful functions ? delete Session.delete (object) - > batch delete Add? session.save session.persist Modify - > batch modify Sessin.update (object) Query object obj obj.setXXX(); Query? load get Query all ...

Posted by trilbyfish on Mon, 17 Feb 2020 00:38:56 -0800

How to deal with the serious waiting of shared pool in oracle database under linux environment

Recently, many LINUX environment databases of multiple customers have serious wait related to shared pool during peak business hours, including the library cache lock /latch: shared pool wait event, which leads to slow feedback from business users and failure to establish new business connections. &n ...

Posted by Loryman on Sun, 16 Feb 2020 20:52:03 -0800

Spring boot 2.0.3 integrated druid data source and monitoring

I. Druid Druid is the best database connection pool in the Java language, and also the open source project of Alibaba. Druid is a database connection pool developed by Alibaba called monitoring. In terms of function, performance and scalability, Druid is superior to other database connection pools, including DBCP, C3P0, BoneCP, ...

Posted by Alffallen on Sat, 15 Feb 2020 11:20:50 -0800

MyBatis is that simple

0. Introduction to MyBatis 1) MyBatis is an open source Apache project iBatis, which was migrated to Google Code by Apache Software Foundation in June 2010. As the development team moved to Google Code, iBatis 3.x was officially renamed MyBatis and the code was migrated to Github in November 2013 2) The term iBatis comes from a combination of ...

Posted by nsantos on Fri, 14 Feb 2020 10:12:52 -0800