aws database migration

Oracle Database migration-BasicsOracle Database migration-Basics As a developer, We must master database knowledge. However, the company's database is maintained by a dedicated DBA. Generally, we provide an environment address, an

Production Environment:Source database: RHEL + Oracle 11.2.0.3Target database: HP-UX + Oracle 10.2.0.4Requirements: Migrate part of the table 11.2.0.3-->10.2.0.4, if some tables within the migration scope already exist in the target library, then replace. This migration data volume Initial scenario: the lower version o

EF architecture ~ CodeFirst from initialization to database migration, efcodefirstIntroduction CodeFirst is a development mode of EntityFrameworks, that is, code first. It mainly uses Business Code to generate databases through code, and adds the powerful data table comparison function of migration to generate database

The local server is: WampserverA new Laravel5 project was created with the composer command under the WWW directory, and the version is 5.1.26In many laravel introductory tutorials, you create data tables with commands, and then migrate and populate them, what's the difference between building a table directly in phpMyAdmin or Navicat premium? If it is the same, then what are the benefits of using Laravel's migration? After this issue, learn about Jel

First, the need for database upgradesDatabase upgrades are a common problem for database administrators, if your application uses new features of the new version of the database, and if the database is overloaded, there can be no fundamental improvement through hardware and software adjustments; If you want to enhance

EF architecture ~ CodeFirst data migration and database deletion prevention, efcodefirst Back to directory This article introduces two concepts to Prevent Automatic database deletion. This is because the original database is deleted when the data entity changes in code first mode,And add new data tables, but this is un

EF Code First Migrations database migration, efmigrations1. EF Code First creates a database Step 1: Create a console application Step 2: Install EntityFramework Run the following statement on the Package Manager Console: PM> Install-Package EntityFramework2. Project Structure Two entities and ing. The PortalContext code is as follows: using System;using Sy

2014_10_12_000000_create_users_table.php file where we want to create the table. A migration class contains two methods up and down. The up contains the details of creating a table. Down and the former are the opposite. Schema::create accepts two parameters. The first is the name of the table you want to create; the second is a closure (anonymous function) that gets the Blueprint object that defines the new table. For more information on

data file, and re-import the data.2) Stop related services and avoid writing data[[Email protected]_server/]# systemctl stop zabbix-server[[email protected]_server/]# systemctl Stop httpd3) Clear Historical data[Email protected]_server/]# mysql-uroot-pmysql > Use zabbix;database changedmysql > TRUNCATE TABLE history; Query OK, 123981681 rows affected (0.23 sec) MySQL > Optimize table history;1 row in Set (0.02 sec) mysql > truncate t Able History_uin

database: 2. EF Code First Database migration 2.1. Build the Database Modify the static constructor of the class file PortalContext.cs to remove the setting that removes the current database from rebuilding the new database when

Label:1. EF Code first creates a database Create a new Console application portal and add entityframework through the Package Manager console. In the Package Manager console, execute the following statement to install EntityFramework. Pm> Install-package EntityFramework After successful installation, the interface prompts such as: Add two entity classes to the new portal console application, with the following code structure: Where the code for the

/detail/lejuo/7923691, the specific operation can refer to: http://jingyan.baidu.com/ Article/ff42efa964dab7c19f220210.html(2) Rebuilding the database access code of software systemThe Access database accesses a driver that is inconsistent with MySQL and requires a careful review of the code in the software system and the replacement of the MySQL database access

1. Open the Package Manager console , and enter the enable-migrations command. 2, when the model changes, through the package Manager Console input add-migration instructions, to add a database migration version, input must take a version of the parameters, for example, addusername. 3. Database upgrade directive Updat

As one of the mainstream databases in the current market, Oracle databases are developed on many applications. Due to the reasons for upgrading Oracle databases and different application providers, several Oracle versions may exist in an application unit, such as Oracle 7, Oracle 8, Oracle 8i, and Oracle 9i .. Considering the convenience of database centralization, maintenance, and backup, and avoiding repeated investment in equipment, when applicatio

' E:/ORADATA/ZSTEST/ZS_IDXDATA02. DBF ',' D:/oracle/product/10.2.0/oradata/zstest/zskj_idxdata01. DBF ',E:/oradata/zstest/zskj_idxdata02 '. DBF 'CHARACTER SET ZHS16GBK;The control file has been created.sql> ALTER DATABASE open resetlogs;The database has changed.After rebuilding the control file, remember to re-enable the temp table space, and then trace the control file script with hintssql> ALTER tablespa

exists in the database with an enum-type field when the component is integrated, the migration command will be executed with an error.To solve this problem, we need to map the enum to a string type:$connection->getDatabasePlatform()->registerDoctrineTypeMapping(‘enum‘,‘string‘);ConclusionAt this point, we have completed all migration of the

Some introductionCodefirst is a development model of Entityframeworks, that is, code first, it is based on business code, through the code to generate the database, and with migration powerful data table comparison function to generate the database version, so that the program developers do not maintain database change

Tags: ACK Power Blog API ext product his control highlightPackage Manager console under NuGetCommand: Initial migration command: add-migration init-context DAL. Productcontext Full Name: Migrations Add initialcreate non-first time migration: Migrations Add migration log name for example: add-

Tags: migrating database/USR code overflow from-down one obj alembicDatabase migration Migrate the database by creating a virtual flask environment. First, create a virtual environmentvirtualenvwrapperThere is a function in the library mkvirtualenv to create a virtual environment (make Vsan envirement). Using commandsmkvirtualenv flask-tutorial --py

Cross-platform cross-version database migration using RMAN in the same byte sequence Cross-platform transmission DatabaseRMAN's convert database command is used to move the entire database from one platform to another. When the source platform and the target platform are in the same byte sequence, RMAN automatically co