Instant Database Reset and Easier Bug Fixing using Clones

The article demonstrates how the use of lightweight, containerized clones removes the problem of 'mopping up' after a database migration fails part way through, particularly in database systems like MySQL that don't support DDL transaction rollback. A quick reset to the previous saved revision provides 'instant rollback'. It also demos how they make it much easier and less disruptive to do retrospective bug fixing on older migrations. Read more

Using Flyway and Data Containers for Database Testing: Rapid Setup and Teardown

This article demonstrates how to use the rgclone CLI in Redgate Test Data Manager to automatically save each new version of a database created by Flyway as a data container revision, tracking which Flyway version maps to which container revision. We can then, from a single data container, load any version of the database during test setup, as well as quickly 'reset' a container during test teardown. Read more

Data Container Revisions, Resets and Graduations

Redgate Test Data Manager allows developers to save each new version of a database as a data container revision. After making local development changes to the container, or running tests, they can instantly reset it to its starting revision. They can also load any previous revision and can even 'graduate' a revision to an image, providing a new baseline for ongoing team development. These techniques are especially effective when used in conjunction with Flyway, which automatically tracks the version of every copy of the database. Read more

Running Database Tasks and Tests on Clones in Redgate Test Data Manager

This article demonstrates how to adapt your current database development and testing regimes to use clones (data containers) in Redgate Test Data Manager. It demonstrates how to handle dynamic connection details and how to get from the containers the connection and database information that your development tasks and tests need to function correctly. Read more

Getting Started with Cloud-hosted Databases using Spawn

This article will get you started with Spawn, a hosted database cloning service running entirely on Amazons AWS. Read more

Running SQL Clone on an Azure VM with Azure File Storage

How to use SQL Clone in the Azure Cloud, installing it on an Azure Virtual Machine, storing a copy of your SQL Server database as an 'image' on an Azure File Share, and then deploying multiple clones to another Azure VM or to a remote machine. Read more

Solving the Provisioning Problem in Database Development using Clones

When database development is described, the details often get vague when the data gets beyond spreadsheet-size. There is 'hand-waving' talk of providing databases for each developer, but little detail of how you would provision all the databases that would be needed, at the correct version and with the correct development data, and then keep them all in sync with the source code, as developers commit changes. This article explains the requirements, and how SQL Clone can meet them. Read more

Getting Started with Automatic Database Branch Switching

Alexander Diab demonstrates how a team of developers can work on and test features in different branches of a SQL Server database development project, while their local development database automatically remains 'synchronized' with the current branch in version control. Read more

How SQL Clone and SQL Change Automation enable seamless Database Branch Switching

Learn how SQL Clone and SQL Change Automation, used together, now allow you to branch your database in Git as quickly and simply as your code. Read more

Cloning all the Databases on a Server

Phil Factor shows uses SQL Clone and PowerShell to automatically create images of all databases on an instance, if they don't already exist, and then create or refresh clones of each one, on all your development servers. Read more

SQL Clone PowerShell Scripting: The Basics

Phil Factor demonstrates some simple examples of how to use SQL Clone's PowerShell library to pass objects between cmdlets, and simplify common tasks, such as creating and deploying clones from various images. He then documents the objects and cmdlets, and illustrates their inputs and outputs. Read more

Unwrapping, Unboxing and Installing SQL Clone

If you are evaluating a tool such as a text editor or spreadsheet, it is easy: you just install it, you run it, you decide whether you need it. Job done. However, a similar 'unboxing' or 'unwrapping' of SQL Clone, and installing across a network, is not so quick and easy. Phil Factor's solution is to install and run a complete installation of SQL Clone on a single box. This allows you to try everything out, creating images and deploying clones, while isolated from the network. It can then be extended across a network, subsequently, when it's been fully tested. Read more

SQL Clone on your Laptop

Phil Factor provides a PowerShell script to disconnect your laptop without risking error 21, if you're working with SQL Clone and need to go offline. The same script will then bring the clone database back online smoothly, once you're reconnected. Read more

SQL Clone for Unit Testing Databases

Phil Factor demonstrates how to use SQL Clone to create 'disposable' SQL Server databases, for development and testing work. You can spin up a clone, use it to unit test your code, messing up the clone in the process, then reset the clone in seconds, ready for the next test. Read more

Reporting on the Status of Clones During Database Development

Phil Factor uses SQL Clone, PowerShell and Visio to build a live 'clone network' diagram showing when there was last activity on each clone, and the number of object changes made to each one, alongside useful metadata such as the clone and image sizes, who created them and when. Read more

Safely Deleting Clones and Images during Database Development and Testing

Whenever you’re ready to refresh a test cell with the latest database version, you need a safe way to drop the current set of clones, and the parent image, without losing any unsaved work. Phil Factor provides a PowerShell script that automates this process so it runs in the time it takes to grab a coffee, after which can quickly deploy the new clones. Read more

Scripting Custom SQL Server Clones for Database Development and Testing

Phil Factor shows how to automatically apply T-SQL modification scripts during image and clone creation. Using this technique you can, for example, apply data masking to all clones, or customize an individual clone to work on a special variant or branch version, or set up instance level objects like Agent jobs or linked servers. Read more

Deploying and Reverting Clones for Database Development and Testing

Demonstrating how to use PowerShell automation to create a suite of clones, for testing or development work, with the ability to revert a clone to its original state, instantly, ready for the next set of tests to begin. Read more

How to create and refresh development and test databases automatically using SQL Clone and SQL Toolbelt

A PowerShell automation script to build a SQL Server database from source control, seed it with dummy data, document it, and then deploy copies to any number of test and development servers. Read more

Database Continuous Integration with SQL Clone and SQL Change Automation

Phil Factor provides the basis for a Database Continuous Integration process, using SQL Change Automation to build the latest database, and then SQL Clone to distribute it to the various team-based servers that need it. Having honed the process, you can run it every time someone commits a database change. Read more

How to reset your development database in seconds using SQL Clone

Owen Hall describes the new "clone reset" feature, how it works and the database development and testing processes it enables, or makes simpler and quicker. Read more

Getting Started with Database Development Using SQL Provision

Steve Jones shares how he migrates his existing development databases to clones, using SQL Provision and a simple PowerShell function. Read more

SQL Server Database Provisioning: Getting Started with SQL Clone

Tony Davis takes a ‘first look’ at cloning databases with SQL Clone, reviewing some of the database provisioning challenges that we seek to overcome, explaining briefly how SQL Clone works, and then walking through a simple example of creating a clone from a live database. Read more

Database provisioning from backups using SQL Clone

A step-by-step guide to creating an image from a database full backup, or from a full backup plus differential backup. Read more

Basic data masking for development work using SQL Clone and SQL Data Generator

Richard Macaskill describes a lightweight copy-and-generate approach for making a sanitized database build available to development teams, using SQL Clone, SQL Change Automation and SQL Data Generator. Read more

Backup and restore of a SQL Clone

What if you now do development work on a clone, but you to continue working on you own local clone while ‘disconnected’, such as when travelling? One simple option if the original database contains no private data, or the image has been masked, is to performance a normal backup and restore operations the clone, although you'll now be working with a normal, full-sized database. Read more

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