Welcome!

Linux Containers Authors: AppDynamics Blog, PagerDuty Blog, JP Morgenthal, Pat Romanski, Automic Blog

Related Topics: Linux Containers

Linux Containers: Article

Migrating to Open Source Databases Running on Linux

Databases Like MySQL, Ingres r3, PostgreSQL, and Firebird Have Aroused a Lot of Interest

Open source databases running on Linux like MySQL, Ingres r3, PostgreSQL, and Firebird have aroused a lot of interest.

Database developers and corporate users are heralding the anticipated the release of MySQL 5.0, which includes enterprise-level features such as stored procedures, triggers, and views.

Last August Computer Associates made Ingres r3 available under the CA Trusted Open Source License and followed up with a Million-Dollar Challenge, an unprecedented offer to the open source community to develop migration toolkits for the system.

Tony Gaughan, senior VP at Computer Associates, says, "The relational database world is evolving. Enterprise customers are demanding rich, functional products that scale, while lowering the total cost of ownership. Ingres has the pedigree of one of the most seasoned and functional products in the market that can be flexible enough to meet the demands of even the largest organizations."

The publicly traded data infrastructure software company Pervasive Software now services and supports PostgreSQL. Marten Mickos, CEO of MySQL AB, as quoted in SearchEnterpriseLinux.com, is optimistic about open source databases this year betting that "We will see increased growth, faster growth than before, in the adoption of open source in the enterprise, not just for MySQL, but across the board."

Though surely not breaking news, there are many compelling business and technical reasons for migrating to an open source database running on Linux. IT organizations are becoming more focused on business value and are asking questions like "Are we overspending on software? Are there more cost-effective alternatives that meet our specific needs and don't lock us into a long-term relationship with a vendor?"

Besides, unlike the desktop, a database isn't a user-facing technology. A change or modification to a database is less likely to "stir a hornet's nest" among a company's transactional or knowledge workers.

From a technical perspective, security and flexibility are being given serious consideration. For example, since Microsoft SQL Server is tightly integrated into the Windows platform, it's exposed to Windows virus attacks and, as a result, is vulnerable. There have been numerous documented virus attacks on Microsoft Windows, the worst attacks targeted at SQL Server. The Sapphire/Slammer worm (www.cs.berkeley.edu/~nweaver/sapphire/) exploited a buffer overflow vulnerability in Microsoft SQL Server. It infected at least 75,000 hosts and caused network outages and unforeseen consequences such as canceled airline flights, interference with elections, and ATM failures.

Companies are valuing more and more the need to assume greater control of their development processes. With open source, not only can a company view and modify the source code to fix bugs and add needed features, they can control the code's future development. After a consultant or vendor has developed a specific open source application for a customer, that customer is free to use a different consultant or vendor for future development, maintenance, and enhancements if it likes.

Since it's unlikely that Microsoft will open source SQL Server anytime soon, I thought LinuxWorld readers might find an overview of how to migrate the data structure and data from SQL Server to open source databases running on Linux valuable. A word of caution - tread carefully! A manual migration is extremely tedious. Each step takes many man-hours to complete. And, due to space limitations, I won't address the manual migration of stored procedures, views, and triggers that, admittedly, are important components of the enterprise-level database.

That being said, if considering a migration from Microsoft SQL Sever to MySQL, I would recommend waiting for MySQL 5.0 since the current versions don't have stored procedures, views, and triggers. PostreSQL, Ingres r3, and Firebird support stored procedures, views, and triggers so those databases are ready for migration and implementation today. For additional instructions on migrating stored procedures, views, and triggers please see (www.versora.com/__files/documentation/database_migrationsec.pdf)

Migrating Data Structure
First, you'll need to export the table structure using SQL Server Enterprise Manager:

  • At the SQL server, launch Enterprise Manager and connect to the database you intend to migrate.
  • Select all the tables that are being migrated, right-click, and choose Generate SQL Scripts.
  • In the dialog that appears, switch to the ‘Formatting' tab. Uncheck Generate the DROP <object > Command for each Object box. Check Generate Scripts for All Dependent Objects.
  • To make things more manageable, you'll probably want to choose Create One File Per Object. Click OK and indicate where to save the script files. This procedure will create a data structure that works only with SQL Server.
Tweaking will be required for the new database. Consider removing the brackets around names and types. Change types to corollary types. Remove the permissions and index statements from the end of each of these files and store them in a temporary "holding" file that will be applied after data is applied (for speed reasons). If statements aren't revised as indicated, migrating the data will be significantly slower.

When completed, copy these files to the new machine (via file sharing, by burning a CD, or any other way you want), and apply them to the new database. Each database has its own way of running SQL script files though most will let you execute scripts via command-line redirection. For example, PostgreSQL has a command-line tool called psql used to import SQL script files. An example command line for PostgreSQL might look something like this:

psql <dbname> -U <username> < sqlscript.sql

The total time needed to move the data structure manually varies depending on which database you're migrating to, how complicated existing tables are, and how many tables there are. Though this isn't a difficult phase, it can be tedious.

More Stories By Jon Walker

Jon Walker serves as CTO of Versora, an ISV providing Microsoft to Linux migration software. Mr. Walker recently has co-authored 2 whitepapers with Novell titled Migrating from IS Web Servers to Apache SUSE LINUX Enterprise Server 9.0 and Migrating File and Print Servers from Windows to SUSE LINUX Enterprise Server 9. Prior to Versora, Mr. Walker was CTO/VP of Engineering for Miramar Systems. Software developed under his direction at Miramar has been deployed to over 20 million computers worldwide. Mr. Walker has also served as senior technologist for Nortel and Xing Technology (now Real Networks).

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@ThingsExpo Stories
Artificial Intelligence has the potential to massively disrupt IoT. In his session at 18th Cloud Expo, AJ Abdallat, CEO of Beyond AI, will discuss what the five main drivers are in Artificial Intelligence that could shape the future of the Internet of Things. AJ Abdallat is CEO of Beyond AI. He has over 20 years of management experience in the fields of artificial intelligence, sensors, instruments, devices and software for telecommunications, life sciences, environmental monitoring, process...
Increasing IoT connectivity is forcing enterprises to find elegant solutions to organize and visualize all incoming data from these connected devices with re-configurable dashboard widgets to effectively allow rapid decision-making for everything from immediate actions in tactical situations to strategic analysis and reporting. In his session at 18th Cloud Expo, Shikhir Singh, Senior Developer Relations Manager at Sencha, will discuss how to create HTML5 dashboards that interact with IoT devic...
So, you bought into the current machine learning craze and went on to collect millions/billions of records from this promising new data source. Now, what do you do with them? Too often, the abundance of data quickly turns into an abundance of problems. How do you extract that "magic essence" from your data without falling into the common pitfalls? In her session at @ThingsExpo, Natalia Ponomareva, Software Engineer at Google, will provide tips on how to be successful in large scale machine lear...
The IoTs will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, will demonstrate how to move beyond today's coding paradigm and share the must-have mindsets for removing complexity from the development proc...
SYS-CON Events announced today that Ericsson has been named “Gold Sponsor” of SYS-CON's @ThingsExpo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. Ericsson is a world leader in the rapidly changing environment of communications technology – providing equipment, software and services to enable transformation through mobility. Some 40 percent of global mobile traffic runs through networks we have supplied. More than 1 billion subscribers around the world re...
You think you know what’s in your data. But do you? Most organizations are now aware of the business intelligence represented by their data. Data science stands to take this to a level you never thought of – literally. The techniques of data science, when used with the capabilities of Big Data technologies, can make connections you had not yet imagined, helping you discover new insights and ask new questions of your data. In his session at @ThingsExpo, Sarbjit Sarkaria, data science team lead ...
SYS-CON Events announced today that Peak 10, Inc., a national IT infrastructure and cloud services provider, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Peak 10 provides reliable, tailored data center and network services, cloud and managed services. Its solutions are designed to scale and adapt to customers’ changing business needs, enabling them to lower costs, improve performance and focus inter...
You deployed your app with the Bluemix PaaS and it's gaining some serious traction, so it's time to make some tweaks. Did you design your application in a way that it can scale in the cloud? Were you even thinking about the cloud when you built the app? If not, chances are your app is going to break. Check out this webcast to learn various techniques for designing applications that will scale successfully in Bluemix, for the confidence you need to take your apps to the next level and beyond.
There is an ever-growing explosion of new devices that are connected to the Internet using “cloud” solutions. This rapid growth is creating a massive new demand for efficient access to data. And it’s not just about connecting to that data anymore. This new demand is bringing new issues and challenges and it is important for companies to scale for the coming growth. And with that scaling comes the need for greater security, gathering and data analysis, storage, connectivity and, of course, the...
In his session at @ThingsExpo, Chris Klein, CEO and Co-founder of Rachio, will discuss next generation communities that are using IoT to create more sustainable, intelligent communities. One example is Sterling Ranch, a 10,000 home development that – with the help of Siemens – will integrate IoT technology into the community to provide residents with energy and water savings as well as intelligent security. Everything from stop lights to sprinkler systems to building infrastructures will run ef...
SYS-CON Events announced today that Fusion, a leading provider of cloud services, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Fusion, a leading provider of integrated cloud solutions to small, medium and large businesses, is the industry's single source for the cloud. Fusion's advanced, proprietary cloud service platform enables the integration of leading edge solutions in the cloud, including cloud...
Digital payments using wearable devices such as smart watches, fitness trackers, and payment wristbands are an increasing area of focus for industry participants, and consumer acceptance from early trials and deployments has encouraged some of the biggest names in technology and banking to continue their push to drive growth in this nascent market. Wearable payment systems may utilize near field communication (NFC), radio frequency identification (RFID), or quick response (QR) codes and barcodes...
The increasing popularity of the Internet of Things necessitates that our physical and cognitive relationship with wearable technology will change rapidly in the near future. This advent means logging has become a thing of the past. Before, it was on us to track our own data, but now that data is automatically available. What does this mean for mHealth and the "connected" body? In her session at @ThingsExpo, Lisa Calkins, CEO and co-founder of Amadeus Consulting, will discuss the impact of wea...
SYS-CON Events announced today that DatacenterDynamics has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY. DatacenterDynamics is a brand of DCD Group, a global B2B media and publishing company that develops products to help senior professionals in the world's most ICT dependent organizations make risk-based infrastructure and capacity decisions.
The IoT has the potential to create a renaissance of manufacturing in the US and elsewhere. In his session at 18th Cloud Expo, Florent Solt, CTO and chief architect of Netvibes, will discuss how the expected exponential increase in the amount of data that will be processed, transported, stored, and accessed means there will be a huge demand for smart technologies to deliver it. Florent Solt is the CTO and chief architect of Netvibes. Prior to joining Netvibes in 2007, he co-founded Rift Technol...
We’ve worked with dozens of early adopters across numerous industries and will debunk common misperceptions, which starts with understanding that many of the connected products we’ll use over the next 5 years are already products, they’re just not yet connected. With an IoT product, time-in-market provides much more essential feedback than ever before. Innovation comes from what you do with the data that the connected product provides in order to enhance the customer experience and optimize busi...
SYS-CON Events announced today that Stratoscale, the software company developing the next generation data center operating system, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Stratoscale is revolutionizing the data center with a zero-to-cloud-in-minutes solution. With Stratoscale’s hardware-agnostic, Software Defined Data Center (SDDC) solution to store everything, run anything and scale everywhere...
Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified – now it's a component-based well-performing framework. This immersive one-day workshop at 18th Cloud Expo, led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and the product company SuranceBay, will provide you with everything you wanted to know about Angular 2.
SYS-CON Events announced today that Men & Mice, the leading global provider of DNS, DHCP and IP address management overlay solutions, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. The Men & Mice Suite overlay solution is already known for its powerful application in heterogeneous operating environments, enabling enterprises to scale without fuss. Building on a solid range of diverse platform support,...
Whether your IoT service is connecting cars, homes, appliances, wearable, cameras or other devices, one question hangs in the balance – how do you actually make money from this service? The ability to turn your IoT service into profit requires the ability to create a monetization strategy that is flexible, scalable and working for you in real-time. It must be a transparent, smoothly implemented strategy that all stakeholders – from customers to the board – will be able to understand and comprehe...