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Showing entries 1 to 10 of 38 10 Older Entries

Displaying posts with tag: Migration (reset)

Amazon RDS Migration Tool
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Amazon has just released their RDS Migration Tool, and Pythian has recently undertaken training to use for our clients. I wanted to share my initial thoughts on the tool, give some background on its internals, and provide a walk-through on the functionality it will be most commonly used for.

There are many factors to consider when evaluating cloud service providers, including cost, performance, and high availability and disaster recovery options. One of the most critical and overlooked elements of any cloud offering though, is the ease of migration. Often, weeks are spent evaluating all of the options only to discover after the choice is made that it will take …

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Data Warehouse in the Cloud - How to Upload MySQL data into Amazon Redshift for reporting and analytics
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October 27, 2014 By Severalnines

The term data warehousing often brings to mind things like large complex projects, big businesses, proprietary hardware and expensive software licenses. With Hadoop came open source data analysis software that ran on commodity hardware, this helped address at least some of the cost aspects. We had previously blogged about MongoDB and …

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MySQL Workbench 6.2: New Migration Source and Sync Feature
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MS Access Migration

MS Access support was added to the Migration Wizard in MySQL Workbench 6.2, joining MS SQL Server, Sybase ASE, Sybase SQL Anywhere, PostgreSQL, SQLite and “Generic ODBC” as migration sources. You can read more about it in How-To: Guide to Database Migration from MS Access using MySQL Workbench.

Include Model Scripts in Forward Engineering and Synchronization

Workbench modeling has always supported attaching SQL script files to the …

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How-To: Guide to Database Migration from MS Access using MySQL Workbench
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Edit: added sample table output in MySQL

MySQL Workbench 6.2 introduces support for MS Access migration. This tutorial should help you get your Access tables, indexes, relationships and data in MySQL.


Because MS Access ODBC drivers are only available for Windows, migrating from it is also only possible from Windows. As for the destination MySQL server, you can have it in the same local machine or elsewhere in your network.

MS Access stores relationship/foreign key information in an internal table called MSysRelationships. That table is …

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Big Data Integration & ETL - Moving Live Clickstream Data from MongoDB to Hadoop for Analytics
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June 16, 2014 By Severalnines

MongoDB is great at storing clickstream data, but using it to analyze millions of documents can be challenging. Hadoop provides a way of processing and analyzing data at large scale. Since it is a parallel system, workloads can be split on multiple nodes and computations on large datasets can be done in relatively short timeframes. MongoDB data can be moved into Hadoop using ETL tools like Talend or Pentaho Data Integration (Kettle).


In this blog, we’ll show you how to integrate your MongoDB and Hadoop datastores using Talend. We have a MongoDB database collecting …

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Porting from Oracle to MySQL
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A potential customer asked my about porting her application from Oracle Database to MySQL.

I always try to start with the "why" (a dear friend bought me this book, recommended:

She said "cloud!". I said "OK!".

I conducted a short research, found many things in many places all over the place, brought them to a nice email I sent her back and then thought I'll post it here and make it public as it might be useful for us all. If you feel that I missed something, add comments, send feedback.

These are the leading tools …

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MySQL 5.6 GTIDs: Evaluation and Online Migration
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A colleague and I have been looking at GTID on MySQL recently and you may be interested in the blog post that results from that. You can see it here.


Webinar Replay & Slides: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
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March 13, 2014 By Severalnines

Thanks to everyone who attended this week’s webinar; if you missed the sessions or would like to watch the webinar again & browse through the slides, they are now available online.


Special thanks to Seppo Jaakola, CEO at Codership, the creators of Galera Cluster, and to Johan Andersson, CTO at Severalnines, for their presentations and the live demo.


Webinar topics discussed: 

  • Application use cases for Galera
  • Schema design
  • Events and Triggers
  • Query design
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Mixing databases usually not optimal
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Dan McKinley (Etsy) wrote an [IMHO] insightful article Why MongoDB Never Worked at Etsy.

First off, it’s important to realise that it’s not a snipe at MongoDB – it’s a fine tool.

The lessons are related to mixing multiple databases in a deployment (administration and monitoring overhead) and the acknowledgement that issues of schema design, scalability and maintenance need attention regardless of which brand or technology you pick for your database. That comes back to the old insight that migrations are rarely worth it (regardless of what you migrate …

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Video Tutorial: Setup a Restricted SQL Server Account for Migrations with MySQL Workbench
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Some users have asked us what is the minimum set of privileges that your Microsoft SQL Server user needs to successfully migrate databases from SQL Server using the MySQL Workbench Migration Wizard. Even though we don’t execute any query that alters anything in your source RDBMS servers, it’s never a bad idea to add an extra security barrier around it.

In short, you need the VIEW ANY DEFINITION permission for the server and the CONNECT and SELECT permissions for the database(s) you want to migrate. But to make this easier for you, we have created a video tutorial showing how to create a user with these permissions using the Microsoft SQL Server Management Studio.

Showing entries 1 to 10 of 38 10 Older Entries

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