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Displaying posts with tag: heterogeneous (reset)

Replication Renaming Schemas, Tables and Columns
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Schema definitions on replication slaves sometimes differ. Ability to rename schemas, tables and columns and still setup replication with comfort is useful for MySQL to MySQL replication, while for heterogeneous topologies like these, it's a must. In this article I'll present a component which I recently developed to enable an easy way of renaming database objects during both (a) initial slave load (provisioning) and (b) real-time replication.

It is called RenameFilter and is part of the latest Tungsten Replicator build. RenameFilter works with all DBMS types that Replicator supports.

Specifying What to Rename


First, let's look at how rename definitions file looks like. It is a CSV file which




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ddlscan - Utility to Help Analyze and Migrate Database Schemas
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Intro


While working on one of the MySQL to Oracle replication projects for Continuent, I needed to implement an open-source utility for transforming MySQL schema to an Oracle dialect (DDL statements that create specific schema on Oracle) to save from otherwise tedious work. This article introduces ./ddlscan tool, which does that and is extensible to do much more.

Ingredients


Here's what you'll need:
  • Your favorite DBMS with some tables. Currently supported MySQL, Oracle and PostgreSQL.
  • Latest Tungsten Replicator build. Not even needed to install, enough to untar.
  • Velocity template of your





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Replicate from Oracle to MySQL *without* GoldenGate
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Intro

Oracle is widely use to support back-end systems.  On the other hand, MySQL is the "go-to" data management solution for the web-facing part of many businesses.  If you have both Oracle and MySQL in-house, you may already also have the need to share data between them.  In this article I'll describe software that my colleagues and I have been working on to move data from Oracle to MySQL in real-time without costing an arm and a leg.

Tungsten to the Rescue!

Latest Tungsten Replicator has many features, most of which are open-source, but the recent one for me is particularly exciting - thanks to the





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A Glance at Real-Time Replication From MySQL To Oracle
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Intro
The open source Tungsten Replicator is very powerful. It's exciting to see how a flexible initial design allows to push the boundaries of replication with each new release. The recently published System of Record approach for multi-master databases does exactly this for multi-master databases.

Nevertheless, in today's database environments it is often not enough to move data, however well it is done, between the nodes of a single DBMS vendor like MySQL.  There is an entirely new set of challenges that appear when Oracle joins the Enterprise room.







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Showing entries 1 to 4

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