IBM offers a lot of flexibility with its data replication technologies (CDC, Q Replication, and SQL Replication). As a result, we get a lot of questions about what's needed under various circumstances. This post is a collection of links to answers for the most common questions I get asked. Of course, as you read these, remember that IBM's license documents are the final word on what's allowed. If there's ever a conflict between them and what's posted here, the license document win :)
Note: After the links, I also have a little background about why flexibility drives these questions.
The Links
We don't have a lot, but I divided them by headings to make them easier to navigate visually.
What Do I Get for Free?
How Does Upgrading Work?
What Do I Need...?
- How do I license Data Replication for Hot, Warm, and Cold Standbys?
- How do I license Data Replication for Database Migration?
- How do I license Q Replication for a DB2 HADR secondary?
- What do I need to do data replication with DB2 z/OS v7?
- What do I need to use Q Replication with DB2 pureScale 9.8?
- What do I need to use SQL Replication between DB2 z/OS and DB2 LUW?
What Replaces Old Products?
If you have any suggestions for questions to add, feel free to use the comment section of this blog.
Background
- Which products contain IBM replication technologies?
- What happens if my source and target have different levels of software?
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What do I need to get for my particular configuration?
To determine or understand the answers, you may need a little background related to three areas of flexibility. First, you can get IBM's data replication technologies a number of ways:
- In a stand-alone product.
- As a feature of selected products.
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Included at no additional charge in selected products.
Second, IBM data replication technologies allow a lot of differences between source and target systems:
- The source's operating system can be different from the target's (e.g., AIX vs Windows).
- The source database can be different from the target database (e.g., DB2 z/OS vs InfoSphere Warehouse).
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The source's software can be at a different version and release than that of the target. This includes:
- Operating systems
- Databases
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The replication software
Third, IBM data replication technolgies offer a number of ways they can be set up:
- Capture can often be run remote from the source when the source and capture run on Linux, UNIX, or Windows.
- Apply can run remote from the target.
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A single install can access many sources and targets.
The links in this post help you navigate the options.
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