20 Search results

For the term "HADR tools".
4

HADR Tools: HADR Calculator

The HADR Calculator is one of three HADR tools provided by IBM on developerWorks. For more details on the other(s), see: HADR Tools: the HADR Simulator For the full technical specifications and details on using the HADR tools, see: https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/DB2HADR/ What are the HADR Tools? IBM provides three major HADR tools on a devloperWorks wiki site. The HADR Simulator is...

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HADR Tools: the DB2 Log Scanner

The DB2 Log Scanner is one of three HADR tools provided by IBM on developerWorks. For more details on the other(s), see: HADR Tools: the HADR Simulator For the full technical specifications and details on using the HADR tools, see: https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/DB2HADR/ What are the HADR Tools? IBM provides three major HADR tools on a devloperWorks wiki site. The HADR Simulator...

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HADR Tools: the HADR Simulator

I have not made extensive use of the HADR Tools that IBM offers in the past. Most of my HADR setups to date have either been same-data-center using NEARSYNC or have used ASYNC to copy data between data centers. I haven’t had much cause to tweak my network settings or change my SYNCMODE settings based on hardware/networking. However, I have...

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Ongoing Support of DB2’s HADR

There are some things to be aware of with ongoing support of a HADR system. I thought I’d group them together to provide a primer of do’s and don’ts for support of HADR. Monitoring HADR HADR does occasionally stop all by itself. Also, system events can cause it to not be active. For these reasons, it is critical that you...

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HADR

What is HADR? HADR is DB2’s implementation of log shipping. Which means it’s a shared-nothing kind of product. But it is log shipping at the Log Buffer level instead of the Log File level, so it can be extremely up to date. It even has a Synchronous mode that would guarantee that committed transactions on one server would also be...

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High Availability Options for Db2 LUW

Why Should a Database be Highly Available? It is significantly easier to implement high availability at other levels than it is at the database level. Often the database server is one of the more powerful servers in an environment, and without some fancy footwork there can be only one live copy of data. Ignoring high availability at the database level...

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Happy 5th Blogiversary to db2commerce.com!

This week marks the 5th blogiversary of db2commerce.com! Wow, 5 years! A few statistics: Total posts published (including guest bloggers): 384 Years of averaging one or more posts per week: 3.5 (started in 2012) Total words published (including guest bloggers): 401,245 Longest post: 13,043 words (HADR Tools: HADR Calculator) Shortest post: 27 words (DB2 Haiku – Building Skills) Words published...

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Ember Speaking at DB2 Symposium in Eindhoven on 11 June

For the 5th blogiversary of db2commerce.com, I’m taking a European trip. It has been more than decade since I’ve been overseas, so I’m very much looking forward to it. I’ll be speaking at the DB2 Symposium in Einhoven on 11 June! I’ll be giving a day-long intensive on Lessons Learned Running DB2 for E-Commerce. An outline of what I’ll be...

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Comparing Two Db2 Systems

Sometimes configuration needs to be kept in sync between two or more Db2 systems. There are a variety of reasons – sometimes this is for keeping two HADR servers in sync, and other times it may be for keeping a dev, QA, or Staging system in sync with production. In any case, having an idea of what needs to be...