Db2 Experts on a Data Science Quest
On Linux and Unix anyway. This is actually a common request during build when OS-level patches are applied or other OS-level work needs to be done, especially any related to disks.
I’m not going to go into detail on this one – it is not my area of expertise.… Read the rest
Continue reading »So many times it appears that a database expert is not engaged with the Commerce Architecture. This generally means that your Commerce database is on the root filesystem (eek!) and using circular logging. There’s more than that you should change on build, don’t get me wrong.… Read the rest
Continue reading »This is a really complicated topic, largely because dbclean is such a varied tool, and because the data distribution in Commerce databases varries heavily based on how you use it. If you haven’t already, check out my blog entry on dbclean basics.… Read the rest
Continue reading »So I generally write my posts a day ahead and schedule them to be posted mid-morning when I think people would be around to see the tweets or other indications there’s a new post. But I was sick yesterday. So it probably looked to my employer like I was posting on my blog when I was too sick to work, but whatever – I actually schedule multiple days ahead when I get a writing bug.… Read the rest
Continue reading »UPDATE: An updated version of this post is available – Updated: 10 WebSphere Commerce Tables You Should Be Familiar With
So there are 800+ tables in the typical Commerce database – you’re never going to know them all. And getting a start on understanding the data model – even in the more limited way needed when you’re playing primarily the system dba role can be daunting.… Read the rest
Continue reading »This is part of a series focusing on the details of each item that needs to be pruned in a Commerce database.
Guest Users are created by Commerce in the database. Technically they are only needed for when you allow a customer to add items to their cart before logging in or registering, or for a few other actions.… Read the rest
Continue reading »Determining your backup strategy for a Commerce DB2 database is much like determining your backup strategy for any other db2 database. There really aren’t any special considerations for Commerce that you wouldn’t have for another database.
By Default, Commerce databases use Circular logging.… Read the rest
Continue reading »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.… Read the rest
Continue reading »So I thought I’d share the best thing I’ve seen out of IBM on Commerce DB2 information on the Commerce database. There are obviously things that aren’t in this presentation, but it’s decent for the time allotted and I learned stuff from it back when I listened to it live in August 2010.… Read the rest
Continue reading »Ok, so this is an issue I ran into recently. The Commerce guys were trying to install a Feature Pack, and got this:
SQL0569N Authorization ID "<authorization-name>" does not uniquely identify a user, a group or a role in the system.… Read the rest Continue reading »
I suspect there are some sites out there where a “set-it-and-forget-it” approach is taken for DB2 related performance. Many clients we go into don’t even realize the need for having a DBA. Depending on site size, that may work for a while.… Read the rest
Continue reading »I realized today that I haven’t done a post on the basics of stagingprop. All the pieces are there somewhere in the info center, and I love the info center once you’ve got the basics down, but I remember how confusing stagingprop was when I first started out, even though I had a major expert on the topic to ask questions of.… Read the rest
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