Oracle

Trying AppDynamix – monitoring application from user to database

By Franck Pachot . I like to come upon new monitoring software that help to go quickly from user response time to root cause. And I love applications that can be installed easily and at which I can give a(…)

Real life audience vs. Twitter audience

By Franck Pachot . I was looking at twitter analytics showing my top tweets in November and that puzzled me because tweets with the most 'impressions' and 'engagement' are related to events that had low audience in real. Any comment(…)

In-Memory synchronous population with hidden parameters

By Franck Pachot . By default, In-Memory Column Store population is done in background, asynchronously. There are two hidden parameters that can change this behavior, let's see how it works.

Cloud Control 12c on your laptop

By Franck Pachot . Today every DBA should have a lab on his laptop. This is where I reproduce most of cases before opening a SR, or to investigate something, to demo, to learn new features, or to prepare an(…)

Interested in a deep dive of logical replication?

By Franck Pachot . It's next week at #DOAG2015 Interested in a deep dive of logical replication? Let's try it. The best way to learn is to try it and this is the idea of #RepAttack where you can quickly(…)

set “_rowsets_enabled”=false

By Franck Pachot . This 12c 'wrong results' issue is thoroughly described by Mike Dietrich (https://blogs.oracle.com/UPGRADE/entry/switch_off_rowsets_enabled_in) and I've nothing to add. This blog post is there to be used as a reference for the comment in(…)

AWR when ASH CPU >> DB CPU

By Franck Pachot . I'll present How to read an AWR report next month at UKOUG TECH15 and the first recommendation after checking Average Active Sessions is to verify that we are not in a CPU starvation situation. Here is(…)

RMAN channels in RAC

By Franck Pachot . When you want to minimize the backup or restore duration, you can parallelize RMAN operations by allocating multiple channels. If you are in cluster, you can open channels from several nodes. Let's see why, how, and(…)

Dbvisit replicate allows DDL replication even when source and destination have different structure

By Franck Pachot . I've tested a little thing for a customer, and as usual I spool the result into a blog post in case it helps others. Not all replication software - at least in their current version -(…)

IBM Bluemix Database Cloud Service – My first trial

By Franck Pachot . Remember my first try of Oracle cloud when Larry Ellison announced the Cloud in june? This week at OOW15 Larry Ellison announced that IBM is not a competitor anymore for them, then(…)