Database Administration & Monitoring

The scripts of my DOAG 2015 session: Automated GI/RAC staging with Cobbler and VirtualBox

I promised to upload the scripts of my session to our blog. So, here they are: create_12102_gi_rac_project.sh: This one creates the 12.1.0.2 GI/RAC project on the cobbler server finish_ora_12102_gi_rac_project.sh: This one does the configuration of the GI/RAC on(…)

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.

Instance fails to start automatically

Recently at a customer I was confronted with a problem of restarting the Oracle Database 12c automatically on a Windows Server 2008 R2 x64. I installed Oracle 12.1.0.1.0 with a user of service in a domain who has member(…)

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(…)

Oracle DBA Essentials Workshop – Patchset 11.2.0.4 Available

We have Upgrade our Environment Oracle DBA Essentials Workshop of release 11.2.0.3 to 11.2.0.4. From now on, you can operates the various subjects on the new release. In this article, I present you the procedure to be followed for(…)

GoldenGate – Error during a register extract

This week, I tried to install a GoldenGate environment to make some test. The installation was good and simple. Firstly I tested the normal capture mode and all worked correctly. In a second time, I wanted try to use the(…)

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(…)