Operating systems

Automate OVM deployment for a production ready Oracle RAC 12.2 architecture – (part 01)

After having worked with OVM on various architectures I can say that it is a good technology to easily build virtualized environments for production applications. Because it is based on XEN and has simple ways to deal with existing storage(…)

Oracle Linux 7 – How to audit changes to a trusted file such as /etc/passwd or /etc/shadow

Linux auditing is quite powerful and a lot of different use cases might be handled via the auditing framework. However, in this blog I would like to show you, how to audit changes on trusted files, like /etc/passwd or /etc/shadow.

ODA – 32GB template but got a database with 16GB SGA???

I got an interesting question today from a customer which created a database on ODA. He selected the template odb-04 which shows 32GB Memory but got a database with a 16GB SGA… Is it due to the PGA size, a(…)

OEL 7 – How to disable IPv6 on Oracle Linux 7 – Follow Up

By William Sescu This is a follow up to the Blog were I explained how to disable IPv6 on Oracle Linux 7. If you have done all the steps which I have explained here http://dbi-services.com/blog/oel-7-how-to-disable-ipv6-on-oracle-linux-7/  then you have already(…)

Linux – Securing your important files with XFS extendend attributes

By William Sescu Let’s say, the tnsnames.ora is a quite important file on your system, and you want to make sure that you notice when someone changes the file. Taking a look at the modification time of that file would(…)

vagrant up – get your Oracle infrastructure up an running

By using Vagrant to manage your Virtual Machines and Ansible for configuration management and provisioning you can easily automate the setup of your whole test environment in a standardized way. If you have never heard about Ansible and Vagrant(…)

Dealing with WSFC 2016 quarantine state and availability groups

I was playing with my lab environment which includes Windows 2016 and SQL Server 2016 and I noticed an interesting scenario while testing cluster node failures. After simulating some network outage scenarios, I was not able to(…)

OEL 7 – Project Quotas on Oracle Homes with XFS on Oracle Linux 7

By William Sescu User and group quotas do exist for quite a while for all kind of file systems, like ext4 or vxfs and maybe many others. However, for my use case, I do need quotas for different directories on(…)

OEL 7 – How to disable IPv6 on Oracle Linux 7

By William Sescu In case you are not interested in IPv6, you can use the following HowTo to disable it on Oracle Linux 7. Unless you have something very very special on your System, these 10 Steps should do it.

Manage Azure in PowerShell (RM)

Azure offers two deployment models for cloud components: Resource Manager (RM) and Classic deployment model. Newer and more easier to manage, Microsoft recommends to use the Resource Manager. Even if these two models can exist at(…)