Shrink ASM Diskgroup and Exadata Grid Disks

Here I will cover the shrink of ASM diskgroup in Exadata environment running VM’s. The process here is the opposite of what I wrote in the previous post, but have a tricky part that demands attention to avoid errors. The same points that you checked for extending are valid now: number the cells, disks per cell, ASM mirroring, and the VM that you want to change continue to be important, but we have more now. Besides that, the post shows how to verify if you have something in the ASM internal extent map that can block the shrink and “fix” this.

ODA, JSON and Flash

Recently, in March, I made the reimage from an X5-2 HA ODA and saw a strange behavior during the diskgroup creation and couldn’t reproduce (because involve reimaging again). Basically, the FLASH diskgroup was not created.
But in last May I reimaged another ODA using the same patch/imageversion (18.3.0.0 – Patch 27604623) and was possible to verify again. In both cases, I created the appliance using the CLI “odacli create-appliance” using JSON file because the network uses VLAN (what it is impossible to create using the web interface), and both appliances are identical (X5-2 HA with SSD for RECO and FLASH).
To reimage, I followed the steps in the docs for this version and used the ISO to do the baremetal procedure. If you look in the docs about the options for storage (check here) you can see that there is no single reference to use FLASH diskgroup (or that you need to do that). Checking in the readme/reference JSON files that exist in the folder “/opt/oracle/dcs/sample” under file “sample-oda-ha-json-readme.txt”:

ODA, ACFS and ASM Dilemma

As you know, for ODA, you have two options for storage: ACFS or ASM. If you choose ACFS, you can create all versions for databases, from 11g to 18c (until this moment). But if you choose ASM, the 11g will not be compatible.
So, ASM or ACFS? If you choose ACFS, the diskgroup where ACFS runs will be sliced and you have one mount point for each database. If you have, as an example, one system with more than 30 databases, can be complicated to manage all the ACFS mount points. So, ASM it simple and easier solution to sustain. Besides the fact that it is more homogeneous with other database environments (Exadata, RAC’s …etc).
If you choose ASM you can’t use 11g versions or avoid the ACFS mount points for all databases, but you can do a little simple approach to use 11g databases and still use ASM for others. Took one example where just 3 or 4 databases will run over 11g version and all others 30 databases in the environment will be in 12/18. To achieve that, the option, in this case, is using a “manual” ACFS mount point, I will explain.

Cloud … is only the Beginning

Enterprises in the 21st Century face a dramatic change in the expectations of their customers. These expectations, for new services, products, heightened privacy, and advanced interactions are driving organizations to change both quickly and radically. Responding to this intense demand requires a change to the technology organizations use to deliver an evolved offering to a more discerning and demanding consumer.

Managing the Customer Experience

Conventional business strategies are being challenged by emerging companies, designed solely as digital businesses. These agile companies have created new markets by solving familiar pain points and are destabilizing industry giants, driving a wedge between those businesses and their customers. At the same time, customers have become more demanding and set new service standards, much different from those of 20 years ago. On the occasion of eProseed TechForum, Tanguy Petre, CEO of iMendos, showed the participants how to improve business results through effective Customer Experience Management.

Oracle IDCS: A Hybrid Identity Cloud Platform at Work

Oracle’s Access Management platform provides innovative services that complement traditional access management capabilities. In particular, it can be easily integrated with the Oracle Identity Cloud Service to support hybrid access management capabilities that can help customers seamlessly protect on-premise and cloud applications and workloads. This is what Ronald van Luttikhuizen, Oracle ACE Director & eProseed Partner and Fabien Henriet, Technical Director at eProseed, showed the participants to the first edition of eProceed’s TechForum.

eProseedRTC co-organizer of the first RegTech Summit in Luxembourg

eProseedRTC will co-organize the first edition of the RegTech Summit to be held in Luxembourg on October 12, 2017. The summit will explore this developing area that is already having a tangible impact on regulatory compliance. All the evidence suggests that RegTech will disrupt the regulatory landscape by providing technologically advanced solutions to the ever-increasing demands for compliance with regulatory obligations and industry standards.