Re: Oracle DBA to PostGreSQL DBA?

From: Tim Gorman <>
Date: Fri, 16 Dec 2016 10:09:16 -0700
Message-ID: <>

Bear in mind that the "cloud" has three layers: IaaS, PaaS, and SaaS.

SaaS (software as a service) involves complete IT solutions (i.e. Salesforce, Google Calendar, NetSuite, etc), so it means the elimination of most IT roles.

PaaS (platform as a service) basically means tools like databases, with AWS RDS as a classic example. With PaaS migration, the cloud company is supporting a limited set of database choices, and companies are developing solutions with those tools.

IaaS (infrastructure as a service) basically means "servers" and "storage", with AWS EC2 and S3 being classic examples, respectively. With IaaS, the SysAdmin role along with the datacenter has largely been eliminated, and DBAs, developers, and application admins are allocating virtual machines in IaaS. Migrating to IaaS is largely no different than migrating to different servers. The major gotcha is the OS platform, as most IaaS vendors only support x86 servers running Linux and Windows. Solaris, AIX, and HP-UX are largely supported only be vendor IaaS offerings, and they will soon be extinct. With IaaS migration, databases and applications are not "supported" by the cloud company unless such a service is purchased additionally.

So while "most companies" are indeed migrating to the "cloud", sometimes

they are migrating to IaaS (a.k.a. someone else's servers), sometimes 
they are migrating to PaaS (a.k.a. someone else's tools), and sometimes 
they are migrating to SaaS (i.e. someone else's IT department).

The driving factor isn't necessarily lower cost, but more agility. As such, production systems are certain to migrate last, but non-production environments are certain to migrate first into what is called "hybrid data center".

Understand which choice your company is making, and plan accordingly.

If someone says "my company isn't migrating to the cloud", then someone is swimming in de Nile.

On 12/16/16 09:44, Mike Killough wrote:
> That's a good point. I think that once there are no more premises
> databases, I will hit the retirement finish line anyway.
> Mike
> ------------------------------------------------------------------------
> *From:* Dennis Williams <>
> *Sent:* Friday, December 16, 2016 10:39 AM
> *To:*
> *Cc:*; oracle-l-freelists
> *Subject:* Re: Oracle DBA to PostGreSQL DBA?
> All - I just saw an article stating that most companies are migrating
> to the cloud, so using the databases easily available and supported by
> the cloud company.
> Dennis Williams

Received on Fri Dec 16 2016 - 18:09:16 CET

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