OpenVMS Notes: Linux

  1. The information presented here is intended for educational use by qualified computer technologists.
  2. The information presented here is provided free of charge, as-is, with no warranty of any kind.
Edit: 2019-02-06 (split this page into five)

Introduction (Linux on an OpenVMS information page?)


Okay so everyone reading this already knows that OpenVMS is an operating system that competes with Unix and Linux so why did I include this topic as part of OpenVMS Notes?


  1. We were running MariaDB-5.5-25 on OpenVMS and where experiencing shutdown-related problems associated with very large databases using the XtraDB Engine (which masquerades as the InnoDB Engine). Many self-support blogs claim these issues can be fixed by upgrading to MariaDB-10 which is not (yet) available on OpenVMS. So setting up a nearby Linux box with MariaDB-10.1-19 on it would allow us to verify if the problem was fixed
    note-1: we only intended to test "MariaDB-10 on Linux" from our OpenVMS business system. All you need to do is modify the client connect strings on the OpenVMS side to send requests to the Linux box via a private network. We opted to use an OpenVMS "logical name". Easy-peasy!
    note-2: our test results were so impressive that we never went back. Our primary business system still runs OpenVMS but now relies upon a MariaDB database hosted by a Linux platform. IMHO this heterogeneous solution is not much different from running an OpenVMS which depends upon a SAN (storage area network) or NAS (network attached storage)
  2. Computer industry know-it-alls assert that every computer professional should be familiar with at least five computer languages and/or scripting environments. A similar case could be made for familiarity with 3-4-5 operating systems. These additional skills should translate directly into increased job security and employability (Happy Wife = Happy Life).
  3. Linux is the fastest growing computer ecosystem with 50% of all the computer systems on the planet are already running some sort of Linux. Got an Android phone? Android is a stripped-down version of Linux.

OpenVMS-Linux System Hybrid (heterogeneous computing)

as of 2017.01.xx

as of 2018-08-xx

		+-------------------------+	+--------------------------+
		| server : HPE rx2800-i2  |	| server : HP DL385p-gen8  |
		| OS     : OpenVMS-8.4    |	| OS     : CentOS-7        |
		| client : MariaDB-5.5-60 |	! server : MariaDB-10.3.11 |
		| net-1  : TCP/IP         +-----+ net-1  : TCP/IP          |
 private  ------+ net-2  : TCP/IP         |	+--------------------------+
 intranet	| net-3  : DECnet         +---> hub to other OpenVMS systems
		| net-4  : DECnet         +---> Windows-7 PC (host for offsite backups) 

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Neil Rieck
Kitchener - Waterloo - Cambridge, Ontario, Canada.