• DBA Life - Oracle

    2016 DBAKevlar Year in Review

    How was 2016 for me? It was a surprisingly busy year-  blogging, speaking, working and doing. I posted just under 100 posts to my blog this year.  After I changed jobs, the “3 per week” quickly declined to “4 per month” after I was inundated with new challenges and the Delphix learning curve.  That will change for 2017, along with some new initiatives that are in the works, so stay tuned. For 2016, the most popular posts and pages for my website followed a similar trend from the last year.  My emulator for RPI is still a popular item and…

  • Raspberry Pi

    Raspberry Pi- Common Configuration Issues

    The following issues in this post are common challenges experienced by Raspberry Pi, (RPI) owners and I’m consistently frustrated with the ridiculous answers out on the internet for them!  No fear, trusty Raspains!  I’m here to offer you the correct and [pretty easy] answers that will actually fix the problems and won’t lead you to searching for hours on the internet. We techies know that no matter what, going back to the configuration at the OS, (operating system) level is just the best way to fix problems.  Raspberry Pi issues are no different, so read on… Keyboard Set To A Different Language If…

  • Raspberry Pi

    GPIOZero on Non-Zero Raspberry Pi

    So there are some cool features that are built into the GPIOZero library/module.  One of the challenges I think many of us that have a lot of projects that we want to work on, is that we end up having to translate it to the version of RPI that we just happen to be working on or have available.  This can be frustrating when the code is available without us having to rewrite it all in the libraries available for the hardware we just happen to plug-in. So GPIO the old way with photocells is a bit involved: GPIO.setmode(GPIO.BCM)  def…

  • Raspberry Pi

    Adding a Database to the Raspberry Pi Zero

    This morning, after someone added SQL Developer to a Raspberry Pi 3, Jeff Smith pinged me and the question was posed, as it often is, can you run Oracle database server on a Raspberry Pi, (RPI)? The answer is no, you can’t, as there are no binaries for the ARM processor platform that you can compile, so its nothing to do with power, (although it is low powered for a very good reason…) but really due to the processor type.  Hopefully that’ll stop those of you building out massive RPI clusters in hopes of creating their own home servers with…

  • Raspberry Pi

    Raspberry Pi Version 2 Wifi Inconsistent Connectivity

    I’d had some difficulty with WiFi consistently staying connected on each of my Raspberry Pi units.  I’d had a little time to look into it, but no research had offered an answer and the only fixes I’d come up with was a shell script I wrote to force a restart of the NIC, which helped some, but no improvement when I added an antenna, (I considered all the wires, sensors, etc. might be interfering with the signal.) Finally this weekend, started to dig around and noted that although in the user interface, it showed both connections to my home WiFi and…

  • Raspberry Pi

    Adding Music to Code On Your Raspberry Pi

    So as I prepare for next week, coaching with some other great folks with the Oracle Education Foundation using the Raspberry Pi, I wanted to add some fun music into my code to work with our motor mascot project.  To do so, you need a few things:  A small speaker with a 3.5 plugin to the Raspberry Pi.  I have a small, round, rechargeable one that I love. Have an FM radio station that streams music that you can use in your code. Install and use music libraries If you haven’t done so recently, run an update on your Rpi: sudo…