Link to the Marketplace...
Link to the Marketplace...
While typing some text, the touchpad signalled the mouse some strange moves. Sometimes it marked parts of the text and the next key erased the highlighted text...
First idea was to edit the xorg.conf or something else, but i found a less difficult was via touchpad-indicator.
It can be installed via
apt-get install touchpad-indicatorAlittle problem is, that you can not run it via cli (more...)
Last week we have released Oracle OpenStack for Oracle Linux Release 3.0, based on upstream Mitaka, you can read about the details of this announcement in our Oracle OpenStack blog.
We have recorded a short "An Introduction to Oracle OpenStack for Oracle Linux 3" podcast that gives a snapshot of the announcement.
You are also welcomed to watch "Easy Deployment of Oracle Applications and Database with OpenStack" webcast (on demand) that (more...)
Actually, this is a follow up post from my performance deep dive into tablespace encryption. After having investigated how tablespace encryption works, this blogpost is looking at the other encryption option, column encryption. A conclusion that can be shared upfront is that despite they basically perform the same function, the implementation and performance consequences are quite different.
Column encryption gives you the ability to choose to encrypt per individual column, that’s kind of obvious. However, (more...)
This is a run through of a performance investigation into Oracle tablespace encryption. These are the versions this test was performed on:
$ cat /etc/oracle-release Oracle Linux Server release 6.8 $ /u01/app/oracle/product/184.108.40.206/dbhome_1/OPatch/opatch lspatches 24315824;Database PSU 220.127.116.11.161018, Oracle JavaVM Component (OCT2016) 24006101;Database Patch Set Update : 18.104.22.168.161018 (24006101)
In this test I created an encrypted tablespace:
SQL> create tablespace is_encrypted datafile size 10m autoextend (more...)
It was not easy this year to concentrate on the sessions because of the hottest march of the last 100 years. But the quality of the sessions beats the weather. Maybe again my invest in reading the abstracts and filter the sessions before the conference has payed off.
Day 1 Conference
In preparation for an upcoming talk about Oracle 12.2 I am planning on getting my feet wet with the Oracle 12.2 Sharding option. It seems to be a very interesting subject to get into, but like all new subjects, they can be intimidating at first due to their complexity. So why not use the instructions someone has already written down?
While working with a programming example for my students, I ran into an interesting run-time error when I changed their approach to importing Python’s
random module. Here’s the raised error message:
Traceback (most recent call last): File "windowBouncingBalls.py", line 84, in
speed = [choice([-2,2]), choice([-2,2])] NameError: name 'choice' is not defined
You raise the missing
choice identifier when two things occur. The first thing requires you to use a standard
import statement, like the (more...)
The PyGame library is a wonderful tool for building games with Python. It lets you accomplish a great deal by simply managing events. You need to understand how to use Python functions, modules, and events to build games with this Python library.
You can download and install the PyGame library with the yum utility like this:
yum install -y pygame
It should generate the following list when you install it as the
Some good reasons to use VS Code:
Happy Monday to all Linux fans. Today we would like to highlight an updated whitepaper available here. This whitepaper describes the comprehensive Oracle Linux management capabilities available in Oracle Enterprise Manager and has been updated for the latest version of Oracle Enterprise Manager 13c.
Oracle Enterprise Manager 13c enables customers to have complete visibility into
Result! I have finally been able to gather a complete RDA (Oracle Remote Diagnostic Agent) output on my 2 node RAC system. After consulting the relevant documentation on MOS-which is spread over at least 42 Doc IDs-I found them not to be very helpful to the degree that some of what I read is actually wrong or contradicting. I put together a short note, primarily to myself, to remind me of the process. I hope you find it useful, (more...)
Happy Monday to all Linux fans,
Have you visited Oracle Linux website lately? We made some changes which will make it easier for you to navigate to download page or buy support from Oracle Store. We also implemented chat if you have any questions before you download of purchase from store.
Bookmark our page and visit often for whitepapers, webinars and any other resources you may need.
... Have Fun, Build Things People Will Use..
In a recent Forbes article, Wim Coekaerts, SVP, Linux and Virtualization Engineering talks about what makes him happy.
In his long career, he’s found joy working on early database appliances, and later guiding Oracle’s effort to make Linux, the open source operating system he’d played with since his school days in Belgium, its OS of record. Now, “Linux has become the operating system of the (more...)
After the baseline has been established in the first part of this series it’s time to measure the effect of the network in this part. The second test will introduce an interesting feature: Using Linux’s own Traffic Shaper/Quality of Services module I will add a delay of 100ms to the Data Guard network interface card (NIC) to slow things down a little.
WARNING: this is of course a lab or VM-only situation. I can’t (more...)
When sifting through a sql_trace file from Oracle version 12.2, I noticed a new wait event: ‘PGA memory operation’:
WAIT #0x7ff225353470: nam='PGA memory operation' ela= 16 p1=131072 p2=0 p3=0 obj#=484 tim=15648003957
The current documentation has no description for it. Let’s see what V$EVENT_NAME says:
SQL> select event#, name, parameter1, parameter2, parameter3, wait_class 2 from v$event_name where name = 'PGA memory operation'; EVENT# NAME PARAMETER1 PARAMETER2 PARAMETER3 WAIT_CLASS ------ ------------------------------------- ---------- ---------- ---------- --------------- 524 (more...)
Happy Monday to all Linux fans, this week we would like to highlight some of the online events that we are running in our Asia Pacific region. You can also watch the on-demand webinar at a time suitable in your calendar but don't forget to register to upcoming events if you are in that region or prefer the evening webinar in North America. These are live events that you can ask questions and provide comments (more...)
I may have said it before but I consider presenting and teaching a great way to expand one’s knowledge: first of all it requires me to really understand a subject. Secondly, when presenting, you get lots of interesting questions that can turn into blog posts like this one.
Lately I have been asked about the impact of synchronous log shipping to a physical standby database. I was sure there was an effect to be observed, (more...)