Virtual desktop infrastructure (VDI)
is the practice of hosting a desktop operating system within a virtual machine (VM) running on a centralized server. VDI is a variation on the client/server computing model, sometimes referred to as server-based computing.
VDI is the new technology that gives lots of benefits.
• Efficient use of CPU and memory resources
• Reduced desktop downtime and increased availability
• Patches and upgrades performed in data center
• New users can (more...)
- Today, it's not only developers, system administrators or organizations have use the Open Source. Businesses have established to use the Open Source as well. So, you can not ignore about Open Source. At OSCON, you'll encounter the open source ecosystem. It helps digging deep into the business of open source.
Five Reasons to Attend OSCON: Get straight to the epicenter of all things open source and get better at what you do, Learn from (more...)
focused on the intersection of software and hardware. It's great community with Software and Hardware. Audiences will be able to learn new idea to combine software and hardware. It gathered idea from engineers, researchers, roboticists, artists, founders of startups, and innovators.
Oreilly launched HD videos (Solid Conference San Francisco 2014: Complete Video Compilation Experience the revolution at the intersection of hardware and software—and imagine the future
) for this conference. Video files (more...)
Assessing overall security on a new system before it goes on-line is also a good idea. It's useful to find holes before somebody else does, verify secure configurations and testing. Penetration Testing
is the process of attempting to gain access to resources without knowledge of credentials and find security weaknesses (Interesting paper
).Penetration Testing A Hands-On Introduction to Hacking
By Georgia Weidman
. A book was written about the basic of Penetration (more...)
The Art of War
is an ancient Chinese military treatise attributed to Sun Tzu
, a high-ranking military general, strategist and tactician. A lot of books have written by using Sun Tzu's ancient The Art of War and adaptation for military, political, and business.The Art of War for Small Business Defeat the Competition and Dominate the Market with the Masterful Strategies of Sun Tzu
, this is a book was applied the Art of War for (more...)
It's time to learn more about Python. I found "Intermediate Python Practical Techniques for Deeper Skill Development" video course by Python expert Steve Holden.
It's very useful for Python video learning, but users should have basic about Python. They must install ipython.
Note start ipython by " ipython notebook" command and users can check how to install ipython?
and users should download example codes at https://github.com/DevTeam-TheOpenBastion/int-py-note
This video course gaves deeply Python learning (more...)
is programming language, that supports object-oriented, imperative and functional programming. The key is its simplicity, easy language to learn and easy moving code from development to production more quickly. It's power tool to use with Big Data. So, I believe it's a good time to learn about Python programming language.
You can find many resources about it on the Internet. I started to learn about Python by watching "Introduction to Python
" By Jessica McKellar. (more...)
Last post, I blog about Oracle Linux Beta 1
that I would like to learn more after it has changed to use Systemd targets
. In this post, I just wanted to update for some people who have installed Oracle Linux 7 Beta 1 or have been testing it. On Oracle Linux Beta 1, that uses openssl version (openssl-1.0.1e-23.el7) and it's issue about CVE-2014-0160
. Users can go Oracle Linux Early Access Downloads
and download (more...)
It might be too late posting about Oracle Linux 7 (Beta 1). Just came back from long holidays in Thailand. I think it's very interesting to learn something new in OL7. Users can download it by using OTN account.Download
After installed it, I tested some a little bit.
[root@ol7beta ~]# cat /etc/oracle-release
Oracle Linux Everything release 7.0 Beta
[root@ol7beta ~]# uname -r
Users can choose to (more...)
I got email about MapR Sandbox
, that is a fully functional Hadoop cluster running on a virtual machine (CentOS 6.5) that provides an intuitive web interface for both developers and administrators to get started with Hadoop. I belief it's a good idea to learn about Hadoop and its ecosystem. Users can download for VMware VM or VirtualBox. I downloaded for VirtualBox and imported it. I changed about network to use "Bridged Adapter". After started... (more...)
is a programming language and computing platform. There are lots of applications and websites have used it. About latest Java version, Java 8. Oracle announced Java 8
on March 25, 2014. I mention a book title - Java CookbookJava Cookbook
by Ian F. Darwin
and this book covers Java 8.
It isn't a book for someone who is new (Readers should know a bit about syntax to write Java) in Java, but It is (more...)
PL/SQL is procedural language, that's very useful when you work with Oracle Database. As DBA, you might have to write PL/SQL to do some tasks. Developer on Oracle Database must know about PL/SQL.
This post I mention a book title - Oracle PL/SQL Programming
by Steven Feuerstein (@stevefeuerstein
), Bill Pribyl
. This book is a new edition that covers PL/SQL on Oracle Database 12c. Readers can use examples in a book for practice and get (more...)
My friend asked me to check about error in alert log file - "dispatcher 'D000' encountered error getting listening address
". After checked, I found.
Wed Feb 12 09:46:27 2014
dispatcher 'D000' encountered error getting listening address
Wed Feb 12 09:46:27 2014
found dead dispatcher 'D000', pid = (17, 154)
I checked trace file about d000 processed.
Trace file /u01/app/oracle/diag/rdbms/prod/PROD/trace/PROD_d000_31988.trc
Oracle Database 11g Release 220.127.116.11.0 - 64bit Production
On Oracle Database, DBAs can check broken job for Oracle Job (dbms_job) at *_JOBS.BROKEN column. Anyway, DBAs have changed from DBMS_JOB to DBMS_SCHEDULER. So, I was curious How to check broken job for Oracle Scheduler (DBMS_SCHEDULER)?
After found out... DBAs can check on *_SCHEDULER_JOBS.STATE
|Current state of the job:|
When does Oracle Scheduler change STATE to be BROKEN?
Java is a programming language and computing platform. You will see lots of applications and websites that are written in Java. Java is fast, secure and reliable. How about performance? Java performance is a matter of concern because lots of business software has been written in Java.
I mention a book titles - Java Performance: The Definitive Guide
By Scott Oaks
. Readers will learn about the world of Java performance. It will help readers (more...)
Amazon Elastic MapReduce
(Amazon EMR) is a web service that makes it easy to quickly and cost-effectively process vast amounts of data. Amazon EMR uses Hadoop, an open source framework, to distribute your data and processing across a resizable cluster of Amazon EC2 instances.
Anyway, You are looking for a book (more...)
What did I mean? Actually, I thought how to rename "ADMIN" user?or How to rename "Email Address" on Multitenant Self-Service Provisioning? Why I interested in it?
I created New Database by using "ADMIN" user.
I didn't get email about credentials (Because no email address for ADMIN user
I didn't write about setting SQL Developer to connect PDB. I just tested connection by using SQL Developer with pdb_admin. As you know - The PDB_ADMIN user in newly created PDBs has SYSDBA system privilege so it can fully manage the PDB.
SQL> conn / as sysdba
SQL> alter (more...)