How to install Oracle EM 13c? It's the first time that I have a chance to install Oracle EM 13c. I remember last time I installed Oracle EM 12c. I have to install weblogic first. On OEM 13c, I don't need to do something like that. It installs WLS -18.104.22.168 , JDK – 1.7.0_80.
In this post, I installed Oracle EM 13c Silent mode with "SMALL" deployment. I assume, I installed (more...)
What is your resolution for learning? Learn Oracle, Learn Linux or both. It' s a good news for people who are interested in improving Oracle and Linux skills. Packt Promotional (discount of 50%) for eBooks & videos from today until 23rd Feb, 2016.
AWS EC2 API tools help too much for Amazon EC2 to register and launch instances, manipulate security groups, and more. Someone asked me to backup EC2 instance. I thought to use it for backup script. Anyway, No need to explain more how to install Amazon EC2 API tools on Ubuntu? Just say thank for EC2StartersGuide
. I fellow this link and installed it easily. Additional, I used this Link
for more idea about java.- Adding (more...)
Spread out news for people who are interested in reading IT books. The $5 eBook Bonanza is here!
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Everyone knows about Linux
. It's a popular operating system that is the software on a computer that enables applications and the computer operator to access the devices on the computer to perform desired functions.
You can read more on link what I pointed to it. For me, Linux is a great operating system that I can use it as Desktop and Server. I have used it over ten years. It's very interesting operation system. I have (more...)
How to become Become an Oracle Certified Associate?
That's a good question for some people who want to start working on Oracle Database and get first Oracle Certification for their work life. Step 1 - Pass one SQL Exam: Oracle Database 12c: SQL Fundamentals 1Z0-061 or Oracle Database 11g: SQL Fundamentals I 1Z0-051 or Oracle Database SQL Expert 1Z0-047. Step 2 - Pass Exam Oracle Database 12c: Installation and Administration 1Z0-062.
With Step 1 - Oracle (more...)
Lots of Python with data analysis books. This might be a good one that is able to help readers perform statistical analysis with programs written in Python. Think Stats, 2nd Edition Exploratory Data Analysis
by Allen B. Downey
This second edition of Think Stats includes the chapters from the first edition, many of them substantially revised, and new chapters on regression, time series analysis, survival analysis, and analytic methods. Additional, It uses (more...)
is open source and a query engine that runs on Apache Hadoop. With Impala, you can query data, whether stored in HDFS or Apache HBase – including SELECT, JOIN, and aggregate functions – in real time. If you are looking for a book getting start with it - Getting Started with Impala Interactive SQL for Apache Hadoop
by John Russell
). Assist readers to write, tune, and port SQL queries and other (more...)
started as a research project at UC Berkeley in the AMPLab, which focuses on big data analytics. Spark is an open source cluster computing platform designed to be fast and general-purpose for data analytics - It's both fast to run and write. Spark provides primitives for in-memory cluster computing: your job can load data into memory and query it repeatedly much quicker than with disk-based systems like Hadoop MapReduce. Users can write applications (more...)
Hadoop is an open-source software framework for storage and large-scale processing of data-sets on clusters of commodity hardware. How to deliver log to Hadoop HDFS. Apache Flume is open source to integrate with HDFS, HBASE and it's a good choice to implement for log data real-time collection from front end or log data system. Apache Flume
is a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log data.It uses (more...)
Good day for learning something new. After read Flume book, that something popped up in my head. Wanted to test "rsyslog" => Flume => HDFS. As we know, forwarding log to other systems. We can set rsyslog:
*.* @YOURSERVERADDRESS:YOURSERVERPORT ## for UDPFor rsyslog:
*.* @@YOURSERVERADDRESS:YOURSERVERPORT ## for TCP
[root@centos01 ~]# grep centos /etc/rsyslog.conf
Came back to Flume, I used Simple Example
for reference and changed a bit. Because (more...)
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As I have worked in server-side a long time as System Administrator. I must spend with logs. To use it for checking and investigation in issue. As some policies in some Companies, they want to keep logs over year or over ten years. So, it is not unusual to find out idea to store, integrate logs and do something.
A book tittle "I Heart Logs - Event Data, Stream Processing, and Data Integration"
Not Often, I checked about my space after made filesystem on Linux. Today, I have made Ext4 filesystem around 460GB, I found it 437GB only. Some path should be 50GB, but it was available only 47GB.
Thank You @OracleAlchemist
for good information about it.
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup0-U01LV 50G 52M 47G 1% /u01
Reference - (more...)
It was a quiet day, I worked as System Administrator and installed Oracle Linux on Virtual Machine guest. After installed Operating System, I wanted to extend disk on guest. So, I extended disk on guest. Anyway, I came back in my head what I was supposed to do on Linux then ?
- Create new disk (and Physical Volume) and then add in Volume Group.
Checked my partition:
My time has used much with Linux. Some people asked to move from CentOS to Oracle Linux somehow. I used to believe it easy to do like that. Anyway, It'd better to test.
I focused on 2 links.https://linux.oracle.com/switch/centos/http://docs.oracle.com/cd/E37670_01/E37355/html/ol_switch_yum.html
Oracle introduces centos2ol.sh script that can convert CentOS 5 and 6 systems to Oracle Linux. After that run "yum upgrade"
[root@test-centos ~]# uname -r
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...)