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 18.104.22.168.0 - 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...)
Last post, I posted about Oracle Multitenant Self-Service Provisioning - BETA 2
and read more about what changes have been made in this Beta 2 release.
Users with the PDBA role in the Oracle Multitenant Self-Service Provisioning application can only view PDBs that they created or have been made an (more...)
Got news on tweeter about Multitenant Self-Service Provisioning - BETA 2
. It's very interesting. You will find something change. For example On Oracle Multitenant Self Service Provisioning - BETA 1 runs in APEX pdb
(Downloaded pdbss_1030.zip and installed)This version, the Oracle Multitenant Self-Service Provisioning application now runs in (more...)
Big Data Analytics
is the process of examining large amounts of data of a variety of types (big data) to uncover hidden patterns, unknown correlations and other useful information. It's helpful with companies to make better business decisions.What is Big Data Analytics?Big Data Analytics From Strategic Planning to (more...)
is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications.
Why you have to learn about Zookeeper? If you are using application as Hbase, Neo4j, Solr, (more...)
Found Video Lecture Series: Data Science Boot Camp
. It's very great for learning. I hope readers will get benefit from it. I learned a bit about it Today and downloaded Example Code to play. Lesson 1: I learned to use Flume Agent and read data by Hive.
Terminal 1: run (more...)
Thank You for comment on my post - Learned a bit - ACCUMULO
. So, I modified "<name>general.classpaths</name>"
in conf/accumulo-site.xml file. It works -:)
Add the following for hadoop-2.0
After learned a bit - ACCUMULO
. I could monitor by http://localhost:50095/status
. How to use HTTPS?
It's very easy - Create Certificate and Modify accumulo-site.xml file.Example:
[root@centos01 bin]# ./generate_monitor_certificate.sh
What is your first and last name?
[Unknown]: Surachart Opun
What is the name of your organizational unit?
The NSA started building Accumulo in 2008 and used the Google Big Table architecture as a starting point. Accumulo
is NoSQL database that is a simple key/value data store. BTW, Accumulo joined the Apache community in 2011.
Why Accululo is interesting? Security! It's developed from the BigTable data model and (more...)
Today. I have installed Hadoop distribution from Bigtop 0.6.0 on CentOS 6
. It's very cool and easy for installation. After installation, I had a chance to read a bit about Apache Accumulo
, it's a highly scalable structured store based on Google's Big Table. Accumulo is written in (more...)