Learn a bit Oracle Scheduler with BROKEN state

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 column.

STATEVARCHAR2(15)Current state of the job:
  • DISABLED
  • RETRY SCHEDULED
  • SCHEDULED
  • RUNNING
  • COMPLETED
  • BROKEN
  • FAILED
  • REMOTE
  • SUCCEEDED
  • CHAIN_STALLED

When does Oracle Scheduler change STATE to be BROKEN?
Then, (more...)

Java Performance: The Definitive Guide By Scott Oaks

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...)

Programming Elastic MapReduce Using AWS Services to Build an End-to-End Application

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...)

Multitenant Self-Service Provisioning – BETA 2 – No emails out for ADMIN user

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). (more...)

Multitenant Self-Service Provisioning – BETA 2 – Connect SQL Developer with pdb_admin

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
Connected.
SQL> alter (more...)

Multitenant Self-Service Provisioning – BETA 2 – Role

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...)

Multitenant Self-Service Provisioning – BETA 2 – Started to play

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 From Strategic Planning to Enterprise Integration with Tools, Techniques, NoSQL, and Graph

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...)

ZooKeeper Distributed Process Coordination By Flavio Junqueira, Benjamin Reed

Apache ZooKeeper 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...)

Learned – Data Science Boot Camp: Acquiring and Transforming Big Data

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...)

Learned a bit – ACCUMULO – set classpath in accumulo-site.xml

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 -:)
  <property>
    <name>general.classpaths</name>
    <!--
       Add the following for hadoop-2.0
       $HADOOP_PREFIX/share/hadoop/common/.*.jar,
       $HADOOP_PREFIX/share/hadoop/common/lib/.*.jar,
       $HADOOP_PREFIX/share/hadoop/hdfs/. (more...)

Learned a bit – ACCUMULO – generate_monitor_certificate.sh

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?
(more...)