Training Icon (1)

1
Oracle DBA database administration and RAC
real applications clusters
2
Oracle DBA involves the designing, enforcing, and
maintaining an Oracle database system.0Oracle
has marked it place at the worlds pioneers in
database administration. Think database, you
think Oracle. They are the pioneers in managing
database. Oracle has made managing database
synonym with the word cool!
3
Oracle specialises in the development and
marketing of computer hardware systems as well as
enterprise software products, especially its own
brands of database management systems. Oracle is
the second-largest software maker by revenue,
after Microsoft! Making a note of this fact
could be of great significance, because it opens
up great job possibilities for students and
professionals who specialise in the different
products of Oracle. Honing ones skills in one or
many disciplines of the products that Oracle
offers would definitely pay dividends. Oracle
online training would be the first step towards
that direction.
4
Oracle is the other word for database. Think
database, you think Oracle. They are the
pioneers in managing database. Oracle has made
managing database synonym with the word cool!
5
Lets get an overviewSo what exactly is a
database? Well, a database is a structured
compilation of data. This data could be text,
pictures, programs, or anything that can be
stored on a computer in binary form. A
relational database stores the data in the form
of tables and columns. A table is the category of
data like employee, employee id, etc., and the
columns are information about the category, like
name or address. There would be almost no
company out there that would do without Oracle
database since it is the safest and the best way
of managing database. Hence, there is no
surprise for the surge to learn Oracle,
especially Oracle online training and Oracle DBA
training online for Oracle certification. Oracle
certification carries a great weight to the
curriculum vitae of aspiring software
professionals who plan to make an entry in the IT
world.
6
There are some databases that have nominal
feature sets and only store data, while there are
others that include programming languages,
utilities, and facilities to maintain
enterprise-level applications like ERP and data
warehousing. In a nutshell, Oracle is the 1
database. Oracle has the most advanced feature
set. In this day and age with travel limitations,
learning Oracle DBA training online and other
Oracle tools through Oracle online training is
the best way to go, and as reiterated above,
Oracle certification surely would bear a lot of
weight in any IT aspirants resume.
7
Oracle Database could be categorized into i.
Data Warehousing. ii. Database Application
Development. iii. MySQL. iv. Oracle
Database.
8
Oracle RAC real application clusters In
database computing, Oracle Real Application
Clusters (RAC) is an Oracle Database software
created by Oracle Corporation and introduced in
2001 with Oracle9i. This provides the software
for clustering and soaring availability in Oracle
database environments. Oracle Corporation
includes RAC with the Standard Edition of Oracle
Database which is also known as Baby RAC, but
this is made as an extra-charge option for the
Enterprise Edition. Oracle RAC permits several
computers to run Oracle RDBMS software at the
same time while accessing a single database,
which provides clustering.
9
In a non-RAC Oracle database, a single instance
accesses one single database. The database
consists of a collection of data files, control
files, and redo logs located on disk. An instance
encompasses the collection of Oracle-related
memory and operating system processes that work
on a computer system. In an Oracle RAC
environment, two or more computers, each with an
Oracle RDBMS instance, in tandem gain access to a
single database. This allows an application or
user to connect to any computer and have access
to a single synchronized set of data. The main
aspiration of Oracle RAC is to put into operation
a clustered database to provide performance,
scalability, and resilience. 
10
Oracle RAC is a cluster database with a
collective cache architecture that conquers the
boundaries of traditional shared-nothing and
shared-disk methods to offer highly scalable and
available database solutions for all business
applications. A cluster consists of multiple
interconnected computers or servers that seem as
if they are one server to both the end users and
applications. Oracle RAC facilitates cluster
Oracle databases. Oracle RAC makes use of Oracle
Clusterware for the infrastructure to connect
multiple servers so they operate as a single
system.
11
Oracle Clusterware is a portable cluster
management solution that is incorporated with
Oracle Database. As noted, Oracle Clusterware is
also a mandatory component for using Oracle RAC.
In addition, Oracle Clusterware facilitates both
single-instance Oracle databases and Oracle RAC
databases to employ the Oracle high-availability
infrastructure. Oracle Clusterware enables the
creation of a clustered collection of storage to
be utilized by any combination of single-instance
and Oracle RAC databases.Oracle Clusterware is
the only clusterware is needed for majority of
platforms on which Oracle RAC functions.
Clusterware can also be used from other vendors
if the clusterware is authenticated and certified
for Oracle RAC.
12
The Oracle Database with the Oracle Real
Application Clusters (RAC) alternative permits
operating a myriad of database instances on
different servers in the cluster alongside a
shared set of data files, also known as the
database. The database extends over multiple
hardware systems and still looks like a single
unified database to the application. This
facilitates the operation of commodity hardware
to decrease the total cost of ownership and to
bestow a scalable computing environment which
supports many of the application workloads.
Oracle RAC is Oracles premier shared disk
database clustering technology.
13
Learning Oracle DBA and RAC from the experts can
make all the different success and failure.
Training Icon is one of the leaders in Oracle DBA
and Oracle RAC online training.