airtel since its inception has been at the forefront of technology and has steered the course of the telecom sector in the country with its world class products and services. airtel’s DSL subscriptions were growing at rapid pace in Tamil Nadu circle. The Operations Support System (OSS) is buckling down and is not able to scale up to the growing needs. The OSS was built in-house 5 years back and was developed on primitive version of one of the free database - MySQL. In order to meet the growing needs, as a first step, airtel decided to migrate the database of OSS from MySQL 3.x to Oracle 10g, a leading database for enterprise applications. The key to making this operation efficient Client approached Sigma Infosolutions.

1. Database Migration
a Cost-effective Standardization
www.sigmainfo.net

2. A leading global telecommunications company with operations in 19
countries across Asia and Africa. The company offers mobile voice & data
services, fixed line, high speed broadband, IPTV, DTH, turnkey telecom
solutions for enterprises and national & international long distance services
to carriers. Client has been ranked among the six best performing technology
companies in the world by business week. Client had 200 million customers
across its operations.
The Client
OSS for a region has several limitations relating to its database such as:
Maintaining application is tedious as one needs to know quite older version
of database and which doesn’t support some of the basic operations like sub-
queries, stored functions etc. and thus in order to maintain the application,
programmer needs to apply some of the workaround which makes application
more fragile.
Carrying out enhancements and tweaks to application are more effort
intensive and error prone as MySQL 3.x has lot of limitation in various SQL
syntax like Stored Procedures, sub-query etc. support is not there in 3.x
version.
90% of reports can not be generated or take a very long time, making
application unusable at times. Due to erroneous data model and slow query
retrieval engine of MySQL3.x, this issue is being faced right now.
With the growing number of subscriptions, scalability of OSS is big
roadblock as data retrieval engine in MySQL 3.x is quite primitive and thus
with larger set of data, retrieval would become even slower.
As current data model is not optimized and tuned, Analytical
reporting/Dashboard not possible with current database structure. Oracle
has many inbuilt features like Materialized views etc. to take care of
analytical needs of application.
In current application creation of data dump is not efficient and thus data
requirements of legal department are not easy to fulfil.
User Interface design not intuitive; options are cluttered on screen, no
separate “tabs” to operate on logically grouped options.
Business Case
sales@sigmainfo.net
“35% cost savings
on functionality
development
Executive Summary
A leading telecom provider in India, since
its inception has been at the forefront of
technology and has steered the course of
the telecom sector in the country with its
world class products and services.
Client’s DSL subscriptions were growing
at rapid pace in another circle. The
Operations Support System (OSS) is
buckling down and is not able to scale up
to the growing needs. The OSS was built
in-house 5 years back and was developed
on primitive version of one of the free
database - MySQL. In order to meet the
growing needs, as a first step, Client
decided to migrate the database of OSS
from MySQL 3.x to Oracle 10g, a leading
database for enterprise applications. The
key to making this operation efficient
Client approached Sigma Infosolutions.
Successes
Migration of OSS Database from MySQL 3.x to Oracle 10g. Sigma has extensive
experience in managing large scale data migration projects for large
enterprise customers. Sigma is well versed with MySQL as well as with Oracle
and has resources having expertise in database related issues.

3. Technology
 Oracle Database 10g
 MySQL
Business Benefits
 35% cost savings on functionality
development
 Complete set of data, functioning
alarms in real-time
 Ongoing operating costs at or better
than budget
 Low system overhead and lower
support costs
 Monthly technical availability is
Solution
Sigma Infosolutions’ development team successfully compiled the architecture
required for the project and followed waterfall model ensuring that the integration of
the system proceeds along with user testing.
Key Modules Developed
o Mapping of complex relationships from disparate sources
o Faster retrieval of data from OSS
o Fast scale up and maintaining the application became easier as it is now
compatible with latest version of Oracle
o Better and standard way of data retrieval architecture was applied
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Next Phase
Oracle 10g offers many more new
features of the shelf and this reduces the
e f f o r t s n e e d e d t o c a r r y o u t
enhancements in the future. Many of
these have been proposed to Client in the
approach document from Sigma and can
be included in later phases.

4. Performance tuning in practice; a hands on approach
About Sigma Infosolutions
“
 Sigma Group, an Indian conglomerate has more than 4 decades of experience in Mining, Chemicals Manufacturing & Export,
Handicrafts Manufacturing & Exports, and Software Development
 Sigma Infosolutions is a TUV certified ISO 9001:2008 and ISO 27001:2005 company
 Headquartered in US with development center in India
 Some of our esteemed customers include Airtel, Zyme Solutions, Yodlee, Celerity Consulting, Resolution Economics, Birla
Global Asset Finance, Fosroc Chemicals, Surgery Planet etc.
 Sigma Infosolutions’ services comprises of application development, application management, IT Consulting, Offshore testing,
and Website and Portal Development
Sigma Infosolutions, Sigma Towers, #66/A, 13th Cross
6th Main, JP Nagar, 3rd Phase, Bangalore- 560078
Telephone: +91-80-40865100
Sigma Infosolutions, 2082 Michelson Dr.
Suite 100, Irvine, CA 92612
Telephone: +1-714-717-1826
Fax: +1-866-405-6750, Toll Free: 1-888-861-7360
Website: www.sigmainfo.net
E-mail: sales@sigmainfo.net
Toll Free: 1-888-861-7360