E-Plus Mobilfunk GmbH & Co. KG (E-Plus Group), a leader in the German telecommunications market, has successfully transitioned itself over the last few years from a mobile phone network provider to a multibrand enterprise. With its own brands and strong partnerships, the company’s broad product portfolio is tailored to meet the needs of various mobile network customer segments. E-Plus Group services more than 22.1 million customers and is experiencing continued growth.
Due to its impressive growth, E-Plus’ existing data warehouse infrastructure had reached its capacity. The data warehouse’s performance was below par with low satisfaction among its 500 users. In addition, as a result of the architecture’s complexity, administrative effort was very high. It was also not possible to guarantee service during unexpected disasters or to guarantee operating hours that met the service level agreement (SLA).
To prepare for increased data volume from the proliferation of data-hungry smartphones and applications, as well as to address performance concerns, E-Plus Group centralized its disparate hardware environment into a central platform using Oracle Exadata Database Machine x2-2 HC Full Rack. With the implementation, E-Plus compressed data volume by 55% to prepare for future data growth. In addition, the company reduced month-end closing time by 25% to 80%. To address availability concerns, E-Plus leveraged Oracle Database 11g Release 2, Enterprise Edition with Real Application Clusters to implement a cost-effective fail-over environment that is deployable and productive for reporting within 24 hours of a disaster striking.