Zero-Downtime Infrastructure Migration for the biggest telecom operator in Poland

Using Oracle GoldenGate for Data Replication.

Play Mobile/P4 is one of the biggest cellular network in Poland owned by the French telecommunications company Iliad. Play decided to work with Goldenore to ensure business continuity and uninterrupted functioning of systems during migration


in an uninterrupted and streamlined process 


during migration 


of replicated data 



  • Necessary migration to a new infrastructure put the company at risk ​
  • Possible negative consequences included: loss of vital information necessary for billing clients, financial losses caused by unavailability of the billing system, security non-compliance


  • The billing system remained active during migration, there was no downtime​
  • There were no application errors caused by incompatibility with the new environment, and data consistency was confirmed after migration ​
  • The migration did not disrupt business at any time throughout the process​


The architecture of the solution is based on Oracle GoldenGate and Oracle GoldenGate Veridata:

Oracle GoldenGate solution to enable real-time data replication with zero downtime for business databases and applications,

Oracle GoldenGate Veridata to enable real-time monitoring of replicated data consistency validation.



  • Replication of the billing system data in preparation for data migration
  • Changes in the IBM hardware layer: Intel
  • Structural changes in database objects due to the upgrade of the application version


  • Uninterrupted and streamlined process of transferring databases (10TB) from the old to the new setup
  • Zero-downtime during the database migration process
  • No additional load from replication tools
  • Confirmation of data quality between replication pages during the switching of databases
  • Implementation of advanced monitoring of the replication process

Technology Partners


Oracle is the company that has created the world’s first – and only – autonomous database that helps to organise and secure client data. Oracle Cloud Infrastructure provides increased efficiency, security and cost savings.


A pioneer in automated data integration, Fivetran excels in delivering fully-managed and pre-built connectors that streamline data pipelines.

Red Hat

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