Project Background
China Mobile Gansu supports communication, data, IP telephony, and multimedia services across a wide regional footprint, while continuing to invest in 5G, computing infrastructure, and data-center construction.
Its integrated-resource system was one of the first O-domain core systems selected for database localization, making the project both technically sensitive and strategically important.
Challenges and Requirements
- The customer expected adaptation and go-live to be completed quickly within a very limited project window.
- The system made heavy use of Oracle features including PL/SQL, functions, procedures, packages, and some non-standard syntax.
- As an O-domain core system, it exchanged large amounts of data and interfaces with B-domain and M-domain applications.
- Batch-processing scripts placed additional pressure on throughput and resource utilization.
Implementation Approach
Oracle-compatible initialization on Highgo V9
The database was initialized in Oracle mode so that most source-side objects, syntax, and package behavior could be carried forward with minimal application-side rework.
HA plus read-write split architecture
Highgo used 1+2 and 1+1 cluster patterns to support automatic failover while also separating write traffic from read-only requests.
Real-time synchronization through the fusion platform
The migration design used Highgo’s fusion platform for second-level real-time synchronization between Highgo and Oracle during the transition window.
Project Highlights
- Optimized cross-physical-cluster access for remote-table processing and data-volume reduction.
- Achieved second-level real-time synchronization from Highgo V9 to Oracle using the fusion platform.
- Delivered deep compatibility for Oracle partitioning, functions, syntax, and package behaviors to reduce application refactoring effort.
- Improved throughput further by using read-write split clusters so that standby nodes could serve read-only traffic directly.
Customer Value
- Delivered one of the earliest nationwide breakthroughs in domestic transformation for a carrier O-domain core system, creating a strong reference for later provinces.
- Demonstrated that one Highgo database platform could support both heavy transactional workloads and analytical batch-processing scripts.
- Improved business continuity through fast fault recognition, automatic switching, and anti-split-brain mechanisms.
- Reduced application transformation cost significantly through Oracle-compatible mode, with overall effort cut by about 90 percent.