民航订座系统PNR容量扩容

对民航订座系统中的旅客记录编号容量扩容、PNR位数升级等进行了研究；提出了PNR位数升级“5／6位并存”的平缓过渡方案。提出了两个“控制开关”的设计方案，即为降低程序上线与投产风险所设计的系统切换开关；为应对其他外航系统不能及时兼容系统升级而设计的外航交互开关。方案已运用于中国民航订座系统的改造，不仅实现了PNR容量扩容，同时保障了系统运行稳定，并最大程度降低了对周边系统的影响。

PNR Capacity Expansion in Computer Reservation System of Civil Aviation

PNR capacity expansion and PNR format change from 5-character to 6-character in computer reservation system of civil aviation are researched. It proposes a gentle reformation scheme for PNR format change, and uses parameters to control different stages and support perimeter systems. It has been applied to the reformation of computer reservation system of civil aviation in China. The scheme not only can expand PNR capacity, but also has little effect on perimeter systems and guarantees the system operating stably.