随着信息技术的发展,大型主机在民航信息系统中仍占据着举足轻重的地位。主机数据库是文件型数据库,由多个数据库文件构成,常出现某数据库文件空间充裕,而个别Freespace Record空间却不足的情形,这对业务会产生不良影响。FSMonitor是一个用于监控主机数据库文件Freespace Record空间的系统,引入W8236编码、RLE压缩与Checksum校验,将记录数据库文件使用情况的FS$SYS文件由主机系统传输至开放系统。在开放系统解析该文件,进行数据库文件用度预测与智能报警,以此确保数据库空间充足、系统稳定运行,同时降低大型主机高昂的资源消耗。

With the development of information technology, mainframes still play a pivotal role in civil aviation information systems. The host database is a file-based database composed of multiple database files. It often occurs that the space of a certain database file is abundant, while the space of individual Freespace Record is insufficient, which has an adverse impact on business. FSMonitor is a system used to monitor the Freespace Record space of host database files. It introduces W8236 encoding, RLE compression, and Checksum verification to transfer the FS$SYS file, which records the usage of database files, from the host system to the open system. The file is parsed in the open system for database file usage prediction and intelligent alarm, so as to ensure sufficient database space and the stable operation of the system. At the same time, it reduces the high-cost resource consumption of mainframes.