The RUNSTATS utility updates statistics in the system catalog tables to help with the query optimization process.
RUNSTATS 实用程序用于更新系统目录表中的统计信息，以帮助查询优化过程。
2
The DB2 optimizer USES catalog statistics to determine the best access path, and the main method employed to update these catalog statistics is to run the RUNSTATS utility.
DB 2优化器使用目录统计信息来确定最佳的访问路径，而更新这些目录统计信息所采用的主要方法就是运行RUNSTATS实用程序。
3
The runstats utility can be used to update statistics in system catalog tables to facilitate the query optimization process.