海量数据装载工具SQL Loader技术分析

摘要

为了提高海量数据的装载速度,甲骨文（Oracle 8）数据库提供了一种将外部数据文件中的数据高速批量装载到数据库表中的结构化查询语言装载工具（SQL Loader）。对SQL Loader的工作机制进行了分析、组件进行了剖析、功能进行了解析,提出了改善SQL Loader性能的技术措施。运用实例说明了SQL Loader的操作过程及方法,并通过与常规装载方法的对比分析试验说明了该装载工具的优点。%SQL Loader,a kind of high-speed bulk data loading tool in Oracle database,has the advantages of fast speed and strong control of Oracle database.It also provides an effective means of loading data from outer data file into the database table.Its working mechanism,components,function and using skills are analyzed,and its control file＇s grammatical structure and commonly used parameters are discussed in detail.An example is used to illustrate the data-loading process for SQL Loader.