SQL Loader is a ubiquitous tool in the Oracle world. It has been shipped with Oracle since at least Version 6 and continues to be supported and enhanced with each new version of Oracle, including Oracle8 and Oracle8 i. The job of SQL Loader is to load data from flat files into an Oracle database. It's optimized for loading large volumes of data, and is flexible enough to handle virtually any input format.Almost every Oracle user has to use SQL Loader at one time or another, and DBAs are frequently called upon to load data for the users in their organization. Despite SQL Loader's wide availability and usage, few DBAs and developers know how to get the most out of it. Oracle SQL Loader: The Definitive Guide has everything you need to know to put SQLLoader to its best use: an introduction to SQL Loader, a reference to all of its syntax options, and most importantly, step-by-step instructions for all the SQL Loader tasks you'd want to perform--and maybe some you didn't realize you COULD perform.You'll learn how to construct the necessary control files and load from different types of files containing different types of data (e.g., fixed-width data, delimited data, and data of various datatypes). You'll also learn how to validate data, load it selectively, transform it as it is loaded, and recover after failure. This book explains how to optimize SQL Loader performance by adjusting the transaction size and using the new direct path option. It also covers the newest SQL Loader features--the loading of large object (LOB) columns and the new object types (nested tables, varying arrays, and object tables). Oracle SQL Loader: The Definitive Guide is an indispensable resource for anyone who is new to SQLLoader; a task-oriented learning tool for those who are already using it; and a quick reference for every user. If you want to take best advantage of an essential Oracle tool, you need this book.