Documentation Resources
Here are some handy links to documentation for various products which may be useful as an Oracle DBA:
Oracle Database
Oracle7 Release 7.3.4 DocumentationOracle8i Database Documentation (Release 8.1.7)
Oracle9i Database Documentation Release 1 (9.0.1)
Oracle9i Database Documentation Release 2 (9.2)
Oracle Database Documentation 10g Release 1 (10.1)
Oracle Database Documentation 10g Release 2 (10.2)
Oracle Database Documentation 11g Release 1 (11.1)
Oracle Database Documentation 11g Release 2 (11.2)
Legato
Legato NetWorker V7.0 Administrator's GuideLegato NetWorker Module for Oracle Administrator's Guide 3.0/3.1
Legato Storage Manager (8.1.7)
Legato Single Server Version Documentation for releases 6.1 & 7.1
Apache Modules
HTTP Server mod_plsql User's Guide (Oracle 10.1)HTTP Server mod_plsql User's Guide (Oracle 10.2)
Apache mod_owa PL/SQL Gateway Module
Veritas
Veritas Cluster Server 5.0 User’s Guide for SolarisSharePlex
SharePlex for Oracle, Release Notes and Upgrade Instructions v6.0.0Business Objects
Business Objects 5.1 Supervisor's GuideBusiness Objects 5.1 Deployment Guide for Windows/UNIX