Recovery solutions to logic damage of Oracle database;

Integration of WWW Browse and Database Access ——The mechanism and instance of Oracle database gateway;

Performance Optimization about Oracle Database and Its Application in CRM System;

Research of Oracle Database Application Security Problems;

Extending of Spatial Data Types and Spatial Functions in Oracle;

Using XSU to exchange data between Oracle and XML;

This arranging and compiling data system is according to the requirement of the administration of Dujiang weir irrigation area,using module to make structure design and Delphi language to edit programmer on basis of Oracle data base platform software system.

Aim at several factors influenting the oracle data base performance of internet-based enrollment system of colleages and Universities, the optimization method was discussed from the software and hardworce term.

To draw out the advantages of Oracle database,we must set its initial parameters reasonably.

In this paper,the eneryption technology of Oracle database is diseussed,and the method of en- cryption and decryption database using software package DBMS_CRYPTO are presented.