What is Oracle?Oracle is a database product that uses the concept of Relational Database Management System, which is the basis used in database technology. In Oracle, Oracle is a database that has new features among the many existing databases. Oracle is the RDBMS which is very good in memanejement. Excess Oracle is able to accommodate many data stored in one database, data recovery, backup and others.Oracle 9i Sample1. Database clusters, using Real Application technology clusters (RAC). One of the functions of the RAC is to provide protection to the continuity of data in the company so that in case of a crash on one database server, it will not affect company performance. This is because the RAC technology allows to create multiple database servers to be as if one database server, database...