This section includes an overview of the major steps required to upgrade an existing
Oracle Database to the new Oracle Database 10g release. These procedures transform
an existing Oracle Database system (including associated applications) into an Oracle
Database 10g system. Oracle Database 10g is compatible with all earlier Oracle
Database releases. Therefore, databases upgraded using the procedures described in
this book can work in the same manner as in earlier releases and, optionally, can
leverage new Oracle Database 10g functionality....