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"Those
who deny freedom to others deserve it not for themselves, and,
under a just God, cannot retain it."
-Abraham
Lincoln (1809-1865)
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IMPORTANT-READ CAREFULLY
When you install Oracle8i
and Developer in the same machine, be sure to install them on two
different sub-directories. Also you must make sure their home names
are different.
Once you install the Oracle
products, go to the connectivity and play the movie. The movie shows
how to login to Oracle8i using the Oracle tools, such as “SQLPLUS,”
and “FORM Builder.”
To establish connectivity,
you will use Net8 Easy config. If you don’t have “Net8 Easy config,”
you can use the “Net8 assistant” option.
Important notes to
remember:
Oracle Server is an
object-relational database management system that provides an open,
comprehensive, and integrated approach to information management. It
consists of an Oracle database and instance.
The Oracle Database
contains all user data information. It has a physical and a logical
structure.
The “Physical
Structure” is determined by the operating system files; such as
data files, control files, and parameter files.
The “Logical Structure”
is determined by the Oracle Database, such as tablespaces, tables, and
segments.
An instance is a
combination of Oracle background processes and memory buffers.
The memory buffer is called
System Global Area (SGA) and is shared by the database users.
Every time a database is started the system global area is allocated
and Oracle background processes are started.
Oracle Background
Processes Server tasks between memory and disk.
A user establishes
connection and then requests information using a client application
from the Oracle Server.
The Listener process
waits for connection requests from a client application, and routes
each client to a server process.
Server processes are
created on behalf of each user’s application to read a user request
and return the results.
The TNSNAMES.ORA and
SQLNET.ORA files establish client session connectivity to a server
using the local naming option.
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