|Lesson 11||State and structure of a database|
|Objective||Determine the state of your database system.|
State Structure of Database
This lesson reviews the information presented in our project database. We
will use the initialization files and
V$ views to collect information about our database ORC1. Our ORACLE_HOME is c:\oracle8.
The initorc1.ora file is read by the instance during startup to determine where to find files and to set some parameters. This file should be
backed up regularly and is usually located in ORACLE_HOME\DATABASE. This file points to where the control file(s) are located.
This file is read by the instance at startup and contains information to identify instance parameters and file placement. This file should be duplexed and must be backed up regularly. One copy of this file is usually found in ORACLE_HOME\database directory.
Redo log files
These files should be multiplexed and spread over multiple disk drives. The default location for these files is ORACLE_HOME\database. You need at least two redo logs for Oracle to work.
Archive log files
These files should be duplexed and contain information from the redo logs. They must not reside on the same disk as the redo logs. The default
location for the archive logs is ORACLE_HOME\database/archive.
Here is a list of all the
The next lesson wraps up the module.