Introduction
Copyright © 2006, Oracle. All rights reserved.
Lesson Objectives
After completing this lesson, you should be able to do
the following:
• List the course objectives and explain the class
structure
• Review the Oracle Database 10g architecture
1-2
Copyright © 2006, Oracle. All rights reserved.
Course Objectives
In this course, you gain experience in:
• Using Recovery Manager (RMAN) for advanced
backup and recovery
• Employing database monitoring practices for
memory, performance, and storage
• Managing resources, job schedules, security, and
globalization issues
1-3
Copyright © 2006, Oracle. All rights reserved.
Suggested Schedule
1: Introduction
2: Configuring RMAN
3: Using RMAN
4: Non-Critical Recovery
5: Recovery
6: Flashback
7: Corruption
8: Memory
9: Performance
1-4
10: Schema
11: Storage
12: ASM
13: Resources
14: Scheduler
15: Security
16: Globalization
17: Workshop
Appendixes
Copyright © 2006, Oracle. All rights reserved.
What Is Covered in the DBAI Course
1-5
1.
2.
3.
4.
Introduction
Installation
DB Creation
Instance
13. Performance
14. Backup & Recovery
Concepts
15. Backup
5.
6.
7.
8.
Storage
Users
Schema
Data & Concurrency
16. Recovery
17. Flashback
18. Moving Data
9.
10.
11.
12.
Undo
Security
Network
Proactive Maintenance
Copyright © 2006, Oracle. All rights reserved.
Course Examples: The HR Schema
REGIONS
REGION_ID (PK)
REGION_NAME
COUNTRIES
COUNTRY_ID (PK)
COUNTRY_NAME
REGION_ID (FK)
JOB_ID (PK)
JOB_TITLE
MIN_SALARY
MAX_SALARY
LOCATIONS
EMPLOYEES
LOCATION_ID (PK)
STREET_ADDRESS
POSTAL_CODE
CITY
STATE_PROVINCE
COUNTRY_ID (FK)
EMPLOYEE_ID (PK)
FIRST_NAME
LAST_NAME
EMAIL
PHONE_NUMBER
HIRE_DATE
JOB_ID (FK)
SALARY
COMMISION_PCT
MANAGER_ID (FK)
DEPARTMENT_ID (FK)
DEPARTMENTS
DEPARTMENT_ID (PK)
DEPARTMENT_NAME
MANAGER_ID
LOCATION_ID (FK)
1-6
JOBS
Copyright © 2006, Oracle. All rights reserved.
JOB_HISTORY
EMPLOYEE_ID (PK)
START_DATE (PK)
END_DATE
JOB_ID (FK)
DEPARTMENT_ID (FK)
Oracle Database 10g:
The Database for the Grid
•
•
•
•
•
•
•
1-7
Automatic Storage Management
Portable clusterware
Real Application Clusters and automatic workload
management
Resource Manager
Oracle Streams
Centralized management with Enterprise Manager
Grid Control
Oracle Database 10g new self-management
features
Copyright © 2006, Oracle. All rights reserved.
Database Architecture: Review
Memory structures
Instance
System Global Area (SGA)
Process structures
Background processes
Storage structures
1-8
Database files
Copyright © 2006, Oracle. All rights reserved.
Oracle Memory Structures
Server
process
1
PGA
Server
process
2
Background
process
PGA
SGA
1-9
Shared pool
Streams pool
Large pool
Java pool
Database
buffer cache
Redo log
buffer
Copyright © 2006, Oracle. All rights reserved.
PGA
Oracle Processes
Server
process
Server
process
Server
process
Server
process
System Global Area
(SGA)
System
Monitor
(SMON)
Process
Monitor
(PMON)
Database
Writer
(DBWn)
Checkpoint
(CKPT)
LogWriter
(LGWR)
Background processes
1-11
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Archiver
(ARCn)
Reviewing Oracle Instance Management
Example:
Starting a database instance
Establishing a connection
System
Monitor
(SMON)
Process
Monitor
(PMON)
1 Instance
SGA
Database
buffer cache
Redo log
buffer
Database
Writer
(DBWn)
LogWriter
(LGWR)
Server
3 process
2
User process
Data files
1-12
Copyright © 2006, Oracle. All rights reserved.
Redo log files
Reviewing Oracle Instance Management
Instance
Example:
Processing a
SQL statement
10
SGA
5
Server
process
7
Database
buffer cache
Database
Checkpoint LogWriter Archiver
Writer
(CKPT)
(LGWR)
(ARCn)
(DBWn)
9
User process
8
6
Data files
Control file
4 The user updates a row.
1-13
Redo log
buffer
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Redo log
files
Archive
logs
Physical Database Structure
Control files
Data files
Parameter file
Backup files
Password file
1-14
Online redo log files
Archive log files
Alert and trace log files
Copyright © 2006, Oracle. All rights reserved.
Oracle Managed Files (OMF)
Specify file operations in terms of database objects
rather than file names.
Parameter
Description
DB_CREATE_FILE_DEST
Defines the location of the default
file system directory for data files
and temporary files
DB_CREATE_ONLINE_LOG_DEST_n
Defines the location for redo log
files and control file creation
DB_RECOVERY_FILE_DEST
Defines the location for RMAN
backups
Example:
SQL> ALTER SYSTEM SET DB_CREATE_FILE_DEST = '/u01/oradata';
SQL> CREATE TABLESPACE tbs_1;
1-16
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Logical and Physical Database Structures
Logical
Physical
Database
Schema
Tablespace
Data file
Segment
Extent
Oracle data
block
1-17
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OS block
Database Architecture:
Summary of Structural Components
•
Memory structures
– System Global Area (SGA): Database buffer cache,
redo buffer, and various pools
– Program Global Area (PGA)
•
Process structures
– User process and server process
– Background processes: SMON, PMON, DBWn,
CKPT, LGWR, ARCn, and so on
•
Storage structures
– Logical: Database, schema, tablespace, segment,
extent, and Oracle block
– Physical: Files for data, parameters, redo, and OS
block
1-19
Copyright © 2006, Oracle. All rights reserved.
Summary
In this lesson, you should have learned how to:
• List the course objectives
• Review the Oracle Database 10g architecture
1-20
Copyright © 2006, Oracle. All rights reserved.