Matakuliah
Tahun
: T0413
: 2009
Introduction to DB2
Pertemuan 1
The DB2 family
system x (Intel), AMD,
system p servers
DB2 for Linux
UNIX and Windows
DB2 for z/OS
DB2 for i5/OS
Mainframe
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(system z)
DB2 for
VSE and VM
Midrange servers
(system i)
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DB2 History
Year
Achievement
1970
IBM invents the relational model and the SQL Language
1983
DB2 on the mainframe is born – First relational database
1993
DB2 for AIX is released
1996
DB2 Universal Database (UDB) version 5 is released
2006
DB2 9, the first hybrid database is released
2007
DB2 9.5 is released
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DB2Installation
• Operating system user ID authority required:
– Windows:
• Part of the local administrators group on Windows (recommended),
or
• A Windows power user ID/Restricted User ID with elevated
privileges feature
– Linux:
• Root user for full support.
• Non-root users can also install but with some restrictions (eg: Only
one instance can be created)
• If problems during the installation, ensure operating system version and
level requirements are met
– http://www.ibm.com/software/data/db2/udb/sysreqs.html
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• DB2 Express-C 9.5 is very easy to install
• Use the GUI-based installation (same Wizard in all platforms):
– Windows:
• <DB2 Imaged unzipped Directory>\EXP\image>
setup.exe
• Installs under: Program Files > IBM > SQLLIB
– Linux:
• <DB2 Image unzipped Directory>/disk1> ./db2setup
• Installs under: opt/ibm/db2/V9.5
• Verify which version and fixpack level you have installed using:
– db2level
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Uninstalling DB2
• Windows (as Admin)
– Add/remove Programs
• Linux (as root)
– You may need to read more on the topics of “instances” later in this course
to understand the following process:
• Optional: Drop all databases. Database files remain intact on your file
systems when you drop an instance without dropping databases first.
• Stop the DB2 Administration Server.
• Remove the Administration Server.
• Stop DB2 instances.
• Remove DB2 instances.
• Remove DB2 products.
– /opt/ibm/db2/V9.5/install> ./db2_deinstall -a
– (Cannot use rpm)
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DB2 Server Editions
Massively Parallel Processor (MPP)
Cluster
DB2
DB2 Data Warehouse Enterprise
DB2 Enterprise with Database Partitioning Feature
DB2 Data Warehouse Base
DB2 Enterprise
DB2 Workgroup
DB2 Express
DB2 Express-C
DB2 Everyplace
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Database Workloads
• The database workload can be one of the factors in determining
which server edition you need.
• There are 3 type of workloads:
OLTP
OLTP stands for online transaction processing. The OLTP type of workload implies
short transactions performing simple SELECT, INSERT, UPDATE, and DELETE
operations affecting a small number of rows. Indexes are commonly used, and
access of the data is random.
OLAP/DSS
OLAP stands for online analytical processing and DSS for decision support
systems. OLAP and DSS have similar types of workload, and they imply complex
SELECT statements, normally using several JOIN operations. These are normally
used for reporting in Data Warehouse/Business Intelligence operations. Access of
the data is mainly sequential.
Mixed
A mixture of OLTP and OLAP workloads.
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How DB2 Server Editions are built
DB2 Enterprise Edition
DB2 Workgroup Edition
DB2 Express Edition
DB2 Express-C
+
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Extra
functionality
+
Extra
functionality
+
Extra
functionality
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DB2 Clients and drivers
IBM Data
Server Client
DB2 for Linux,
UNIX, Windows
IBM Data Server
Runtime Client
DB2 Runtime Client
Merge Modules for
Windows
IBM Data Server Driver
for JDBC and SQLJ
IBM Data Server Driver
for ODBC and CLI
IBM Data Server
Driver for ODBC, CLI
and .Net
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DB2 for z/OS
DB2 Connect for
Linux, UNIX,
Windows
DB2 for i5/OS
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The DB2 Information Center
• The DB2 Information Center contains the DB2 online manuals. It
also includes the manuals of products related to DB2.
• It has a search field
• It can be installed locally, or accessed through the internet
• The internet version is the most up-to-date one. The URLs are:
– V9:
http://publib.boulder.ibm.com/infocenter/db2luw/v9/index.jsp
– V9.5:
http://publib.boulder.ibm.com/infocenter/db2luw/v9r5/index.jsp
• Most of the answers to your questions can be found from the DB2
Information Center!
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The DB2 Environment
DB2 Commands & SQL/XML,
Xquery Statements
SQL/XML, Xquery
Statements
create bufferpool
create tablespace
create table
alter bufferpool
alter tablespace
alter table
select
insert
update
delete
...
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DB2 System Commands
db2set
db2start
db2stop
db2ilist
db2icrt
db2idrop
...
DB2 CLP Commands
db2 update dbm cfg
catalog db
list node directory
create database
list applications
list tablespaces
...
<sql statement>
xquery <
>
DB2 Tools
Command Line Tools
Command Editor
Command Line Processor
Command Window
Development Tools
DB2 Developer Workbench
Project Deployment Tool
General Administration Tools
Control Center
Journal
License Center
Replication Center
Task Center
Information
Information Center
Check for DB2 Updates
Monitoring Tools
Event Analyzer
Health Center
Indoubt Transaction Manager
Memory Visualizer
Activity Monitor
Setup Tools
Configuration Assistant
Configure DB2 .Net Data Provider
Default DB2 Selection Wizard
First Steps
Register Visual Studio Add-ins
DB2 Environment
Instance 'myinst'
Database Manager
Configuration
File (dbm cfg)
Database MYDB1
Database
Configuration
File (db cfg)
Port
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The DB2 Environment
DB2 Server (Linux/Windows)
Instance DB2
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Port
CREATING AN INSTANCE
• Windows (as Admin)
– db2icrt myinst
• Linux (as root)
– /home/db2inst1/instance> ./db2icrt -u
db2fenc2 db2inst2
• db2fenc2 and db2inst2 must exist before
hand.
– To create an instance using the GUI:
• /home/db2inst1/instance>./db2isetup
• In this case, the user IDs are created for
you.
• Note if you run as non-root, you can only
see the current configuration of existing
instances.
– Note: Running from db2inst1 home
directory, which has soft links to
/opt/ibm/db2/V9.5 (from which the same 14
commands could be run)
DB2 Server (Linux/Windows)
Instance DB2
Instance myinst
Port
Port
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Port
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Creating and connecting to a Database
CREATE DATABASE mydb1 [AS dbalias]
[ON drive (On Windows) / path (On
Linux)]
• NOTE:
– If the database alias (dbalias) is not provided, it will use
the same as the database name
CONNECT TO dbalias [user userID using password]
• NOTE:
– userId/password are required for remote connectio
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DB2 Server (Linux/Windows)
Instance DB2
Database MYDB1
Instance myinst
Database MYDB1
Port
Port
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Port
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DB2 Server (Linux/Windows)
Instance DB2
Database MYDB1
SYSCATSPACE
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Instance myinst
Database MYDB1
SYSCATSPACE
TEMPSPACE1
Port
TEMPSPACE1
USERSPACE1
USERSPACE1
IBMDEFAULTBP
IBMDEFAULTBP
LOGS
LOGS
Port
Port
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The DB2 Administration Server (DAS)
• Daemon process
– In prior DB2 versions, it was a especial type of instance
– Syntax of DAS commands are similar to instance
commands
• Must be running to allow for remote GUI administration of a
DB2 server, other than that, not needed
• Only one DAS per server
– DAS created at installation.
• On Windows it’s called: DB2DAS00
• On Linux it’s called: dasusr1
– On Linux dasusr1 maps to a Linux user
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DAS commands
• Creating/dropping the DAS
Windows (As admin)
– db2admin create
– db2admin drop
Linux (As root)
– /opt/ibm/db2/V9.5> ./dascrt –u <existing Linux user>
– /opt/ibm/db2/V9.5> ./dasdrop
• Starting/stopping the DAS (as the DAS user)
– db2admin start
– db2admin stop
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DB2 data server big picture
admin server
(DAS)
My Server
instance 2
instance 1
Database 1
 One physical machine has:
One Admin Server
One or multiple Instances
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Database 2
Database 1
 Each Instance (Database Manager):
Is a logical server context
Can have one or more databases
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