beyond the glitz - dispelling db2 myths

2013 IBM Corporation

Presented by Jarek MiszczykSCEM for OpenStackRochester Minnesota USA

Beyond the Glitz - Dispelling DB2 Myths


Traditional RPG and COBOL programmers

Java, PHP, .NETprogrammers

SQL Server,Oracle,

DB2 LUWDBAs

The Situation

EducateIlluminateHandle Objections


No, were not using DB2, were using DDS, PFs, LFs and RPG

We want to use SQL, how do we get DB2?

We need to move to another platform to use a relation database

IBM told us we need to buy DB2, so we are moving to SQL Server


DB2 for i is back level as compared to the other DB2 family members

How do I get version 10 of DB2 for i?

DB2 for i is not strategic

DB2 for i has not been enhanced for many years

DB2 for i is not a relational database management system

DB2 for i is closed and proprietary

On Oracle we partition, how do I do this with DB2 for i?

We extract data from IBM i to Windows to avoid green screens


DB2 for i cannot handle SQL queries

SQL is slower than "native"

RPG is better than SQL

DB2 for i cannot handle our data warehouse

Running SQL on IBM i kills the system

We moved to SQL Server to run SQL better

We use QUERY/400 to extract data because ODBC is slow

This database is slow because its not partitioned


We dont need a DBA, we use AS/400

DB2 for i is more expensive than other databases

System i Navigator is a risk to the security of the system, we do not allow anyone to use it

There are limited DBA tools available for DB2 for i

I dont know about AS/400, but I can do it with Oracle

Whats a table, we use physical files

We are using .NET so its best to use SQL Server


Let me Summarize


Reasons given for wanting to move off DB2 for i?

Capability it doesnt have the functionality that we need

Capacity the database cant handle our growth

Convenience the other database is easier to use and maintain

Contraptions there are more tools available over there

Crowd everyone else is doing it, right?

Creaky this box doesnt have anything new

Credulous I dont know anything about IBM i

Cost Im sure its more expensive to stay on IBM i


The Truth

DB2 for i is both ISO 2011 and ANSI 2011 SQL Standards (core) compliant

DB2 for i provides a fully functional standard SQL programming language in addition to rich data access capabilities (and the first to do so)

DB2 for i has always been a strong transaction processing database, with very high data integrity

DB2 for i has technologies specially suited for data warehouse and BI environments

Encoded Vector Indexes LPG technology SMP parallelism Autonomic Learning MQT summarized tables

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

Ability to handle 435 Terabytes of data and/or 1,100 billion rows in a single SQL table on a single system

DB2 for i can bring to bear all configured processors against a single SQL statement using Symmetric Multiprocessing

Or run thousands of separate queries at a time Or mix the workloads

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

DB2 for i as an integrated database is one of the easiest databases to use and maintain

which is a blessing and a curse no DBA to talk about it!

DB2 for i provides lots of interfaces for access DRDA, JDBC, CLI, ODBC, .net, embedded, PHP

driver.

Oracle is synonymous with Oracle DBA Ever wonder why?

SQL Server configurations are often configured as farms

Ever wonder why?

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

IBM i Navigator provides a rich database management interface

Rational and InfoSphere tooling available from IBM

3rd party solutions via a vast ISV community

Various access drivers included, such as JDBC, ODBC and CLI offer plug and play capability for tools

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

Ah, heres a root cause

IBM stinks at marketing compared to the others

By the way:

Over 100,000 enterprises run on IBM i With 100,000s of systems With millions of users

In 115 countries

In virtually all industries

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

IBM i leverages the latest capabilities in Power Systems Technology

DB2 for i has dozens of patents, most which remain industry leading edge

Automatic column stats, Autonomic learning, Automatic index creation, LPG, Encoded Vector Indexes

JVM is the latest from IBM research

PHP is full function on IBM i

Integrated Web Server

And, I mean this sincerely: RPG Rocks!

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

Once again, IBM stinks at marketing

Educate yourself and educate others!

Youre here. Perfect!

Avoid throwing out the baby with the bath water

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


The Truth

* ITG Management Brief: Value Proposition for IBM Power Systems Servers and IBM i - Minimizing Costs and Risks for Midsize Businesses; January 2011

Acquisition costs* 18% less than x86 servers with Windows

Server and SQL Server databases 43% less than x86 servers with Linux and

Oracle databases Three-year ongoing costs* full time

equivalent administrators 55% less than Windows / SQL Server 60% less than Linux / Oracle

IBM provides an IBM i for BI appliance starting at ~$40K (US)

Requires no additional training to learn a new operating environment

Comes with everything needed to have a reporting server up and running

Many industry appliances start well over $100K, several over $500K

Capability

Capacity

Convenience

Contraptions

Crowd

Creaky

Credulous

Cost


Search for Corruption


I think you will all agree with me that database corruption is one of the nightmares in the life of a DBA.

The most common cause of database corruption (more than 95% of all corruption cases) that we in PSS encounter turn out to be caused by a platform issue, which is a layer below the SQL Server. The most common individual cause is a 3rd party driver or firmware bug. The next most common cause is an actual hardware fault and are typically either of Disk, Controller, CPU, or Memory Module(s). As of all Database Management Systems, SQL Server heavily relies on the Disk Subsystem for storing and retrieving data. Any issues in the Disk Subsystem, the Disk Controllers or the Communication Channels or even the Disk Drivers can cause databases to become corrupt.

fromDatabase Corruption Part 1 :: Introduction to Database Corruption in SQL Serverhttp://blogs.msdn.com/b/suhde/archive/2009/04/08/introduction-to-database-corruption-in-sql-server.aspx


My SQL Server Database is Corrupt - Now What?!

I was asked how often corruption really occurs in the real world.My answer was, "hundreds to thousands of times every week across the world, in the tens of millions of SQL Server databases.".

Every single week I receive multiple emails asking for some advice about corruption recovery. When I'm teaching about corruption in our High Availability and Disaster Recovery Immersion Event, I always tell the class that I expect every DBA to see database corruption at some point during their career.

I'll end by saying this: if you think that corruption won't happen to you at some point in your career, I think you'll be surprised. Be prepared!

fromhttp://www.sqlservercentral.com/articles/Corruption/96117/


Thus, one of the most important and often-overlooked index tuning tasks is managing the index page's fill factor. In other words, when you rebuild or reorganize an index putting its pages back in order so that SQL Server doesnt have to jump around how much free space should you leave on each page?

fromIndex tuning for the reluctant DBAhttp://searchsqlserver.techtarget.com/tip/Index-tuning-for-the-reluctant-DBA?


Oracle DBA Salaries are among the highest in the IT industry, with Oracle DBA salaries now averaging over $100,000 per year.

fromOracle News by Burleson ConsultingDecember 3, 2011http://www.dba-oracle.com/t_2012_dba_salary.htm


IBM's DB2 Family

Three code bases...

Based on the system history, architecture and operating system DB2 for i (System i, iSeries, AS/400)

DB2 for z (System z, zSeries, S/390, mainframe)

DB2 for luw (Linux, UNIX, Windows , System p, System x, distributed)

Version/Release is based on packaging and level of integration

DB2 for i 7.1 plus TR6 is the latest and greatest


DB2 Family

z/OS, IBM i, Linux/Unix/Windows (LUW)

Managing family compatibility Information Management Architecture Board SQL Language Council

Selective technology sharing Designs, algorithms, and code

Two Types of Differences Short term differences based on different

release dates and different customer priorities

Long term differences based on Operating System differences (isolated to database configuration, management, and utilities)

0

5

10

15

20

25

z/OS 10.1 IBM i 7.1 LUW 9.7

1st 2nd 3rdOrder to Implement

Introducing Enhancements


Not a separate product the RDBMS is integrated into IBM i

IBM i operating system uses DB2 for i and vice versa

RDBMS not a separate charge, but a few priced options or LPPs DB2 Multisystem

DB2 Symmetric Multiprocessing

Query Manager and SQL Development Kit

DB2 Web Query

Release numbering is not the same, or equivalent to other DB2 members

Native and SQL Interfaces preserves investment

Excellent interoperability and national language support

Easier to own, use and maintain

Management GUI via

IBM i Navigator (windows client)Navigator for i (web client)

DB2 for i Key Differences


InfoSphere Data Architect

Enterprise data modeling and management Compare & synchronize Version Control Forward & reverse engineering

Model analyzer for enterprise standard conformance

Database development SQL and Java Procedures and Functions

IBM Data Studio SQL procedures Java procedures External procedures Functions Run and Deploy Graphical Debug SOA

DB2 Family Products


0

50000

100000

150000

200000

250000

300000

POWER6 8-CoreIBM i 6.1



SAP BI Mixed Load Benchmark

IBM i 7.1 and POWER7 deliver 80% Improvement

Q

u

e

r

y

N

a

v

i

g

a

t

i

o

n

S

t

e

p

s

/

h

o

u

r

POWER7 delivers 56% improvement

Leadership of DB2 for i

0 10 20 30 40 50 60 70 80 90

Typical DBA Tasks DB2 for iManage DASD Space Allocation Automated

Review Table Space Allocations & Extents AutomatedReview & Balance Indexes Automated

Application Rebinding AutomatedMaintain Database Integrity AutomatedUpdate Database Statistics Automated

Synchronized OS & DB User Security AutomatedReload Data for Hardware & Software Upgrades Automated

Load Data into Data Base Parallel Data Import/ExportBuild and Manage DB Backup & Recovery System i Navigator

Create & Review Indexes for Tables System i NavigatorPerformance Analysis & Tuning (DB & System) System i Navigator

Create and Maintain DB Schema System i Navigator & 3rd Party Tools (Infosphere Data Architect, ERwin, PowerDesigner,

Embarcedero,etc.)Automated DB Performance Profiling Centerfield HomeRun

Advanced DB Performance Analysis & Tuning System i Navigator - Certerfield HomeRun

Data Replication & Consolidation Multiple IBM & 3rd Party Products

IBM Power Systems Platform Leader in SAP Query Performance

ISO/ANS SQL Standard - CoreEase of Use - Self Managing

Integrated Security

Self-protecting User profiles integration (IBM

i and SQL) Object & column level

privileges Row-level authority via views,

table functions, and/or exits Authorization lists Program adopted authority Extensive auditing Kerberos & EIM

Encryption 128-bit encryption (3DES & AES) SSL communications CGA Cryptographic Service

Provider Interfaces

Java Cryptography Extension CCA Hardware APIs Cryptographic Services APIs SQL ENCRYPT / DECRYPT

Key Management Field Procedures

Microsoft SQL Server 2012

Oracle 11g

DB2 for i 7.1

DB2 for LUW 9.7

DB2 for z/OS 10


ISO/ANS Standard LimitsDatabase Constructs FIPS Oracle 11g Microsoft SQL

Server 2008 R2DB2 for i V7R1

DB2 for LUW V9.7

DB2 for z/OS V10

Length of an identifier (in bytes) 18 30 128 128 128 128 Length of CHARACTER datatype (in bytes) 240 2000 8000 32766 254 255 Decimal precision of NUMERIC datatype 15 38 38 63 31 31 Decimal precision of DECIMAL datatype 15 38 38 63 31 31 Decimal precision of INTEGER datatype 9 38 10 10 10 10 Decimal precision of SMALLINT datatype 4 38 5 5 5 5 Binary precision of FLOAT datatype 20 126 53 53 53 53 Binary precision of REAL datatype 20 63 24 24 24 21 or 24 Binary precision of DOUBLE PRECISION datatype 30 126 53 53 53 53 Columns in a table 100 1000 1024 8000 1012 750 Values in an INSERT statement 100 1000 1024 8000 1012 750 Set clauses in an UPDATE statement 20 1000 1024 8000 1012 750 Length of a row * 2000 2000000 * 8060 * 32766 * 32 677 * 32714 * Columns in a UNIQUE constraint 6 32 16 120 64 64 Length of a UNIQUE constraint 120 .5

DB_BLOCK_SIZE900 32K 8192 2000

Length of foreign key column list 120 .5 DB_BLOCK_SIZE

900 32K 8192 2000

Columns in a GROUP BY clause 6 255 Limited by length

Limited by length

1012 750

Length of GROUP BY column list 120 DB_BLOCK_SIZE 8060 32766 32677 16000 Sort specifications in ORDER BY clause 6 255 Limited by

lengthLimited by

length1012 750

Length of ORDER BY column list 120 DB_BLOCK_SIZE 8060 32766 32677 16000 Columns in a referential integrity constraint 6 32 16 120 64 64 Tables referenced in a SQL statement 15 No limit No limit 1000 No limit 225

Cursors simultaneously open 10 OPEN_CURSORS 2 gig No limit No limit No limit Items in a SELECT list 100 1000 4096 8000 1012 750

Largest limit* LOB and long varchar columns are in addition to this lim it


DB2 for i Interfaces OPEN for Business

123 Fish, Joe 555 20000 001124 Olson, Ole 501 20000 501125 Smith, Sally 555 32000 555126 Johnson, John 501 38000 001127 Smith, Jim 555 30000 555

SQL Table or View or DDS Physical or Logical File

Cobol

STARTREAD

RPG

SETLLREAD

C or C++

RopenRread

Native InterfacesSQL Interfaces

Extended Dynamic Remote SQL (XDA)

JDESAP

Distributed Relational Database (DRDA)

JDBC ODBC.NET ADO

Cobol

EXEC SQLFETCH

EXEC SQLFETCH

EXEC SQLFETCH

RPG C or C++

DB2 Connect Drivers

Host Server (ZDA)

System i Access Drivers

JDBC ODBC.NET ADO

System i Access Optimized APIs

Distributed Data Management (DDM

Cobol

STARTREAD

RPG

SETLLREAD

C or C++

RopenRread

JDBCToolbox JDBC DriverNative JDBC Driver

Cobol

EXEC SQLFETCH

EXEC SQLFETCH

EXEC SQLFETCH

RPG C or C++

Embedded SQL

CLICobol

SQLExecDirectSQL FETCH

SQLExecDirectSQLFETCH

SQLExecDirectSQLFETCH

RPG C or C++

Cobol

QSQPRCED

QSQPRCED

QSQPRCED

RPG C or C++

QSQPRCEDAPI


Data Centric Application Infrastructure

Why use IBM Power Systems and IBM i


IBM POWER - the Data-centric Infrastructure

DB2 for iIBM i

Power System

IBM POWER7 and POWER7+ Scalable with up to 256 CPUs Very Large Memory System Very Large I/O System Symmetric Multiprocessing Resource Virtualization Logical Partitioning Dynamic Resource Sharing Support for running multiple OS

ReliableEasy to InstallEasy to UpgradeEasy to Own



DB2 for iIBM i

Power System

State of the Art Operating System Multi-User from the ground up Object based Single Level Storage Storage Management Work Management Technology Independence

SecureRobustReliableEasy to InstallEasy to UseEasy to Upgrade



DB2 for iIBM i

Power System

State of the Art Integration State of the Art Query Optimizer State of the Art Database Engine Object based Scalable Parallelism without partitioning Remote Journaling (log shipping)

SecureRobustReliableOpenEasy to Use


TheAdvantage?

IBM Power + IBM i for Data


Solutions

IBM i DB2

POWER

Integration

Thekey toSimplicity!

Thekey to

Productivity!

IBM Power + IBM i for Data


Open for Discussion

beyond the glitz - dispelling db2 myths

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