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데모와함께살펴보는TimesTen 11g 신기능및특장점 1부임베디드사업본부 / 컨설턴트홍영훈 (younghun.hong@oracle.com )

Agenda

• Performance : Response Time & Throughput

• New APIs : Easy Application Development

• High Availability : Self Failure Detection &

Recovery

Performance

Lightning Fast Response Time

Oracle TimesTen In-Memory Database 11.2.1.1, Intel Xeon 3.0 Ghz 64-bit Oracle Enterprise Linux

0

4

8

12

16

Mic

rose

cond

s

Update a record Read a record

Average Response TimeTimesTen In-Memory Database

15micro-seconds

5micro-seconds

Why Is TimesTen So Fast?

• In-Memory Database• Entire database is always in memory• Designed and optimized for memory layout• No buffer cache management overhead• Shorter code path = faster performance

• Application program can link directly to the TimesTendatabase • Database operations executed directly from the application process’

address space • Eliminate network and inter-process communication overhead • Achieve extremely low response time (like calling a procedure)

TimesTen VS Conventional RDBMS

Connection 부하 (TCP, IPC)

DBMS 엔진TimesTen

Disk-based

RDBMS메모리복사부하

데이터주소변환부하

I/O 부하

추가기능에대한부하

Oracle-TimesTenIn-Memory Database

Conventional RDBMS

버퍼관리부하

ODBC API

ODBC/Native API

Applications

• Embeddable• Direct-Linked• Memory-Tuned Data Layout• Disks to Ensure Durability/Recovery

Applications

Direct-Link 접속 v.s. C/S 접속C/S (TCP/IP,UNIX Domain Socket,IPC)

A?

In-MemoryDatabase

Application

Maximized and Cost Effective for Data Handlinglike PL/SQL 모듈

AA

ApplicationIn-MemoryDatabase

Serverprocess

Cost $$ Cost $$

A?A? A?

AAA A

Not Maximized and Cost Effectivefor Data Handling

Direct-linked Connection

Conventional C/S Connection

DEMO 1 –Response Time &Throughput

[Demo1-1]Direct-Link 접속 v.s. C/S 접속의수행시간비교

C/S (TCP/IP,UNIX Domain Socket,IPC)

Direct Link (Shared Memory) protected by Micrologging™

• ttisql , ttisqlCS 를이용 , 각각 Direct 와Client/Server 접속형태로 TimesTen에연결하여동일 Query를수행

• TimesTen은 Direct , C/S application들이동시에접속가능하고이를 ttstatus라는 tool을이용해서확인가능

ttisqlCS

ttisql

[Demo1]Direct-Link 접속 v.s. C/S 접속의수행시간비교

• SQL

select count(*) from tb_test1;insert into tb_test1 values(100001 , 'CH00100001',100001,'CH00100001','CH00100001','CH00100001','ABCDE ','9999999999',100001,sysdate);update tb_test1 set c2='CH00100002', c3 = 100002 , c4='CH00100002', c5='CH00100002', c10 = sysdate where c1=100001;select * from tb_test1 where c1=100001;delete from tb_test1 where c1=100001;

• TABLE LAYOUT

[Demo1]Response Time : Direct-Link v.s. C/S

Insert : 0.000100 sec.

update : 0.000062 sec.

select : 0.000048 sec.

delete : 0.000048 sec.

Insert : 0.000158 sec.

update : 0.000120 sec.

select : 0.000109 sec.

delete : 0.000104 sec.

[Demo1-2 Direct Response Time]

[Demo1-3 C/S Response Time]

[Demo1] Concurrency : Direct-Link & C/S

C/S 접속서버process

18569Client 의 PID :

18564

Direct 접속

[Demo1-4 concurrency]

[Demo1]Direct-Link Throughput :Insert - 8개 direct link application들이동시에 1,000,000 건 insert

-시스템자원사용효율의극대화CPU사용이 USER 에집중SYSTEM 사용이매우적음CS(Context Switch)이매우적음

-작업종료시시스템자원즉시반환

- Application은시스템자원낭비없이insert 작업효율을극대화

140,043 TPS

[Demo1-5 insert throughput]

[Demo1] Client/Server Throughput : Insert

- 12개 c/s application들이동시에 1,000,000 건 insert

-시스템자원사용효율상대적으로떨어짐CPU SYSTEM 사용이높아짐CS(Context Switch)이높아짐

-작업종료시시스템자원즉시반환

- Application은 insert 작업을위해추가적인작업(SYSTEM CPU)이필요

78,853 TPS

[Demo1] Direct-Link Throughput :select / update

- 16개 direct link application들이동시에 1,000,000 건을 update(8개) , Select(8개)

-시스템자원사용효율의극대화CPU사용이 USER 에집중SYSTEM 사용이매우적음CS(Context Switch)이매우적음

-작업종료시시스템자원즉시반환

- Application은시스템자원낭비없이Select/Update 작업효율을극대화

Select 379,118 TPS

Update 113,963 TPS

[Demo1-6 select/update throughput]

[Demo1] Client/Server Throughput : select / update

- 24개 direct link application들이동시에 1,000,000 건을 update(12개) , Select(12개)

-시스템자원사용효율의극대화CPU사용이 USER 에집중SYSTEM 사용이매우적음CS(Context Switch)이매우적음

-작업종료시시스템자원즉시반환

- Application은시스템자원낭비없이Select/Update 작업효율을극대화

Select 97,894

Update 55,695 TPS

New APIs

In-Memory Database CacheApplication Development Frameworks

Pro*C

PL/SQL

LanguageC/C++

ODBCttClasses

OCI

J2EE App Servers OR Mapping

New in 11g release• Oracle Call Interface (OCI) and Pro*C Support• PL/SQL – ability to invoke PL/SQL code from all supported APIs

IMDB CACHE

Minimal Application ChangesPL/SQL, OCI, and Pro*C in TimesTen Database

• PL/SQL support• PL/SQL engine implemented inside TimesTen database• Same Oracle PL/SQL language• Subset of packages

• OCI Support• Identical API signatures as used for the Oracle Database• Uses the same configuration file for TNS name entries• TimesTen OCI application programs can use direct-linked (in-process)

connection mode or client/server mode• Subset of functions

• Pro*C/C++ support• Built using the same Oracle Pro*C/C++ precompiler

• Minimal application changes• Extremely fast response time and high throughput

In-Memory Database Cache

Real Application Cluster

Automatic Storage Management

Oracle In-Memory Database CacheLow-Cost Extreme Performance in the Middle-tier

• Utilizes middle-tier resources

• Data cached in memory• Database tables

• Subsets of rows and columns

• Fast, consistent response times• High transaction throughput

• Standard SQL interface• Synchronized with Oracle Database

Cached tables

BusinessApplications

Cached tables

BusinessApplications

Direct Link Connection

Automatic Data

Communication

DEMO 2 - New APIs PLSQL

[Demo 2-1] PL/SQL 설치여부확인

• PL/SQL functionality is installed and enabled by default• Option to not install PL/SQL at installation time• Option to disable PL/SQL at database creation time

Yes, PL/SQL is enabled for this database

[Demo2-2]Supported PL/SQL packages in TimesTen 11g

Yes, invoking PL/SQL Package Like Oracle DB

[Demo2-3] Sample PLSQL & Exception Handling using Predefined Exception

SELECT enameINTO emp_nameFROM empWHERE ename like name;

IF emp_name = ‘KING’ THENRAISE test_err;

ELSERETURN emp_name;

End IF;

theEmployee := pack1.getEmpName('MILLER', errCode, errtext);

theEmployee := pack1.getEmpName(‘A%', errCode, errtext);

theEmployee := pack1.getEmpName(‘AAA', errCode, errtext);

theEmployee := pack1.getEmpName(‘KING', errCode, errtext);

EXCEPTIONWHEN NO_DATA_FOUND THEN DBMS_OUTPUT.PUT_LINE ('Exception : NO_DATA_FOUND');errCode := SQLCODE;errText := SUBSTR(SQLERRM, 1, 200); RETURN 'No employee for that employee number';

WHEN TOO_MANY_ROWS THENDBMS_OUTPUT.PUT_LINE ('Exception : TOO_MANY_ROWS');errCode := SQLCODE;errText := SUBSTR(SQLERRM, 1, 200); RETURN 'Non unique name used';

WHEN OTHERS THENDBMS_OUTPUT.PUT_LINE ('Exception : OTHERS');errCode := SQLCODE;errText := SUBSTR(SQLERRM, 1, 200);RETURN ‘No one can query KING’;

pack1.getEmpName

pack1.proc1

[Demo2-3] Sample PLSQL & Exception Handling using Predefined Exception

TimesTen 11g 수행결과

Oracle 11g 수행결과

동일한 예외처리 규정으로 기존의 프로그래밍 기술을 이용하여 개발 생산성 극대화

sqlplus

ttisql

[Demo2-3] TimesTen Predefined Exception for PLSQL

Subset of Oracle

DEMO 2 - New APIs OCI,Pro*C/C++

[Demo 2-4] QuickStart Guide

• TimesTen 11g Sample Code• Identical Pro*C Sample to Oracle Database’s• Dynamic SQL (method 1/2/3/4) supported

TimesTen 11g설치후

Quickstart guide

[Demo 2-4] Pro*C Sample

• TimesTen 11g Sample Code• Identical Pro*C Sample to Oracle Database• Dynamic SQL (method 1/2/3/4) support 오라클 DB와

동일한Pro*C

TimesTen 용으로

Compile & Link

[Demo 2-4] Pro*C Sample

• Pro*C (OCI) application uses TNS alias• A single Pro*C(OCI) application can run both on TimesTen and

Oracle Database.

TimesTen Direct

connection

TimesTen C/Sconnection

Oracleconnection

[Demo 2-4] Pro*C Sample

• Pro*C sample “ansidyn1” uses TNS alias• TimesTen Direct Connection TNS used : sampledb_1121

[Demo 2-4] Pro*C Sample

• Pro*C sample “ansidyn1” uses TNS alias• TimesTen C/S Connection TNS used : sampledbCS_1121

[Demo 2-4] Pro*C Sample

• Pro*C sample “ansidyn1” uses TNS alias• Oracle Connection TNS used : ttorcl

High Availability

What is Oracle Clusterware 11g?

• Oracle Clusterware is portable cluster software• Allows clustering of single servers so they operate as a single

system• Provide required infrastructure for Oracle RAC• Provides HA services for any Oracle application or 3rd party

application within a cluster• Enable protection of any Oracle application or any third party

application within a cluster

• Oracle Clusterware can be used free-of-charge with any licensed Oracle product

• Refer to Oracle Clusterware documentation for detailshttp://www.oracle.com/technology/products/database/clusterware

Integration with Oracle Clusterware• TimesTen product has been enhanced to integrate with

Oracle Clusterware• Manage and monitor TimesTen resources• Enable automatic TimesTen resource failover• Automate the steps required for TimesTen Replication

Active/Standby Pair configuration, failover and recovery operations

• Integration with Oracle Clusterware is built on the TimesTen Replication technology• Enable customers to protect their HA environment without

requiring in-house solution or purchasing cluster software from another vendor

• This integration is free of charge to TimesTen customers

Supported Configurations

SpareNode 1

SpareNode 2

SubscriberStandbyActive

SharedStorage

SpareNode 1

SpareNode 2

SubscriberStandbyActive

SharedStorage

In-MemoryDatabase

Cache

In-MemoryDatabase

Cache

In-MemoryDatabase

Cache

Subscriber node is optional

TimesTen Resources Managed by Oracle Clusterware

• TimesTen Resources • Daemon resources – monitors the main daemon process• Data store resource includes

• Replication agent• Cache agent• Data store is alive and valid

• Failure types monitored by the clusterware• Node failure• Daemon process failure• Database failure• Replication and Cache agent failure• Application failure

Active Node Failure

SpareNode 1

SpareNode 2

SubscriberStandbyActive

SharedStorage

Active node failed

Standby node switched to

Active

Active

Recover the Failed Node

SpareNode 1

SpareNode 2

Subscriber

Standby

SharedStorage

Recovered node is now the new Standby, and

responsible for replicating to the read-

only subscriber

ActiveStandby

Recover failed system or use a predefined spare

node

Dual Nodes Failure

SpareNode 1

SpareNode 2

SubscriberStandbyActive

SharedStorage

Both Active and Standby nodes

failed

Recover the failed system or use a

spare nodeRestore the database

using the Backup database

DEMO 3 –TimesTen Integrated with Oracle Custerware

[Demo 3-1] QuickStart Guide TimesTen 11g설치후

Quickstart guide

[Demo 3-1] Create DB & schema

• Create TimesTen Database & Schema• Datastore : repdb1_1121 (predefined in installation)• Table :

Script : ttisql -f 3-1create.sql repdb1_1121

TimesTen 11g를설치하면 sample demo

DB 로자동으로설정되어있음

[Demo 3-2] Integrating Cluster with TimesTen

• Start TimesTen cluster agent by issuingScript : ttcwadmin -init

Oracle Clusterware 는데모서버 2대

(ttwell01,ttwell02) 의Oracle DB RAC 관련

process 들만을감시하고있음

Oracle Clusterware가TimesTen 관련

Process들을감시할수있도록초기화함

Oracle Clusterware 는데모서버 2대

(ttwell01,ttwell02) 의TimesTen 관련process 들도감시하고있음

[Demo 3-3] Integrating Cluster with TimesTen

• Create Active-Standby Pair Rep. Scheme by issuing Script : ttcwadmin -create -dsn repdb1_1121

Oracle Clusterware 는repdb1_1121 DB에Active-Standby Pair Replication 을정의

Oracle Clusterware 는repdb1_1121 DB를관리하기위해관련서비스를감시대상에

등록

Repdb1_1121 DB 의process들이 Oracle Clusterware 의감시대상으로새롭게

등록됨

[Demo 3-4] Integrating Cluster with TimesTen

• Start Active-Standby Pair Rep. Scheme by issuing Script : ttcwadmin -start -dsn repdb1_1121

Oracle Clusterware 는ttwell02 서버에

Standby Repdb1_1121 DB를자동으로생성하고 Standby 서비스시작

Oracle Clusterwar에의해 ttwell01 서버의Reepdb1_1121 DB는

Active로기동됨.Before Start

After Start

Replication 서비스가자동으로시작되고Active DB의 Data

변경이 Standby 로자동전송됨

[Demo 3-4] Integrating Cluster with TimesTen

• Review Status by issuing Script : ttcwadmin -status -dsn repdb1_1121

Oracle Clusterware에의해감시되고있는 TimesTen

DB들의상태를확인.

한쪽서버에서전체서버의상태확인가능

[Demo 3-5] Integrating Cluster with TimesTen

• Automatic Detecting & Recovery• Kill TimesTen DB Instance in Active • Remove All TimesTen Database files in Active

Oracle Clusterwar에 의해 ttwell01 서버의Reepdb1_1121 DB는 Active로 기동됨.

1,Oracle Clusterwar는 TimesTen의장애상황을자동으로감지하고

Standby TimesTen DB를 Active로자동전환함.

2,이후장애발생한 TimesTen DB를복원한후 Standby 상태기동함.

© 2008 Oracle Corporation – Proprietary and Confidential 50

Summary – Green IT DB platform

컴퓨팅자원최대활용 , 저비용

고성능시스템구축

저비용의자동장애감지/복원시스템구축

기존기술을재활용하여고성능

응용프로그램을쉽게개발

$$$$

Electric Power , CO2

Performance

High Availability

Reusable APIs