sap internet transaction server on linux

8/3/2019 SAP Internet Transaction Server on Linux

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SAP ITS 6.20 on LINUX: Inst a l lat ion,Adm in is t ra t ion, Sec ur i ty , and Tun ing

Arno EsserSAP AG


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SAP AG 2003, PA351, Arno Esser, Page 2

Learning Object ives

As a resu l t o f t h is w ork shop, you w i l l be ab let o :

Understand the concepts of SAP ITS

Install an ITS 6.20 with multiple virtual instances

Configure and loadbalance your ITS landscape

Administer your ITS server

Tune your ITS instances


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Agenda

Introduction1

1

Web Servers & Platform Matrix2

2

SAP ITS Installation3

3

SAP ITS Administration & Configuration4

4

Additional Information5

5


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SAP Sys tem & The Web

Intranet

Browser

Browser

GUI

PC

PC

Internet

Web

Server

Browser

Browser

Browser

ITS

Firewall

SAP System


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SAP Internet Transact ion Server

Ext ends t he reach o f SAP Sys tems in to t he Web

Maps SAP screens to HTML, WML or similar web formats Using web transfer protocol HTTP(S)

Dr ives t ransact ions w i th in t he SAP Syst em or c a l ls

func t ion modu les , BAPIs , e tc . in the backend sys tem

Application Server sees a SAP GUI for Windows

Separat ion o f Bus iness Log ic and V isua l Appearanc e

Dow nward compa t ib le (tow ards ITS and Web Appl i ca t i on

Server re l eases)

ITS 6.20 can be used to access SAP products based on SAP WebApplication Server releases 6.20 and below. ITS 6.10 and 4.6D C4 can

be used to connect to SAP products based on SAP Basis 4.6D andbelow.


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H ow t o of f er a Servi c e on t he We b?

SAP System

Web Server

AGate

Service FilesService descriptionHTML Templates

Language ResourceFiles

Flow Files

SAP ITS

ApplicationABAPDynpro Screens

Customization

Web Browser

Inside SAP SystemBusiness Logic

WGate

MIME FilesImagesStylesheets

JavascriptsMultimedia

ABAP

Workbench

Outside SAP SystemHTML Visualization

SAP@WebStudio or

ABAP

Workbench

SAP@WebStudio or

ABAP

Workbench


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SAP Internet

Application Component

BAPI

SAP Data

SAP System

ITS Arch i tec t u re Deta i l s

Browser

WGate

Web Server

User Request

User RequestSend Prepared

Request

Send PreparedRequest

Input

Input

Output

Output

HTML Page

HTML Page

Call WGate

Call WGate

LoadService File

LoadService File

HTMLTemplates

HTML Pag

e

HTML Page

AGate

LoadHTML Templates / Flow Files

LoadHTML Templates / Flow Files

FlowFiles

ServiceFiles


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Agenda

Introduction11






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Web Server software

Listens on a specific TCP port for requests Replies to HTTP requests from HTTP clients

Can only send data after receiving a request

Sends request

Replies with data

Web Server

Web Browser Web Server


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Software used to access the Internet

Requests data from a specific port of a specific Web Server(client/server structure)

Presents the information received (such as text and pictures)

Sends data to the Web Server

Web Server

Web Brow sers

Web Browser

Sends data

Receives data


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ITS 6.20 Server Plat form s

AGate

Microsoft Windows 2000 Server

Microsoft Windows 2003 Server

SUSE Linux Enterprise Server 8

RedHat Enterprise Linux 2.1 ES/AS

SAP@Web Studio

Microsoft Windows 2000 Workstation

WGate

Microsoft Windows 2000 and 2003Server Microsoft Web Server (ISAPI)

Apache HTTP Server (Apache Module)

SUN One Web Server (NSAPI)

Solaris SUN One Web Server

Linux / IntelSUSE Linux Enterprise Server 8

Apache HTTP Server (Apache Module)

RedHat Enterprise Linux 2.1 ES/ASApache HTTP Server (Apache Module)


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Vir t ual Web Servers

On a single computer, multiple Web Servers (so-called virtual WebServers) can be installed without having to repeat the entire installation

process.

A request to a host with multiple virtual Web Servers installed isdirected to the correct virtual Web Server by differentiating by

IP address (each virtual Web Server may have its own IP address)

Port number (each virtual Web Server may listen on a different port)

Responses are either generated dynamically or are taken from apredefined directory structure belonging to the Web Server

This structure usually is created before the Web Server itself is set up.

The default Apache file directory is /srv/www/htdocs.

If you dont specify a file to be accessed the Web Server may return adefault document.

Each virtual Web Server should have its own directory structure This is necessary to install multiple SAP ITS instances with different

application contents on the same computer


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Apache Web Server Direc t ory St ruct ure

/srv (default web area)

/www (default web root directory) /ftp (default ftp root directory)

Example: Root directories for virtual Web Servers

/srv /www/WEBGUI (Web area for SAP ITS WEBGUI)

/www/ADM (Web area for SAP ITS ADM)


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Agenda

Introduction11






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SAP ITS Instal la t ion

You can get the installation files from The Server Components CD (directory ITS/UNIX/LINUXINTEL).

http://service.sap.com/patches web site for the latest patches.

The setup program is based on SAPInst Installation tool whichprovides Easy user friendly dialogs

A scripting interface for installations without user interaction

The chance to continue a failed installation after resolving the causeof the problem

Simplified update process for ITS servers (only one installation forall instances)

Installation tool known from SAP WebAS

SAP@Web Installation Guide

Detailed step by step instructions and matrix of necessaryparameters

Print and read these instructions before starting an installation
http://service.sap.com/patcheshttp://service.sap.com/patches


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SAP ITS Inst al lat ion Requirem ent s

Windows 2000 Server (not Professional)

Running on an Intel or compatible processor

Recommended minimum Service Pack 3

Windows 2003 Server

Running on an Intel or compatible processor (32-bit)

Linux Server

Running on an Intel or compatible processor (32-bit)

SUSE Linux Enterprise Server 8 (SLES8)

Red Hat Enterprise Linux 2.1 (AS/ES)

A minimum of 256 MB physical memory is recommended(productive installations may require a lot more than this).

1GB Hard Drive space will suffice for several SAP ITSinstallations.


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SAP ITS Inst al lat ion Param et ers

Landscape - Type of installation

Single Host

Dual Host (Recommended for Security and Scalability)

AGate installed on one host

WGate installed on another host together with the Web Server

SAP ITS installation type Typical or Administration

Typical installations can run SAP GUI for HTML and other applications

Administration installations exclusively run ITS Administration

(virtual) Web Server to connect the SAP ITS to

Application packages (IAC packages) to be installed

SAP System Connection information and Logon Data (optionally)


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WebWeb

ServerServer

SAPSAP

ApplicationApplication

ServerServerITSITS

WGate

AGate

TCP/IPTCP/IP

Windows 2000 ServerWindows 2003 Server 32-bitSUSE Linux Enterprise Server 8RedHat Enterprise Linux 2.1

RFCRFC

DIAGDIAG

NSAPINSAPI

APACHEAPACHE

ISAPIISAPI

HTTPHTTP

HTTPSHTTPS

Single Host Ins ta l la t ion


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WebWeb

ServerServer

SAPSAP

ApplicationApplication

ServerServerITSITS

W

Gate

AGate

RFCRFC

DIAGDIAG

TCP/IPTCP/IP

HTTPHTTP

HTTPSHTTPSNSAPINSAPI

APACHEAPACHE

ISAPIISAPI

Wgate & Agate OS platforms:

Windows 2000 ServerWindows 2003 Server 32-bitSUSE Linux Enterprise Server 8RedHat Enterprise Linux 2.1

Dual Host Ins t a l la t ion


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These security measures are strongly recommended for productiveinstallations. The firewall between AGate and WGate is only possible in DualHost mode!

WebWebServerServer

SAPSAPApplicationApplication

ServerServer

W

Gate

AGate

SAPRouterSNC, (SAPRouter possible)

Secur i t y Addi t iona l Pro tec t ion

NSAPINSAPI

APACHEAPACHE

ISAPIISAPI

Firewalls

DIAGDIAG

RFCRFC

TCP/IPTCP/IPHTTPSHTTPS


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ITSITS

11

WGate

VirtVirt. Web. Web

ServerServer

ITSITS

22

WGate

VirtVirt. Web. WebServerServer

AGate

AGate

With a certain number of virtualWeb Servers installed, you cancreate the same number of SAPITS environments on a singlehost.

Several ITS installations (alsocalled virtual instances) canoperate independently on thesame server.

TCP/IPTCP/IP

TCP/IPTCP/IP

Vir tua l ins tances

NSAPINSAPI

APACHEAPACHE

ISAPIISAPI

NSAPINSAPI

APACHEAPACHE

ISAPIISAPI

One physical server


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SAP ITS Instal la t ion

On the following pages you can find screenshots from aninstallation of a SAP ITS 6.20 (patch level 4)

Different SAP ITS versions have different screens

A Dual Host Installation requires more information (e.g. the name ofthe server the AGate is installed on)

The required information is almost identical for all ITS versions.Therefore the installation concepts basically are the same for all

releases. ITS 6.20 uses SAPInst, the new SAP Web ApplicationServer installation tool.

SAPInst consists of an installation engine and a JAVA based GUI.It allows remote installation of servers without a graphical windowsystem where the engine runs on the server and the GUI on a

desktop workstation. SAPInst supports unattended installations.

Engine and GUI can run on different operating systems.


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Prepar ing t he SAP ITS Inst al lat ion

To begin the installation change to rootdirectory of the ITS installation, e.g.

/usr/sap/its, and extract the patch file.Jump to a clean temporary installationdirectory, e.g. /usr/sap/its/install, andstart the installation with/usr/sap/its/ITS/UNIX/LINUX/INSTALL.

To setup SAPInstinstallation toolplease confirm alldialogs. The ITSinstallation willstart automatically

after SAPInst hasbeen successfullyinstalled


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SAP ITS 6.20 Inst al lat ion

The installation of ITS on LINUXneeds to know the installationdirectory. Accept the default

here and click Next.Please accept following licenseagreement.

All files and directories ofthe ITS installation belongs

to the user itsadm. If it doesnot exist the installationcreates it automatically.


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If you already have installed one or more ITS instances on your serveryou will get this screen instead of the one on the previous slide.

Here you candecide whetherto install anadditional ITSinstance or torefresh the

installation(e.g. to repaira corruptedinstallationor to applya patch).


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System number

Uniquely identifysystem resources

Unique numberfor IACOR,wgateand per instance

No alignmentwith already

installedR3-system

Cleanipc perinstance possible

Tooltips

Context sensitive help for input fields


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Type of installation

Basic choice ofinstance usage

Port definition

Avoid confusionwith networkbased mgmt,

e.g. YP, NIS Doesnt override

definitions

No influence onsapms*, sapiacor*

Define ports

sapdp[00-99] to 3200 - 3299 sapgw[00-99] to 3300 - 3399



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Development Env.

Change someregistry keys, e.g.StaticTemplates,AdminEnabled

Reduces resourceconsumption

Streamline Set default in

global.srvc

Not supportedon linux clients yet

Templates and mimes are always installed

Additional dialogs

Ease up installation for seldom used options



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Location

Linux specific

Several installationsare possible

Apache 1.3 and2.0 can be installedin parallel

Several subversions

of 1.3/2.0 can beinstalled in parallel

Standard locationsare:

SLES8, Apache 1.3.26: /usr/sbin/httpd; /etc/httpd

SuSE8.1,Apache 2.0.40: /usr/sbin/apache2; /etc/apache2


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Virtualhost list

List is extracted fromhttpd.conf

Port- / hostbased confi-guration supported


Portbased:Listen 1080

Listen 8080

DocumentRoot /srv/www/its/1080

DocumentRoot /srv/www/its/8080

Hostbased:Listen 80

NameVirtualHost www.xxx.yyy.zzz

DocumentRoot /srv/www/hostname1

DocumentRoot /srv/www/hostname2


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Select connection mode Message Server and confirm the connection

data as shown on the screenshot by pressing click Next. Type in PUBLIC as Login Group and click 'Next'.


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SAP ITS 6.20 Inst a l lat i on

Select 'YES' to start ITS instance after installation and click 'Next'.


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Check installationoverview page and

click 'Start'.


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SAPInst now starts the installation process and finishes if nothing wentwrong with the upper success dialog. Click Ok.


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Start

Agate,iacor:

For each instance including iacor a scripts is created in/bin.

The scripts are named its.sh

The scripts should be link in runlevel directory, e.g. /etc/init.d/rc3.d

Wgate:

export LD_LIBRARY_PATH=/programs

Start apache

Test

Set registry key StatusMonitorEnabled in ItsRegistryWGATE.xml andrequest wgate status withhttp://:/scripts/wgate/wgate-status?

Test wgate-agate communication withhttp://:/scripts/wgate/itsping/!


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Remark : Upgrade of an o lder ITS ins ta l la t ion

Upgrade support:

4.6D/6.10 to 6.20

6.20 does notshare registrykeys or otherresources witholder installationwith 1 exception

Information fromexisting instancesis used to setupa new installationin parallel

Old installation is not manipulated in any way, e.g. services are notdisabled

The webserver points to the new installation after upgrade


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Unat t ended ins ta l la t ion

Features

Script-based

Fully automatic installation without user interaction, e.g. ports aredetermined automatically

Provides the same functionality as manual gui-based installation, i.e.single/dual host, admin/non-admin, additional packages etc.

No GUI capabilities are required, no JAVA

Any number of instances with individual installation types can beperformed through one call

Repeating an installation

Repeating a previously successfully executed installationunattended

Part of a backup scenario

Not customizable

See note 526835


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Restar t o f the ins ta l la t ion

Normal installation

SAPinst require reinitialization after a successfull or broken

installation before next start

W32 program menu:

Start: SAPinst Server with GUI

Reinit: Prepare new installation

W32 command line in installation directory, e.g. C:\SAPinst ITS 620:

Start: sapinst.exe

Reinit: newinstall.cmd

Linux command line in installation directory, e.g. /usr/sap/its/install:

Start: ./sapinst

Reinit: ./newinstall


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Procedure

Steps:

Create example .ini file with:sapinst SAPINST_SMART_COMPONENT=ITS_BATCH_PROCESSING

SAPINST_SMART_CONFIGFILE=ITS_PARAMETER.ini

The normal installation starts. Abort it on first welcome screen. Anexemplary file with comments has been created.

Edit ITS_PARAMETER.ini to meet your requirements

Restart unattended installation with:

sapinst SAPINST_SMART_COMPONENT=ITS_BATCH_PROCESSINGSAPINST_SMART_CONFIGFILE=ITS_PARAMETER.ini

SAPINST_SKIP_DIALOGS=true


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Example

[ITS_MAIN]ACTIONS= INSTALLINSTANCE_IT1

[INSTALL]PROGRAM_DIRECTORY=/usr/sap/its/6.20

[INSTANCE_IT1]ADMIN_INSTANCE=falseTYPE=*

NAME=IT1DEVELOPER_MODE=trueSYSTEM_NUMBER=41

WEBGUI=trueFLOW_DEBUG=falseAPPLY_ADDITIONAL_PACKAGES=falseWATCHDOG=falseSAP_SYSTEM_NAME=BCEUSE_ANOYMOUSLOGIN=false

MESSAGE_SERVER=bcemain.wdf.sap.corpSTART_AFTER_INSTALLATION=trueRUN_MULTIPLE_AGATE_PROCESSES=false

WEBSERVER_INSTANCE=Apache (virtual host: _default_:1080)

APACHE_CONFIG_DIRECTORY=/etc/httpdAPACHE_EXECUTABLE=/usr/sbin/httpd


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Ex e rc i se 1

Install a typical SingleHost SAP ITS instance to port 1080:

Use SAP System data provided during class.

Use the Development Configuration.

Check with url 'http://basel03:1080/scripts/wgate/webgui_start/!

Install an administrative instance to port 8080

Notice the differences in the installation dialog.

Check with url 'http://basel03:8080/scripts/wgate/admin/!

Install a second 'typical' instance unattended: Copy ITS_PARAMETER.ini from /archive to /usr/sap/its/install

Start unattended installation as described during class

Check with url 'http://basel03:1082/scripts/wgate/webgui_start/!

Note: Before you can check the ITS connection, apache has to be restartetand LD_LIBRARY_PATH has to be set once:

export LD_LIBRARY_PATH=/usr/sap/its/6.20/programs

Restart apache with the command: "rcapache restart"


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SAP ITS Sca lab i l i t y

SAP ITS offers several Scalability and Load Balancing options:

Scale up the Web Server infrastructure

Scale up the number of AGate servers / AGate processes

Use Load Balancing via SAP Messageserver

Use SAP ITS Load Balancing

Make use of an HTTP Router

Use more than one AGate process


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Web Server / SAP ITS Sc alabi l i t y

One AGate can be connected to several Web Servers/WGates

Web ServerWeb Browser

Web Browser

SAP System

WGate

Web Server

WGate

AGate


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SAP ITS - SAP System Sca lab i l i t y

One SAP ITS can use several Application Servers of one SAPSystem via:Load BalancingSeparate selection of a specific Application Server

SAP System

Web Browser

MessageServer

Appl.Server

Web Server

WGate AGate


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SAP ITS Load Bal anc ing

WGate passes prepared requests on to AGate AGate does the actual work

Session management HTML page generation

CPU utilization of AGate is much higher than WGates This scenario offers additional fault tolerance for AGate

SAP System

Web BrowserWeb Server

WGate

AGate

AGate

AGate


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HTTP Router

HTTP Rout ing / High Avai l abi l i t y

Web Browser

Web Server

WGate

Web Server

WGate

AGate

AGate

AGate

This scenario offers additional fault tolerance for both AGate and WGate

When HTTPS is used the load on the WGate server can be fairly high


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Mult ip le AGate processes

The load is distributed between the AGate processes

It is always useful to have several Agate processes per instance due tofailover, locking and the 2GB memory limit per process

Web BrowserWeb Server

WGate

SAP ITS AGate

MappingManager

AGateprocesses


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Wgate Conf igura t ion Too l

Configuration tool to completely administrate Wgate

Add new URL section

Setup connection to multiple agates

No need to restart your web server (in most cases)

Connectivity test to Agate and Mapping manager available

SNC version displayed

SNC environment displayed

After activating no need to edit ItsRegistryWGate/Wgate.conf byhand

Changing of Wgate trace level without web server restart


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Wgate c onf igurat ion too l : Ac t iva t ion

Edit ItsRegistryWgate.xml with you favorite editor and changeConfigMonitorEnabled in global section to yes


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Wgate conf igura t ion t oo l

URL Section

LogicalInstances

Global Parameters

Activation/Reload


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Make sure you stay in the same webserver process (loadbalancing)

Switch off (or overtake) reverse-proxies, loadbalancers

Start web servers as single process e.g.:/usr/sbin/httpd X

The tool manipulates registry files ItsRegistryWGATE.xml in configdirectory. Make them writeable for the low-priviliged apache user, i.e.wwwrun. Proposal: switch to itsadm in httpd.conf temporarily.

Switch off the tool after configuring Wgate, otherwise your Wgate will beopen to anyone for configuring

Wgate Conf igura t ion Tool Dos and Dont s


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Wgate Stat us Moni tor

Status Monitor:

Provides statistical

information about ITSinstances

Enabled by setting the keyStatusMonitorEnabled inItsRegistryWGATE.xml

Start with

http://:/scripts/wgate/wgate-status?


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Ex erc ise 2

Enable the Wgate Config tool. Open the ItsRegistryWgate.xml withthe editor of your choice. Search for the Global Section and change

the value for ConfigMonitorStatus from no to yes. Restart the Webserver instance.

Start the Wgate Configuration Tool using URL:http://localhost:1080/scripts/wgate/wgate-config?

Create a second AGate section for instance WEBGUI that points tothe DEMO instance (result of the unattended installation).

Start the SAP GUI for HTML and try to find out which SAP ITS AGateserver you are connected to.


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IACOR Insta l l a t i on & Conf igurat ion

IACOR (IAC Object Receiver)

Windows/Linux based tool that was designed to allow publishing

IAC contents from a SAP System to a virtual SAP ITS instance

Registers SAP ITS instances at a gateway of the SAP System(release 4.6C or higher) and waits for files to receive

The publication process can be started from transactions SE80 (WebApplication Builder) and SE38 in the SAP System

From SAP System release 6.10 on, IACOR can also be used to

publish IAC files to SAP ITS landscapes in addition to single SAP ITSinstances


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IACOR Setup

IACOR demon:

Is installed as a services automatically during initial setup

Can be started via

W32: ServiceManager

LINUX: "Installation directory"/bin/itsIACOR.sh start|stop

Connections can be managed with iacorcmd, e.g:

./iacorcmd add \/itsname:DEMO \

/gwhost:"" \/gwservice:"" \/desturlits:"/usr/sap/its/6.20/DEMO" \/desturlwww:"/srv/www/its/1082/sap/its/mimes" \/r3name:BCE \/group:PUBLIC \/msgsrv:"bcemain.wdf.sap.corp" \/client:"000" \/r3user: \/r3password:


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Using IACOR

To publish IAC files to your SAPITS instance start the SAP GUIfor HTML, launch transaction

SE38 and execute the programW3_Publish_Services.

Skip the screen askingfor a transport requestby clicking onExecute. Afterselecting the IACs tobe published click onWorkbench settingsto choose the ITSinstance to receive thefiles.


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Usi ng IACOR

Select the SAP ITS instance named/ and click the button with the

green tick to return toW3_Publish_Services. Start theprocess by clicking the Publishbutton.


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Agenda

Introduction11






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SAP ITS Adminis t rat ion and Moni t or ing

SAP ITS Administration is an HTML based Administration andMonitoring tool that can be remotely accessed via Web.

Flexible configuration and administration tool designed for

Changing SAP ITS settings

Monitoring SAP ITS performance data

Editing service files

Viewing template files

Viewing SAP ITS log files and trace files Tuning your ITS server

Dedicated to and optimized for SAP ITS

Control SAP ITS instances (Start, Stop and Restart)

Control Web Server instances (Start, Stop and Restart)

Installed on a separate virtual SAP ITS instance.

SAP ITS Ad i i t t i L i


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SAP ITS Adm inist rat ion: Login

Default Login: itsadminPassword: init

URL request for login:http://:/scripts/wgate/admin/!

You can access all features ofITS Administration by usingthe menu on the left handside. Note that there is oneentry for each ITS instance.

SAP ITS Ad i i t t i U Ad i i t t i


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SAP ITS Adm inis t rat ion: User Adm inis t rat ion

To change the password for the currentuser select Administration followedby Change Password.

If you want to create SAP ITSAdministration users withlimited privileges you can do so

via Administration

UserManagement. An Administratorcan, e.g. change service fileparameters, restart and stopinstances, while View Onlyusers cannot change settings orrestart the SAP ITS. Modifying

registry settings except forperformance settings isrestricted to the user itsadmin.

SAP ITS Ad i i t t i S t V i & O i


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SAP ITS Adminis t rat ion: System View & Overv iew

Under System View you can finddata on the resources of the hostcomputer (active processes,

allocated memory, free disk space).

On the Load Balancing screenthe current load balancingsituation of all instances can beobserved.

SAP ITS Ad i i t t i M i R t I t


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SAP ITS Adminis t rat ion: Managing Rem ot e Ins t ances

The full set of SAP ITS Administration features is available for local SAP ITSinstances only while for remote instances you can access the performanceanalysis commands. However there is a command (Go to Native ADM) that

lets you switch to a remote Administration instance, so you can convenientlyadminister all SAP ITS servers.

SAP ITS Ad i i t t i S i Fi l


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SAP ITS Adm inist rat ion: Servic e Fi les

Configuration Global Services All Settings will give you a list ofglobal configuration parameters for

the instance you selected.

The configuration of otherIACs (Internet ApplicationComponents) can be

changed withConfiguration Services.

You can change the setting ofany parameter by modifyingits value in the correspondingedit field and clicking SAVE.This kind of change is appliedinstantly .

SAP ITS T ning Parame t ers


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SAP ITS Tuning Parame t ers

These tuning parameters can be set in service files:

~http_use_compression Enables / Disables HTTP compression

between SAP ITS and Web Browser. Activating this feature reducesthe amount of data sent to the Web Browser thus reducing overallnetwork traffic.

~timeout This parameter specifies the time in minutes after whichan idle user session is terminated. Tuning this parameter will help insituations where large numbers of sessions are blocked because of

users not logging off but either closing the Web Browser or beingidle.

Changes to these parameters take effect immediately, but alreadyestablished sessions are not affected.

SAP ITS Adminis t rat ion: Per formanc e Set t ings


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SAP ITS Adminis t rat ion: Per formanc e Set t ings

The most important settings regarding SAP ITS performance canbe accessed by selecting Configuration Performance.It is often sufficientto modify one ormore of these settingsif you want to adjustyour SAP ITS accor-

ding to your needs.Remember that aftersaving your changesyou have to restartthe SAP ITS instancein order to apply them.



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MaxSessions Maximum number of sessions the SAP ITS instance cansupport in parallel

MinWorkThreads The number of Workthreads created by the SAP ITSinstance at startup

MaxWorkThreads Maximum number of Workthreads supported by theinstance (the ITS will start with MinWorkThreads and increase thisnumber up to a maximum of MaxWorkThreads in case of high load westrongly recommend to set MinWorkThreads = MaxWorkThreads).

StaticTemplates When this parameter is set to 1 (default) the SAP ITSwill cache all HTML templates used by SAP ITS applications thusimproving performance. In development environments this parametershould always be set to 0.

ProductionMode Enables caching of data in applications based on SAPITS Flow Logic. This performance setting improves the speed of module

calls considerably, but should not be turned on during development ofapplications based on Flow Logic

SAP ITS Memory Conf igurat ion


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SAP ITS Memory Conf igurat ion

ITSSetup offers two standard configurations in respect to themaximum amount of memory used by the SAP ITS instance.

These two configurations differ in the number of Workthreads andSessions launched upon start:

Default

400 Sessions

40 Workthreads

Development Mode

64 Sessions

4 Workthreads

Work t hread/Session Model


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Pool ofWorkthreads Session Pool

Dispatcher

In Port

AGate

Work t hread/Session Model

SAP System

In ternal Scalabi l i t y (AGate)


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In ternal Scalabi l i t y (AGate)

Increasing the number of Workthreads will result in

Higher throughput of your SAP ITS instance

A rise in memory consumption as well as processor utilization

Increasing the number of Sessions will result in

The SAP ITS being capable of serving more users at the same time(as long as the number of Workthreads is sufficient)

A rise in memory consumption

If you increase the number of Workthreads and/or Sessions you shouldalways make sure that your server can take the new load. An alternativeis to increase the number of Workthreads/Sessions by setting up morethan one SAP ITS Server and using ITS Load Balancing.

It is always useful to have several Agate processes per instance due tofailover, locking and memory limit per process

SAP ITS Logs and Trac e Files


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SAP ITS Logs and Trac e Fi les

The most important logs and trace files:

access.log: In this file the SAP ITS records whenever an SAP ITS

session is started or ended (by timeout or the user logging off). performance.log: This file (and loadstat.log) is used to store basic

information on SAP ITS performance as well as the hostsperformance. The SAP ITS can be tuned according to the numbersdetailing the unused sessions and workthreads.

AGateX_*.trc: All information messages, warnings and errorsgenerated by the component AGate are written to these files.

Wgate*.trc: These files resides on the Web Server host and areespecially useful when communication problems prevent theWGate from connecting to the AGate for some unknown reason.

SAP ITS Adminis t rat ion: V iew ing Log & Trace Fi les


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SAP ITS Adminis t rat ion: V iew ing Log & Trace F i les

Click WEBGUI View Logs Logs totake a look at the log files for the WEBGUIinstance. The traces can be accessed via

Traces.Analyzing the log files will help you tuningSAP ITS. If e.g. the number of workthreadsor sessions runs low for a longer period oftime you should consider increasing thevalues of these parameters.

SAP ITS Adm inist rat ion: Set t ing Trac e Fi le


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Parameters

Use Configuration Tracesto alter the settings for SAP ITStrace files (likewise for log

files).

With ITS 6.20 it is no longer

necessary to restart the instanceafter changing trace level.

SAP ITS Adminis t rat ion: Per formanc e Moni t or ing


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SAP ITS Adminis t rat ion: Per formanc e Moni t or ing

Select Configuration Registry tochange the SAP ITS registry settings.In this example we choose CCMS in

the frame on the right to have the SAPITS performance monitoringparameters displayed.

To activate the advancedperformance monitoringclick PerfMonitoring and

enter the value 1. Alsoactive the MemoryTuningby setting PerfMemTuneto 1. Again you will haveto restart the SAP ITS aftersaving, but of course youdont have to restart once

for every single change,one restart after allchanges have been madeis enough.

SAP ITS 6 20 Tuning: Per formanc e Moni tor ing


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SAP ITS 6.20 Tuning: Per formanc e Moni tor ing

If you suspect a performance bottleneck in your system (consisting ofWeb Browser, SAP ITS and SAP System), but are not quite sure which

component is responsible for the bottleneck, you can get an impressionwhere the processing timeis spent by selectingPerformance -> ThreadPerformance for the SAPITS instance in question.

In this example the proces-sing time was equally sharedbetween SAP System andSAP ITS.

SAP ITS 6 20 Tunin g: Mem ory Tuning Tool


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SAP ITS 6.20 Tunin g: Mem ory Tuning Tool

If you want to optimize the memory requirements of your ITS installation you can usePerformance Memory Tuning for any given ITS instance. The memory tuning tool

can be used to find out how much memory your current configuration would consume

under worst conditions. This value should always be below the OS-specific limit, e.g.4GB for linux.You can experimentwith the parameters

without changing theITS settings and inconjunction with

the performanceanalysis you canpossibly reducethe memoryrequirements.

Ex erc ise 3


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Ex erc ise 3

Start SAP ITS Administration with the URL http://:8080/scripts/wgate/admin/!.

Change the value of the ~timeout parameter in the global service fileof your WEBGUI SAP ITS instance.

Change the number of sessions on your WEBGUI instance.

Change the number of workthreads on your WEBGUI instance.

Explore!

Agenda


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Agenda

Introduction11






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Fur t her Informat ion Publ ic Web:

http://service.sap.com/sap-its

SAPNet:Use ALIAS: sap-its

Re la ted Lec tu res a t TechEd 2003Future of ITS, PA104, TUE 5:00 pm, L4

UI Clients for SAP NetWeaver, UI101, THU

10:00am+THU 8:00am, L1

L i te ra tu reSAP@Web Installation Guide

SAP ITS Tuning & Troubleshooting Guide

SAP ITS Administration GuideSAP ITS Service Parameters

SAP Techno logy:W b A l i t i D l t C i l
http://service.sap.com/sap-itshttp://service.sap.com/sap-its


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Web App l i ca t ion Deve lopment Cur ri cu lum

SAPTECmySAP Techno logy

Solut ion Overview

2 days

ITS070SAP ITS:Admin is t ra t ion

3 days

ITS150SAP ITS:

Corporate Ident i t y

Design

2days

NET050Web Appl ica t ionDevelopment :Foundat ions

3 daysHTML, CSSKnow ledge ,In ternetTermino logy

BC400ABAP Workbench:

Founda t ion andConcepts

5 days

NET100SAP ITS:Deve lop ing Screenbased I n t e rne tAppl ica t ion Comp.

3 days

NET200SAP Web Appl icat ion

Server:

Deve lop ing WebAppl ica t ions

3days

Necessary

Quest ions?


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Q& AQ

Feedback


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Please complete your session evaluationand drop it in the box on your way out.

Be courteous deposit your trash,

and do not take the handouts for thefollowing session.

The SAP TechEd 03 Basel Team

Copyrigh t 2 003 SAP AG. All Right s Reserv ed


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No part of this publication may be reproduced or transmitted in any form or for any purpose without the expresspermission of SAP AG. The information contained herein may be changed without prior notice.

Some software products marketed by SAP AG and its distributors contain proprietary software components of othersoftware vendors.

Microsoft, WINDOWS, NT, EXCEL, Word, PowerPointand SQL Serverare registered trademarks ofMicrosoft Corporation.

IBM, DB2, DB2 Universal Database, OS/2, Parallel Sysplex, MVS/ESA, AIX, S/390, AS/400, OS/390,OS/400, iSeries, pSeries, xSeries, zSeries, z/OS, AFP, Intelligent Miner, WebSphere, Netfinity, Tivoli, Informixand InformixDynamic ServerTM are trademarks of IBM Corporation in USA and/or other countries.

ORACLE is a registered trademark of ORACLE Corporation.

UNIX, X/Open, OSF/1, and Motifare registered trademarks of the Open Group.

Citrix

, the Citrix logo, ICA

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, MetaFrame

, WinFrame

, VideoFrame

, MultiWin

andother Citrix product names referenced herein are trademarks of Citrix Systems, Inc.

HTML, DHTML, XML, XHTML are trademarks or registered trademarks of W3C, World Wide Web Consortium,Massachusetts Institute of Technology.

JAVAis a registered trademark of Sun Microsystems, Inc.

JAVASCRIPT is a registered trademark of Sun Microsystems, Inc., used under license for technology invented

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MarketSet and Enterprise Buyer are jointly owned trademarks of SAP AG and Commerce One.

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Weitergabe und Vervielfltigung dieser Publikation oder von Teilen daraus sind, zu welchem Zweck und in welcherForm auch immer, ohne die aus-drckliche schriftliche Genehmigung durch SAP AG nicht gestattet. In dieserPublikation enthaltene Informationen knnen ohne vorherige Ankn-digung gendert werden.

Die von SAP AG oder deren Vertriebsfirmen angebotenen Softwareprodukte knnen Softwarekomponenten auch

anderer Softwarehersteller enthalten.

Microsoft, WINDOWS, NT, EXCEL, Word, PowerPointund SQL Serversind eingetragene Marken derMicrosoft Corporation.

IBM, DB2, DB2 Universal Database, OS/2, Parallel Sysplex, MVS/ESA, AIX, S/390, AS/400, OS/390,OS/400, iSeries, pSeries, xSeries, zSeries, z/OS, AFP, Intelligent Miner, WebSphere, Netfinity, Tivoli, Informixund InformixDynamic ServerTM sind Marken der IBM Corporation in den USA und/oder anderen Lndern.

ORACLE ist eine eingetragene Marke der ORACLE Corporation.

UNIX, X/Open, OSF/1und Motifsind eingetragene Marken der Open Group.

Citrix, das Citrix-Logo, ICA, Program Neighborhood, MetaFrame, WinFrame, VideoFrame, MultiWinundandere hier erwhnte Namen von Citrix-Produkten sind Marken von Citrix Systems, Inc.

HTML, DHTML, XML, XHTML sind Marken oder eingetragene Marken des W3C, World Wide Web Consortium,Massachusetts Institute of Technology.

JAVA ist eine eingetragene Marke der Sun Microsystems, Inc.

JAVASCRIPT ist eine eingetragene Marke der Sun Microsystems, Inc., verwendet unter der Lizenz der vonNetscape entwickelten und implementierten Technologie.

MarketSet und Enterprise Buyer sind gemeinsame Marken von SAP AG und Commerce One.

SAP, R/3, mySAP, mySAP.com, xApps, xApp und weitere im Text erwhnte SAP-Produkte und Dienstleistungen

sowie die entsprechenden Logos sind Marken oder eingetragene Marken der SAP AG in Deutschland und anderenLndern weltweit. Alle anderen Namen von Produkten und Dienstleistungen sind Marken der jeweiligen Firmen.

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