If the database is not started then start the database and look into the log files alert<SID>.log which resides in saptrace\ background directory

Oracle\SID\saptrace\background

Identify for Oracle errors that start with "ORA"

Example 1033 .... DB_Connect Issues. i.e. The work process is unable to connect to the database.

Check the connectivity, listener status, listener.log, listener ports, listener hostnames, database startup statuses etc.

cmd> lsnrctl

07-Jul-09 BASIS Recently SAP -- Manufact uring -- Retail Applicati on Server - Allocates Processes - Accelerates the requests INSTANCE - It's an Agent - Communicates

with Database with the

Native SQL - Dispatcher

As the load goes on increases we will go with adding a Dialogue Instance

Accessing the BASIS repository over the web... and for this SAP Implemented a component called ITS (Internet Transaction Server) separate tool windows specific. IIS (Microsoft internet information service)

SAPWAS: SAP WEB APPLICATION SERVER which is capable of providing internet Including ICM 6.0 (Service) will handle the user request.

ABAP

BASIS into a common supply chain/ Platform BW

The integrated ITS uses the common HTTP mechanism as in SAP Web AS, no additional Web server is required as, in the case of the standalone ITS.

08-Jul-09 BASIS

- It provides the runtime environment for all SAP Components.

- It provides a platform for User Management, Administration, Monitoring, Analysis, performance, tracing, auditing and development.

SU01 - User Management

SM21 - Administration (System Logs)

RZ20 - Monitoring (CCMS) Computing Center Management System SM20 - Security Audit

ST03 - Work Load Monitor ST01 - System Trace

SECR - Audit Information System SE38 - ABAP Editor

There are various BASIS platforms for R/3

APO (Advanced Planner and Optimizer), - Sub Module of SCM BIW (Business Intelligence Warehouse),

EBP (Enterprise Buyer Professional) etc., - Sub Module of SRM

All these applications are robust, reliable, stable, and consistent which are built on ABAP language. LANGUAGE ***************************

SINGLE CODE PAGE: The database is installed on a code page like 1100 which can support the like minded languages around 10 (En, German, Dutch...) but each additional languages should be imported. SMLT

Languages like Chinese, Thai, Korean, and Japanese cannot be accessed using the above code page, due to this reason we need multicode page (MDMP - Multi Display Multiple Language) on the same system.

MDMP has various disadvantages during upgrade i.e., code page conversion. From SAPWEBAS 640 SAP provides only two versions (Non-Unicode and Unicode). SAP Stopped supporting blended (Multi) code pages i.e., MDMP and introduced UNICODE to support all the languages i.e., the characters are stored in more than one byte.

Refer TCPDP table and I18N

NON-UNICODE: It is similar to single code page and supports only the like minded languages.

When there are no plans to expand the business globally this is the best option. In future we can perform a UNICODE Migration. (NON UNICODE to UNICODE)

Process: UNICODE Migration

1. Ensure that the version is Unicode enabled like ECC6.0, BI7.0, and CRM2005 etc, 2. Use SAP Installation Master DVD

- TASKS - System copy - Source system - export NUC

3. Target system System -> Import with Unicode Kernel. Note: We need to perform certain pre post steps.

Unicode consumes 40% of additional resources than NUC. Refer UCMIGR... Upgrade - 4.6c to ECC6.0

Migration - NUC to Unicode.

Note: As the Kernel is going to be changed during migration the whole database needs to be deleted. ****************************

ITS: Internet Transaction Server

In order to provide the web functionality to all SAP components ITS (Internet Transaction Server) is introduced by SAP.

ITS installed on a separate machine or Application server to handle the web requests. In the earlier scenarios APPS Dispatcher used to handle the user request but in web scenario the HTTP requests are handled by ITS.

ITS consists of two gates (WEB Gate and APPLICATION Gate) Process Flow:

1. The web requests are received by Wgate which are in the form of .HTML or .CSS (Cascading Style Sheets).

Diag is a protocol that is used to handle the request coming from SAPGUI on port 3200 Series 3200 + Instance Number

3. Agate converts web request into Dynpro specific requests so that they can be handled by Diag Protocol.

4. The Dispatcher in the Application server handles the request and process it. 5. Response is forwarded to Agate.

Time Consuming

Not an Integrated Service

It depends on IIS (Internet Information Server) to host the pages Non Business

User input -> Queue -> Assign a Counter -> Screen -> Withdrawal -> Insert, Update or delete. Instead of ITS SAP included WEBAS 640 and included ICM service within the Application Server. (ICM - Internet Communication Manager) which is called IITS (Integrated Internet Server) Tcode: SITSPMON

IE -> [ICM + IITS] WEBAS Introduction of WEBAS

Until versions R/3 4.6c (Kernel Version 4.6D) ITS provided the web functionality (APO 3.0, BIW 3.0 are the last basis components)

SAP Introduced ICM (Internet Communication Manager) and named the platform as SAPWEBAS 6, this platform is going to be a common platform for all the SAP Applications even the ICM is introduced in SAPWEBAS and its still require ITS to process the web request. SAP introduced IITS which is integrated in WEBAS640. It is accessed by the tcode: SITSPMON

BIW 3.5 ECC 5.0 ECC 6.0 XI 3.0 SCM 4.0 SRM 4.0 CRM 4.0

Are the SAP components that are installed on a common platform SAPWEBAS 640.

Subsequently SAPWEBAS 700 and 710 are released

09-Jul-09

WEBAS ABAP could not provide

Consider an Example -

XI - Exchange Infrastructure: Provides communication from one system to another system. Exchange Messages called as Process Integration (or) Intelligent Broker (or) BPM using an adapter.

KM - Knowledge Management CM - Content Management

TREX Engine - Text retrieval and classification engine searches the information and bring out from Terra Bytes of data.

PI - Where the content is fetched either from BI, XI, as and when required The 4 Layers PI, BI, XI, Application Platform called as NETWEAVER

MDM - Master Data Management ERP - Enterprise Resource Planning ECC - Enterprise Central Component SCM - Supply Chain Management

SRM - Supplier Relationship Management CRM - Customer Relationship Management NETWEAVER - PIPA

P - People Integration I - Information Integration P - Process Integration A - Application Platform

Note: For Netweaver ABAP is mandatory as the business lies in ABAP.

NETWEAVER: Is a common platform which provides EP (Enterprise Portal), BI, PI, ABAP, JAVA & Mobile Integration.

SAPWEBAS 640, SAPWEBAS JAVA 640, Portal Content, KM (Knowledge Management), CM (Content Management), PI content etc., provided as add-on.

Netweaver is introduced along with SAPWEBAS 640 but most of the components as add-on. i.e., also called Netweaver '04 S, SR1, SR2, SR3

From Netweaver '04 S, SR1, SR2, SR3 or Netweaver '07 all the above content provided on one single DVD.

- The software that is required is Installation Master - Exports

- Java Components

- JCE Policy (Java Cryptography Extension) - Kernel

- The respective database (DB2, SQL, ORACLE, MaxDB)

After installation the entire content resides in the database only.

Kernel resides at OS level. It provides runtime executables/ libraries that are required for SAP Engine (SAPWEBAS)

The Installation master provides an option to install all the Netweaver components together with SAP application component (ERP, CRM, SCM, and SRM)

Netweaver Components: ABAP, JAVA, XI, BI, PI...

However WEBASABAP is a mandatory

Note: EP (Enterprise portal is not a business component for Java and it is only meant for GUI and Formatting) and EP doesn't requires ABAP

EP = EP Core + JAVA

ERP and EP cannot put together in a single box. ERP and BI cannot put together in a single box. (OLTP) and (OLAP)

XI - communication between one process to another process. MDM: Master Data Management - Data Consistency

Try to populate the data from one repository to different servers MDM5.5, MDM7.0 Netweaver Components accelerates the business components.

Usage Types: Provides certain functionality to the business components. Usage types are selected during the installation.

Usage types are ABAP, JAVA, PI, BI, JAVA, EPCORE, EP, BI, MI (Mobile Infra), Development Infrastructure.

ABAP - Mandatory for all the components except for EP JAVA - Mandatory for PI, EP, Mobile, BI-Java

PI - Both ABAP + JAVA required BIJAVA - JAVA, EP, EPCORE

EP CORE -

EP - JAVA

Infrastructure - JAVA

MOBILE - ABAP, JAVA

10-Jul-09 Netweaver alone cannot bring business it should be coupled with one of the SAP Business component like ERP, CRM, SCM etc., However when we choose to install ERP, CRM, SCM they gets installed on ABAP platform which is a part of Netweaver.

Netweaver Installation: 1. Use Installation Master

2. Select the respective Sapinst. (sapinst.exe for windows and ./sapinst on UNIX)