SAP Web Application server is part of SAP NetWeaver and represents the basis of most SAP products. It is divided into a ABAP (in former times: R/3-Basis) and a J2EE-Applikationsserver. Both parts (stacks) are both individually and together installable. In case of an integrated installation (ABAP and Java) the Java stack uses the user management of the ABAP stack. In addition communication connections between the stacks are provided automatically.

Characteristics of the Java Applikationsservers

SAP Web Application server 6,40 Java has the following characteristics:

• been based up and the Java supports reference model in the version 1.3
• Web Dynpro technology for the production of Web Frontends
• Open SQL for Java - developers can write SAP Web Application server underlying data base systems (and/or the individual data base schemata) to SQL statements without knowledge that.
• NetWeaver development Infrastructure (NWDI):
  • Design Time Repository (administration of the source codes)
  • Component Build service (central Buildservice)
  • CHANGE management service (transport of developments within a so-called development TRACK)
  • System Landscape directory (technical system landscape, software catalog)
• Enqueue server for the central administration of logical barriers, during the execution of transactions
• Message server for the cluster administration and distribution of inquiries
• SAP NetWeaver Developer Studio (on Eclipse which is based development environment)
• Basis for many Java based applications SAP (e.g. SAP NetWeaver portal)

Characteristics of the ABAP Applikationsservers

SAP Web Application server 6,40 ABAP has the following characteristics:

• Application server for the SAP own programming language ABAP
• Basis for many SAP applications (e.g. ERP 2004)
• Web services are supported
• Support for Adobe print form and Adobe off-line form

Administration

• Transactions via SAPGUI (ABAP and JAVA)
• Profile files (ABAP and JAVA)
• Visual administrator (Java, with started application server)
• Configtool (Java, with stopped application server)
• Netweaver administrator (Java, administration Web surface since NW04 SPS12)
• System Landscape directory (Java, among other things to the care of connected systems, software components and name areas)
• JCo - for the connection by Web Dynpro applications with SAP R/3 systems within the SLD system Landscape directory
• CMS (Java, mechanism of the transportation landscape for developments)

Function mode (Web access)

• Inquiries (so-called Requests) at SAP the Web Application server can be received
  • from HTML-based sides, which were provided by Web Dynpro,
  • of XML - Messages were based
  • of Web services
  • and of a number of further sources

• SAP Web Application server accepts the information from these inquiries and hands it over anJAVA oderABAP based programs those within the server runs.
• These programs can process then the received data by tools and components, which support functions like e.g. Workflows, archiving among other things
• The Web Application server asks and stores data by OpenSQL. This makes the unique development possible of software, which supports all large data base manufacturers equally.

Related links

• Homepage SAP AG
• Assistance side SAP AG
• SAP Developer network

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