Question Re: difference between Abap stack and Java stack in Technology Q&A

difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 06:59:00 GMT

difference between Abap stack and Java stack

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:01:34 GMT

They are some applications(ABAP) related to ABAP Stack like Idoc,XI,HTTP These adapters are working in Integration Engine.

Remaining all adapters are in Central Adapter Engine..it is in JAVA Stack.

Java Stack is currently being on Web based front ends and Stand alone java portal,The java doesn't direct access to ABAP database, because the business logic is kept in intact.

and check this thread :

Regards,

Sateesh.

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:02:21 GMT

Hi,

A very common question.

Let me make it clear.

Both of them are programming languages.Despite the fact that both are platform independent, ABAP is a query based language and the other is a pure object oriented language.

ABAP is the core for SAP as it's R/3 system are developed using this ABAP language.

SAP decided to move ahead in this world and included ITS into it's product.

Slowly the realised the importance of going web-based, and hence decided to move in the steps of web services so that all the transaction based interactions can move in the form of web services being deployed.

Then they came up with a product called NetWeaver which can have both the JAVA stack and the ABAP stack.

Hope it helps you to know the background and resolves your query.

If you go thru SAP XI architecture diagram , you will get more info on this-

http://help.sap.com/saphelp_nw2004s/helpdata/en/53/fe48b44c5e4bcab5c71fdcf3ee9bc7/content.htm

In general-

Adapter Engine is in J2EE stack

Integration Engine is in ABAP stack.

Some inputs-

Best Regards,

Arman

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:13:24 GMT

Hi aravind,

Web service can also be consumed from the ABAP stack , it is only the web service navigator and homepage that run on the java stack

If you go thru SAP XI architecture diagram , you will get more info on this-

http://help.sap.com/saphelp_nw2004s/helpdata/en/53/fe48b44c5e4bcab5c71fdcf3ee9bc7/content.htm

In general-

Adapter Engine is in J2EE stack

Integration Engine is in ABAP stack.

Some inputs-

regards

srinivas

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:20:43 GMT

Hi,

ABAP is one of the 4th generation query language where you can create reports, creating Function modules.etcfor certain business scenarios. Where as Java is strictly an Object oriented programming language.Eg: you can see your yahoo mail or any other site, most of them are created using JSP' or some other tools. these are all Java based.

Both of them are programming languages.Despite the fact that both are platform independent, ABAP is a query based language and the other is a pure object oriented language.

ABAP is the core for SAP as it's R/3 system are developed using this ABAP language.

SAP decided to move ahead in this world and included ITS into it's product.

Then they came up with a product called NetWeaver which can have both the JAVA stack and the ABAP stack.

SAP has combined the advantages of both ABAP and JAVA to come up with a new product called Netweaver

this documens meight help you

http://help.sap.com/saphelp_nw04/helpdata/en/14/80243b4a66ae0ce10000000a11402f/frameset.htm

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/25a3df90-0201-0010-10b6-9712397c22fd

Refer this blog

Regards,

Surya

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:21:41 GMT

ABAP and Java are the two diff stacks in WAS. ABAP is use to run ABAP besed applications or services and Java is used for Java bases applications or srvices.

ABAP stack contains: IE, BPE

Java stack contains: SLD, IR, ID, RWB, AE

Thanks

Farooq.

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 07:29:12 GMT

ABAP Stack

The application data in the SAP system is accessed in

the ABAP stack via platform-independent ABAP programs.

ABAP stack is used to run ERP applications mainly MM,SD,FICO etc

Currently in most of the installation you can found mixed stack(ABAP+JAVA)

JAVA Stack

The Java side of the SAP Web AS is often referred to as SAPWeb AS Java or

as the Java stack.

This central SAP Web AS Java instance consists of two separate

instances plus one special application, the Software Deployment Manager (SDM).

These two separate instances that build the central SAP Web AS Java instance are

a standard SAP Web As Java instance, offering a Java dispatcher process and one

or more Java server processes and the so-called SAP Central Services instance

(SCS). The SCS instance offers two processes, exclusively used by the Java side

of the SAP Web AS: the enqueue services and the message service. These two

services only work for the Java side of the SAP system.

Java Stack is mainly used for SAP Portals and you can host Internet/Web based application written in JSP/EJB ,Java Stack uses Java Threads to run application,

Also, Xi requires Double stack

ABAP + JAVA Stacks

Bcoz some components are developed on JAVA

Some components are developed on ABAP Based.

JAVA:

Integration Builder

SLD

Adapter Engine

Runtime Workbench

ABAP:

BPE

Integration Engine

Integration Engine and the Integration server reside on the ABAP Stack. All the Execution of the IS part will be done on ABAP Stack. we can monitor the processed XML messages also in SXMB_MONI( ABAP Stack)

Adapter Engine will reside on the JAVA Stack. All the IR, ID, SLD, RWB Application are developed on JAVA Stack, so thats why we need JAVA Webstart to run these Applications

All the Adapter related Errors we can see in RWB, Communication channel monitoring( Developed and sits on JAVA stack)

Hope this clears your doubts

Thanks

Saiyog

Re: difference between Abap stack and Java stack

Former Member — Fri, 01 Aug 2008 13:43:17 GMT

HI,

ABAP stack are located at integration engine. IDOC, RFC,XI, HTTP adapters are work on ABAP stack.

JAVA stack are located at Central integration enginer. FILE, SOAP ect adapters are work on java stack

XI need both for scenario execution why because xi/pi components are developed by java

I hope little bit clear

Edited by: NALLAM GUNA RANJAN on Aug 1, 2008 7:19 PM

Re: difference between Abap stack and Java stack

Former Member — Sun, 03 Aug 2008 07:12:11 GMT

thanq