ABAP and J2EE-Stacks in SAP WEB AS

Hi,
I have two questions about the technical architecture of SAP WebAS, particularly about the ABAP- and J2EE-Server.
Can someone recommend detailed papers/guides (besides help.sap.com)describing:
1) the management of processes and resources in two parts (ABAP and Java)
and
2) The communication mechanisms between J2EE- and ABAP-server.
What are the problems with JCo?
Is there other possibilities to communicate between 2EE- and ABAP-server.(besides JCO), what is the performance in this case compares with JCO?
Thank you!
Peter Hneke

Hi
please have a look in to this Pdf Doc . might be of soem help to you .
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/b52456bd-0a01-0010-6d9b-f153bf15a82f
Apart from JCO communication between JAVA and ABAP can also be handled using ESA services .
please have a llok at these blogs
/people/scott.campbell/blog/2005/05/16/the-esa-is-coming-the-esa-is-coming
/people/kevin.liu/blog/2005/10/17/esa-soa-es
/people/harsh.chauhan/blog/2005/08/27/building-esa-and-delivering-it-through-caf
/people/sap.user72/blog/2005/10/28/the-fundamental-problem-solved-by-esa
Hope this helps . pelase do not forget to reward points , if helpful
regards
rajeshkr

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I have two questions regarding the communication mechanisms between ABAP- and J2EE-Stack.
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Hi, Peter!
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I would like to know the similarities and differences in ABAP and J2EE regarding their DB-Connectivity.
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Hi Sunny,
JCO RFC is tested and it is working fine. So no issues from JCO RFC side. Hope you would have read carefully.
>
Ashish Mishra wrote:
> But still even after configuring the JCO RFC successfully, I am unable to view, configure or control
> J2EE stack's status from smicm (ABAP).
>
========================================================
Hi Anil ,
Thanks for your reply. but
>
Ashish Mishra wrote:
>
> I have installed two separate ABAP and Java Stacks and trying to connect both the stacks together.
>
Hope I am able to clear your doubt. Java is completely separated stack and not add-on.
Suggest me how can I proceed further on this connectivity.
=========================================================
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I would like to decouple the ABAP and J2EE server
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http://help.sap.com/saphelp_sm32/helpdata/en/9a/b9b09d57aba54ca6d010b82b9119e4/content.htm
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Hi,
It clearly says the problem is with virtual memory. SO you need to change your virtual memory settings using configtool.
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Do reward good points.

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I am trying to install abap stach and java stack together.
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I tried SP09 and since it didnt work Sp07 also since I had it with me downloaded before.
Any help ??? Got stuck
I need to install together to practice webdynpro...
E:\NW2004sSP7_Preview\SAP_NetWeaver_2004s_SR_1_Installation_Master_DVD__ID__NW05SR1_IM1\IM_WINDOWS_I386\NW04S\WEBAS\ADA\control.xml
George
INFO 2006-11-30 15:10:12
An error occured and the user decided to rety the current step: "|NW_Java_OneHost|ind|ind|ind|ind|0|0|NW_Onehost_System|ind|ind|ind|ind|1|0|NW_GetSidNoProfiles|ind|ind|ind|ind|1|0|collect".
ERROR 2006-11-30 15:10:14
FJS-00003 TypeError: this._name has no properties (in script NW_Java_OneHost|ind|ind|ind|ind, line 8987: ???)
INFO[E] 2006-11-30 15:10:13
FSL-02077 File system export (share) saploc does not exist.
ERROR 2006-11-30 15:10:14
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In ABap STack install instead of files as in SP 07 they have created an image and may be this si the reason that
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i found soltuion myslef THe lates WAS for abap is preconfigured and so its not suitable for abap-java multiple installation

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An overview of supported Standards (Java 5 since when?)
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Guidelines when to install both stacks and when to use just one stack? When do I use which one?
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etresoft,
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ABAP and J2EE-Stacks in SAP WEB AS

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