Java Stack Vs Dual Stack in Pi 7.3

Hi experts.
I open this thread because I'd like to know your opinion about the newJava installation option in SAP PI 7.3. In previous realeses (7.0,7.1) I felt more comfortable and safe in abap stack and I'm a little afraid about working only with java stack.
I'd like to know advantages and disadvantages to choose java stack instead of dual stack, why you'd choose one of two options or both in your nexts customers.
Thank u so much and happy new year!!!!

Java Stack or Dual Stack in 7.3
Java Stack alone: Almost all standard adapters including HTTP, IDOC and Proxy are all available in this stack. you need to use Integrated Configuration object for this. You are basically going to use Advance Adapter engine alone for the entire processing.
Pros:
No persistance steps here. So you would improve performance many folds for sure.
Throughput is also improved very much.
since 7.3, Solution Manager is available for monitoring inaddition to RWB and NWA. So monitoring would not be issue.
If you are looking for real performance improvement, Single stack Java to go.
Cons:
Abap mapping is not supported.
Message split to multiple receivers are not completely supported.
BPM interfaces are not seamless migration here. SAP 7.1 and lower versions support BPEL wheras 7.3 supports BPMN standards. So you might have to tweak a bit to modify existing interfaces here
Dual Stack:
Your option is pretty open. If you need some specific interfaces to handle only java stack, still that is possible and increase the performance. Also if you have lot of existing interfaces that requires BPM interfaces, ABAP mapping , Multiple split /branching etc.
still dual stack is the better option now. Here developer decides according to the requirement.
Still safe mode is going for Dual Stack for now and change in the future to single java stack alone.

Similar Messages

AS Java Stack as Add-in to ABAP Stack in case of Dual Instance

Short Text
AS Java Stack as Add-in to ABAP Stack
Long Text
Hi
We are upgrading from SRM 3.0 to 5.0.
We will need to install JAVA stack as add-in to ABAP stack. SRM 5.0
need both ABAP and JAVA stack (becuase of integrated ITS and IPC).
We have one box for DEV and QA and they are installed as separate
instance (dual instance).
Can we install JAVA stack for both instance separately?
Or do we have to split the dual instancing development system into two
separate standalone system
Please advise
Regards
Manisha

Hi Mike
Thanks for your response.
We do not have MCOD installation.
Our DEV and QA installed on same physical same server but they they their own database and separate instance of ABAP stack.
Some concern have been raised that if we install JAVA stack as add-in on DEV instance, QA instance will be impacted. Because you can not have two separate JAVA stack on same server.
Please advise if above concern is true
Regards
Manisha

How to reset java upgrade in dual stack upgrade

Hi,
We are working on dual stack upgrade.Now we are in downtime phase for both the stacks.I have situation to reset upgarde now.
I restored DB before downtime phase and jup for java and upg for abap.I am able to reset abap stack.Could anyone please let me know the process to reset java stack.
Thanks

Hi,
In order to reset Java Part, you need to restore file system of the same time-stamp which you have restored for database. Since you have restored DB, so shadow repository of Java Part is already gone, so only you need to restore file system.
Thanks
Sunny

Advantages of JAVA stack on ECC 6.0

Hi There
Can any one please make me clear about the adavantages of JAVA stack on ECC6.0, how does it helps our business, as tehre are no JAVA relaetd components in our environment , now we are on ECC6.0 ABAP stack, if this is the case how to go ahead with JAVA stack, I mean to ask the of make my ECC6.0 as a dual stack , must i choose JAVA system as an Add-on to existing ECC ABAP stack or must i go for another stand akone JAVA box, which option is the correct one.
Now we are on BW3.0
got a plan to upgrade to BI 7.0 , is JAVA system required for that or BI 7.0 only runs on ABAP stack?please let me know how to implemnt the JAVA stack for the existing system.Thanks in advanse.

HI
Kakani
Can you go thorough dis link
http://wiki.sdn.sap.com/wiki/display/WDJava/WelcometoWebDynproJava!
Tanks
Rafi Shaik

Do I need to have a JAVA Stack for normal ECC 6.0 ?

Hi together,
we want upgrade our R/3 4.7 to ECC 6.0.
Do I need JAVA deployment on my ERP system as part of the upgrade?
What funktions are in the JAVA Stack for ECC?
best regards,
Carsten Schulz

Just as advise:
I would highly avoid any dual stack installations nowadays. You can install the J2EE engine on the same host but use a different SID so you have two separate instances.
Markus

SAP ECC 6.0 EHP4 installation with ABAP+JAVA stack

Hi,
I need to install SAP ECC6.0 EHP4 with ABAP+JAVA stack on windiws server 2008 with oracle.
I have read that for this, we need to install ECC 6.0 EHP4 ready and then upgrade to EHP4 using ehpi installer.
I have found the documents seperately for ABAP and JAVA stack and not for ABAP+JAVA.
I need clarifications on these.
1.Do we need to install ABAP and JAVA instances seperately with EHP4 and then upgrade(In that case I have to install both instances on single host)?
2.Should we give seperate <SID> for both instances and create seperate databases?
3.Hard disk requirement for this set up.(We have 150 GB including C drive)
4.Steps to perform after installing ECC6.0 EHP4 ready
5.Please send me the doc. if anyone has
Anyhelp would be highly appreciated.
Regards,
Surya

> 1.In the installation document for EHP4 ready for SAP ERP 6.0 ABAP.It is mentioned that this installation contains only basic EHP4 for ERP 6.0 and we need to install additional EHP4 functionality in the SAP ERP 6.0 -EHP4 ready system.
> It states that atleast Support pacakge stack (SPS) 1 of SHP4 needs to be installed.So If I install this stack using EHPi installer in the post installation activities my SAP ERP 6.0 EHP4 will be in place?Please confirm.
Yes..
>
> 2.Can I install SAP SR3 with dual stack and upgaradte it directly to EHP4 at a time?
Yes you can do it.....as SAP still supports dual stack ERP systems to EHP4
>
> Any solutions or suggestions from others also welcome.
Why do u want a dual stack ECC ystem?? any specific requirement???
Regards,
Nirmal.K
Edited by: nirmal konchada on Feb 2, 2011 12:16 PM

Java Stack is not started in SAP netweaver ABAP+JAVA Stack

Dear All,
Win2003 64 bit , ECC6.0 , Oracle 10.2.0.2.
Its a newly installed SAP Netweaver Dual Stack (PI) , Yesterday i have done Client copy from 001 to 999 (SAP_UCUS).
Client copy also successfully completed .
login/system_client=999 ,i have activated in Default profile and i have restarted the Server.
Now i dont have issue with ABAP stack ,its working fine, but java stack is not working running.
std_output0.out log:
Service com.sap.aii.adapter.mail.svc started. (812 ms).
Service com.adobe~XMLFormService started. (2937 ms).
Service com.sap.aii.af.ispeak.svc started. (390 ms).
ServiceManager started for 73719 ms.
Framework started for 85781 ms.
SAP J2EE Engine Version 7.00 PatchLevel is running!
PatchLevel September 11, 2006 16:35 GMT
>
Login :### Excluding compile: com.sap.engine.services.webservices.jaxrpc.encoding.TypeMappingImpl::initializeRelations
Excluding compile: com.sap.engine.services.webservices.jaxrpc.encoding.GeneratedComplexType::_loadInto
Excluding compile: com.sap.engine.services.webservices.jaxrpc.encoding.InstanceBuilder::readSequence
Excluding compile: com.sap.engine.services.webservices.jaxrpc.encoding.InstanceBuilder::readElement
SAP J2EE Engine Version 7.00 PatchLevel is shutting down! PatchLevel September 11, 2006 16:35 GMT
=================
C:\Documents and Settings\ixdadm>jcmon pf=D:\usr\sap\IXD\SYS\profile\IXD_DVEBMGS
00_SAPXIDEV
[Thr 4576] MtxInit: -2 0 0
============================================================
JControl Monitor Program - Main Menu
============================================================
0 : exit
10 : Cluster Administration Menu
20 : Local Administration Menu
30 : Shared Memory Menu (Solid Rock, experimental)
command => 20
Can't open shared memory administration (rc = -107)
============================================================
Kindly suggest .
Edited by: satheesh0812 on Dec 30, 2010 12:00 PM

Hi,
Please provide the full log entries of server0_out.log.
You can access UME service properties in config tool by following this path..
Global server configuration -> services -> com.sap.security.core.ume.service
There you can set the following settings for new client 900 (it u want to change it)
ume.r3.connection.master.client
ume.r3.connection.master.user
ume.r3.connection.master.passwd
Refer this [useful link|http://help.sap.com/saphelp_nw04s/helpdata/en/45/1bbdccc7850064e10000000a1553f7/frameset.htm] to get more detailed information. Refer [Config Tool actviities|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c0a3d713-5ab6-2c10-ddb1-e7487bc33384?quicklink=index&overridelayout=true] link To get more information.
Also, Make sure that the Users J2EE_GUEST, J2EE_ADMIN, SAPJSF ABAP Users exist in the ABAP client (i.e. client number as mentioned in ume.r3.connection.master.client ) and they are not locked. All the required roles need to be assigned properly.
Regards,
Bhavik G. Shroff
Edited by: Bhavik G. Shroff on Dec 31, 2010 2:58 PM

Abap+ java stack or Abap stack

Hi All,
How to know whether a system is ABAP+ JAVA stack or JAVA stack.
In our system EP6.0 which is JAVA stack holds JC00 which is a java instance direcory. In BW system we have SCS20 and Dvebg...00 directories is it ABAP+ JAVA stack or ABAP stack with J2ee engine services.
Please suggest me...
Thanks,
Subhash.G

In the forder structuer usr\sap\<SID> if you have DVEBMGS<XX> then it's ABAP and if it's JC<XX>, then it's JAVA. Also if under DVEBMGS<XX> you have j2ee and SDM folder then it's a dual stack that is both ABAP and JAVA.
As for the URL if it's a dual stack then using the browser use the user j2ee_admin and the specified password, else if it is only java then use administrator user and the specified password.
If it's a dual stack you can also login using sapgui.
If in case its single stack AS_ABAP
THere will one be a single node i.e. no message server and enque server. The folder stur would be /usr./sap/<SID>/ and tou would find
DVEBMG SYS folders only.
IF in case its single stack Java server then
In mmc. you will find, 2 nodes one for message server, enque server and the other for the SDM, dispatcher and server0
the foder struct would be
/usr/sap/<SID?
JC><CIno> SCS<no>
Now in case if you have double stack i.e. AS-java and AS-ABAP you would will find these things in mmc
Message server and enque server
disp+work, message server and wp
the folder struct would be
/usr/sap/<SID>/
DVEBMG<no> SCS<no>

Running different SPs in ABAP and Java Stack?

Hi,
we do have a dual stack installation of the Web Application server.
We wanted to update from SP9 to SP12. Unfortunately we had problems with updating the ABAP Stack. The problems are not solved yet.
At the Java side we would like to user some new features of SP12. Can we update the Java stack though the ABAP stack is not updated yet?
Thanks for an anwser
Helmut

Hi
I have tried it - not with this particular combination of packages but it should not matter. SAP made support packages stacks to make i.e. testing easier so of cause they will not recommend different levels - which I wont do either in general. However for a particular scenario/installation that I knows and as an exception I would not be reserved for doing this.
It also depends of what runs on the WAS and how much interaction between the two stacks there is. One example could be running EP on a dobule stack system, here I would not personally be afraid og having a higher Java level than abap.
One question of cause is what's the problem with patching the abap stack? It would always be better to solve this problem first, but sometimes we have to make expetions due to timing and priorities...
BR
Tom Bo

Seperate ABAP and JAVA stack for BI

Hi,
We already have running a ABAP stack with BI 7.0 on Oracle/AIX
We are now going to install the JAVA stack with the following software units (AS JAVA, EP, EPC, BI JAVA) to a seperate AIX server. I do have the following questions:
1.) The installation of the JAVA stack will also create a new database or is it possible to use/connect to the database of the ABAP stack
2.) How are we going to connect the ABAP server to the JAVA server. Will that be with JCO or RfC or something else.
3.) Installing the JAVA on a seperate server, how the handle the user store. Creating its own or can we use the user store of the ABAP such as in a dual stack installation ?
4.) Other issue's what is worth to mention
please advise
Ritchie

Hi Ritchie,
You can have different installation options.Amswers below
1)As you are installing in a different system It will create a sepatate database and the connection will happen through jco/rfc.
2) jco/rfc will be used for connection
3)User store will be selected according to the installation mode mentioned in the installation guide.
Regards
Ashok

SAPehp tool does not know the host for Java stack

I am running SAPehp tool to apply enhp2 to a dual stack with
ABAP and JAVA on seperated Windows boxes.
I started SAPehp at the ABAP box.
Because there is no way to tell where is the Java host, how do I apply
the enhp2 to the Java side? How to make ABAP and Java in sync?
Please help.
Thanks!

Hi Christy,
I consider that both of your ABAP and Java system has separate database. If this is the case then you have to upgrade both system separately and run EHPI installer on both system. You can upgrade the system in same way as you are doing for your ABAP system only difference is the support packages and rest of the main things are same.
I will recommend you to study upgrade guides for ABAP and Java system.
If your ABAP and Java system has different SID but share same database (i.e. MCOD system) then run EHPI installer for upgrade once a time. It means that when you will upgrade the ABAP stack then don't run EHPI tool to upgrade Java stack at same time. Once ABAP system upgrade finished then upgrade Java system. And vice-versa.
Thanks
Sunny

SUM find uninstalled Java stack

Dear community,
two weeks ago we have splitted our BI/BW system into two stacks for an upgrade. Everything worked smoothly.
Now I start SUM to upgrade the ABAP-stack and it finds a dual-stack. In the logs I find the error message:
Not Supported AS Java Release. None of the Version Command, SDM, JSPM tools have been found!
Why does it still expect a Java-stack?
In the DEFAULT.PFL the parameter system/type was removed properly by the tool. In the instance-profile it hadn't been removed but I removed it manually. But even after restart of the SAP-system SUM still expects a java-stack.
Can anybody help me?
Best regards, Henning

Dear Ashutosh,
thank you very much for the fast responses.
I have marked any line containing "j2ee" with a hash "#" and even restarted the complete AIX-server. I removed the SUM directory and extracted it again. The problem still remains.
Dear Hemanth,
The output of GetVersionInfo looks like this.
Best regards, Henning
bd7adm 6> sapcontrol -nr 01 -function GetVersionInfo
16.04.2014 19:05:47
GetVersionInfo
OK
Filename, VersionInfo, Time
/usr/sap/BD7/DVEBMGS01/exe/sapstartsrv, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 11:06:08
/usr/sap/BD7/DVEBMGS01/exe/disp+work, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 00:59:53), rs6000_64, 2012 03 21 09:04:54
/usr/sap/BD7/DVEBMGS01/exe/gwrd, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 00:59:53), rs6000_64, 2012 03 17 10:08:49
/usr/sap/BD7/DVEBMGS01/exe/msg_server, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 10:53:44
/usr/sap/BD7/DVEBMGS01/exe/dboraslib.o, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 00:59:53), rs6000_64, 2012 03 17 01:31:52
/usr/sap/BD7/DVEBMGS01/exe/enserver, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 10:58:28
/usr/sap/BD7/DVEBMGS01/exe/icman, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 10:48:00
/usr/sap/BD7/DVEBMGS01/exe/sapwebdisp, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 10:48:45
/usr/sap/BD7/DVEBMGS01/exe/jcontrol, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 11:22:56
/usr/sap/BD7/DVEBMGS01/exe/jlaunch, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 11:23:03
/usr/sap/BD7/DVEBMGS01/exe/jstart, 720, patch 201, changelist 1315424, optu (Mar 17 2012, 07:40:15), rs6000_64, 2012 03 17 11:20:52

Java stack system copy

Dear Experts,
I have recently done few ABAP+java stack system copies using R3load method. Basically i have done Export ABAP and JAVA stack and Imported the same to QAS system using sapinst with SMIGR_CREATE_DDLs kept along with Import.
But i am really not having in depth idea over it even after reading system-copy guides for Neweaver SR1.
Because this procedure is taking a lot of time as compared to our old technique for only ABAP stack which was normal backup and restore of database and then change of SID with controlfile.
But while reading TADM10 i found backing up and restoring AS java ..
and i have querry whether is there any way we can do simple database backup and restore for ABAP stack ... and then just Export JAVA stack from source and Import the same to target QAS machine which will save time for us.
Or anything like just backup SDM , instance dir,bootstarp.properties,instance.properties and then Import through Configtool in Target machine.
Please let me know the procedure in depth as we are really facing hard time because of downtime required for R3load Export-import method.
Best Regards,
AjitR

I guess you have Exported java and imported JAVA to one system and the Exported ABAP and Imported to another system.
I´ve exported Java, imported it on system A, I´ve copied the complete database using backup/restore onto system B and deleted the Java schema.
I suppose there is no way for parallel Export Import for dual ABAP + JAVA at one strock.
I´m afraid - no - I just checked...
So the way out could during Export and Import there is something called as Number of work processes for Export and may be for Import. With increase or change in default ones will i get more Time saved during Export and Import as compared to default one.
Yes - definitely.
You can also split tables.
I usually use 2 R3load per CPU, max. table sizes in one package 250 MB, separate the biggest 250 tables. This enables me to export a 1.8 TB system in about 7 hours (which is still a VERY long time) with a total of about 400 single packages.
About the degree of parallelism: Make sure you underlying I/O system can deliver enough. If you have a system with many CPUs (8+) and your I/O system is not able to handle that load, speed will go down and probably this will affect normal work.
The fastest way I found out is to use a socket connection over a gigabit ethernet instead of storing onto a network drive, however, in that case the target system need to be fast enough to import all the data as fast as the export system delivers (same amount of R3load processes). During import you can use "-loadprocedure fast" as additional option (bulk import). This will speed up significantly. However, make sure you have the latest patches installed on the target system if you use the default ASSM tablespaces, corruptions may occur otherwise (see note 1045847 - ORACLE DIRECT PATH LOAD SUPPORT IN R3LOAD)
Long story short: If you have the possibility and hardware resources to separate ABAP from Java it´s the best you can do from an administrative point of view, this will make you refrain from doing copies via R3load.
Markus

AS Java Stack as Add-in to ABAP Stack

We are upgrading SRM 3.0 to 5.0.
We will need to install JAVA stack as add-in to ABAP stack. SRM 5.0 need both ABAP and JAVA stack.
We have one box for DEV and QA and they are installed as separate instance (dual instance).
Can we install JAVA stack for both instance separately?
Or do we have to split the dual instancing development system into two separate standalone system
Please advise
Regards
Manisha

Hi Manisha,
If the box is properly sized I feel that in the same box itself you can have 2 java instances (just you have to take care of the instance number).
Also another point which you can consider is that whether your platform is 32 bit ot 64 bit.
So if it is 32 bit what I recommend is to use new hardware and seperate the instances.
Any how it is possible technicall to have 2 java instances in one server.

SAP BI 7.4 ABAP Only, Do i need Java stack

Hello,
We are implementing BI and currently we only installed BI ABAP Stack only, customer will look for reporting and dash boards In future. Customer also has plan to implement SAP Business Objects. Could you please advise me here
Do we need BI Java stack for BOBJ ? With out Java can we do reporting and dash boards ? Can some one please help me to understand
Please
Thanks,
Aravind

Hi,
SAP Business Objects Business Intelligence 4.0 is installed on any machine ( windows/unix, depending on your architecture). It is integrated with a backend BW(also called BI) system. Now this BW(BI) system needs to be dual stack ( both ABAP and JAVA; as many features of SAP Business Objects Business Intelligence 4.0 requires BW java portal).
You cannot add ABAP ( like an add-on) to already installed java stack. ( though the reverse is possible, but not with NW 7.3).
What you can do now is to install NW 7.3 ABAP as a separate system and then integrate your NW java with your ABAP ( i.e, change the UME from java databse to ABAP in your java stack). This has to be done as ABAP+JAVA installation option ( as a single instance) is not available for NW 7.3 ( exception being for PI and Solution Manager). No further change in SAP Business Objects Business Intelligence 4.0 is required.
For more infor refer to
BI and BO - ABAP, Java or Dual stack
Regards

Java Stack Vs Dual Stack in Pi 7.3

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