Which cases we need to restart the J2EE Engine

Hi,
In our project , we have only two servers
One for Development & Testing
Second for Production.
Because of the Development and testing happening in the same mechine, we are requesting the client to get another server, Because we are getting problem to use the same server for develpment and testing .
when ever we make any changes at the bapi side, to reflect those changes in the front end or webdynpro, we need to restart, if we make any changes in the, Config Tool or Visual Admin, we need to restart.
At the same time couple users are working in the same server for tesing. It is troubling them when ever we make the restart.
So we are getting lot of complaits when ever we restart the server.
so we decided to request new server for development seperately. so , one of our administrators asking for proofs from the SAP coumentation, why do we need restart many times.
To get the new server for development, we need to show documentation from the sap for resons of restart. i have got some documentation for restart when it requires.
If any of you have some links related to this restart requires done on which cases?
can u please forward it me.
Regards
Vijay

Hi Vijay,
Find the official documentation for J2EE engine in the below link
<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/1a/819d42449b0731e10000000a1550b0/content.htm">http://help.sap.com/saphelp_nw2004s/helpdata/en/1a/819d42449b0731e10000000a1550b0/content.htm</a>
Regards,
Sudeep

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How to restart the J2EE Engine

I ran a couple tests the other day, and the next time I looked the J2EE Engine was down. (Could not send or receive PTP messages to it).
When I brought up the J2EE Engine Administrator, it put upt the following help box:
<b>Unable to lookup connection default
http:host1:8101/msgserver/text/login returned empty list of connection parameters</b>
I had to reinstall to get it to work.
Does anyone know how to restart the J2EE engine ?
Thanks, John

Hi,
judging by the URL given in the error message (which is a URL that queries the message server), your engine must be of 6.40 version. Well, on 6.40 you should have the SAP Management Console (SAP MMC) that you can open and start the engine from. TO open it, go to Start -> Programs -> SAP Management Console. Inside, locate your SAP System, right-click on it and select Start.
That's it.
Just for a reference, <a href="http://help.sap.com/saphelp_nw04/helpdata/en/9b/dd7277f3e64ecba59f7fbac7edd2fe/frameset.htm">this</a> page contains also some screenshots of the MMC.

Enque Server was restarted without restarting the J2EE engine (MSCS)

Hello All,
I've installed the Portal on Microsoft Cluster (MSCS) and everything is working well. Now when i try to move the Group from Node 1 to Node 2 to test whether it fails over or not?? It does fail over however, server node on CI and DI(Dialog Instance) gets crashed. I checked the log files and got the following:-
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Hi vaibhav,
We are planning to install a HA & Load balanced NW portal. I was looking to get some information regarding same. While going through SDN, I came across this message. Thought of writing to you, since you have already implemented this solution.
Do you have any IDEA, whether SAP(Ok with other Institute also..) offer's any courses / Training for setting up HA (High-Availability) & LOAD BALANCING solutions for NetWeaver Enterprise Portal ?
Or any books available for the same at SAP Press?
PS: you also may refer to my message at SDN with the subject line: Courses / Books For HA & Load balancing for NW Portal
Courses / Books For HA & Load balancing for NW Portal
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how is it possible to restart or start only the j2ee-engine in a dual stack installation. We have a JAVA- and a ABAP-Stack and want only restart the JAVA-Stack. In windows i can use the MMC of SAP but how is it possible in UNIX.
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sharam

Hi Eric,
i konw this TR, it doesn't work. There are two possibilities:
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Restart the servlet engine

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I need to restart the database

Hi Guys,
I have migrated my database from oracle 9i to 10gR2 and from 32bit windows to 64bit RHEL4 using full database export and import. Everything works fine. We have got some performance enhancements also.
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Hi,
>>After restarting the database it completes within 15 mintutes.
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In which case we need a class with all methods defined as abstract ?

In which case we need : A class with all methods defined as abstract (or should we go for Interface always in this case)

The concept of interface and abstract class overlaps sometime, but we can have the following thumb rule to use them for our specific need:
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Is it necessary to restart the J2EE after I have imported certificates?

Hi guys,
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Hi Friends,
Do we need to restart the Tomcat server each time when we modify servlets. Or is there any otherway to achieve the functionalitly?
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JamesGeorge wrote:
Hi kajbj,
Java guys are mostly using TOMCAT,so for me it seems to be the best place.That's not correct. Most people who are writing stuff for the web might be using Tomcat, but there are lots and lots of Java applications that aren't for the web.
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PCI-GPIB does not like returning from computer power-save mode. I need to restart the application. Uggh! Customer not happy.

It seems volatile memory is lost on the PCI GPIB Card. When the system returns from power-save, I cannot get to my GPIB instruments. I have to close the application and restart it. I've tried unregistering and reregistering the gpib globals and resetting the device interfaces (reissuing the ibdev command) without luck. I am using Visual Basic 6, but I also get the Measurement and Automation Explorer to fail in the same way, so I don't think it is my development environment.

On Sat, 15 May 2004 20:23:58 -0500 (CDT), SQP Products wrote:
>PCI-GPIB does not like returning from computer power-save mode. I
>need to restart the application. Uggh! Customer not happy.
>
>It seems volatile memory is lost on the PCI GPIB Card. When the
>system returns from power-save, I cannot get to my GPIB instruments.
>I have to close the application and restart it. I've tried
>unregistering and reregistering the gpib globals and resetting the
>device interfaces (reissuing the ibdev command) without luck. I am
>using Visual Basic 6, but I also get the Measurement and Automation
>Explorer to fail in the same way, so I don't think it is my
>development environment.
Can you change your power save settings? What operating system
are you running?
Also, some BIOS's have options for power save. For example, recent
IBM's can be set to maintain power to all peripherals, or only to main
memory. Of course, you would want it to maintain power.
I suspect the GPIB board and its driver are completely unable to
handle power save operation. It probably was never considered while
it was being designed.
Aidan Grey

Which cases we need to restart the J2EE Engine

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