Load Balancing in EP

[Former Member]

Hi,

Recently, we have installed one dialog instance for EP Production (CI+DB), so for load balancig, SAP Web Dispatcher has been installed and i am able to see both CI and Dialog instance in the Web Dispatcher. In EWA, there is message "The http requests differ significantly between server nodes, which may be caused by unbalanced load distribution" and there is no single http requests going to dialog instance.

EP Version is 7.01.

Please let me know, how to resolve this issue.

Regards,

Ranjith

[Former Member]

Hi Ranjith,

Sometimes EWA reports gathers wrong information from system.Make sure collecor is running on both application server.You can goto http://<host>:5nn00/portal and then Under monitoring check for sessions/active thread on both nodes.

Also from /nwa - Java system reports you can validate same.

Regards,

Ashutosh

[Former Member]

Hi Ashutosh,

Sessions are active for both the nodes and the Jav system reports is showing "no data available" for dialog instance.

Regards,

Ranjith

[hemanth2]

Hi Ranjith,

Hope you are doing good.

It will be better to check on the server rather than the EWA report for th correct readings.

Please logon the the J2EE server via telnet and check:

> telnet <j2ee_host> 5NN08

> jump 0

> add servlet_jsp

> http_sessions count (also do type http_sessions)

Check the values on the CI and the DI. About the relationship between security session and http session, please refer to the following link:

http://help.sap.com/saphelp_nw70/helpdata/EN/8d/b5d43d92b1b14eb6c6232c94http://help.sap.com/saphelp_nw70/helpdata/EN/8d/b5d43d92b1b14eb6c6232c94317b3a/frameset.htm

Server Selection and Load Balancing Using the SAP Web Dispatcher

http://help.sap.com/saphelp_nw70ehp1/helpdata/en/48/99c3d999273987e10000000a421937/frameset.htm

Thank you and have a nice day :).

_____________
Kind Regards,
Hemanth

[Former Member]

Hi Hemanth,

Thanks for your reply.

http sessions in both CI and Dialog instances nodes are as mentioned below.

Dialog Instance:

>jump 48910050
>You jumped on node 48910050.
>add servlet_jsp
>http_sessions count

-------------------------------
Total number of http sessions: 0
>jump 48910051
You jumped on node 48910051.
>>add servlet_jsp
>http_sessions count

-------------------------------
Total number of http sessions: 2
>jump 48910052
You jumped on node 48910052.
>>add servlet_jsp
>http_sessions count

-------------------------------

CI Instance:
Total number of http sessions: 1
>jump 7056150
You jumped on node 7056150.
>>add servlet_jsp
>http_sessions count

-------------------------------
Total number of http sessions: 10
>jump 7056151
You jumped on node 7056151.
>>add servlet_jsp
>http_sessions count

-------------------------------
Total number of http sessions: 5

Regards,

Ranjith

[hemanth2]

Hi ,Ranjith,

Hope you are doing good.

The amount of sessions are well within limits as you can see..no need for any bother. :).

_____________
Kind Regards,
Hemanth

[Former Member]

Hi Hemanth,

Earlier, i logged in to OS of dialog instance and taken the output, so it was showing 2 http sessions in one of the dialog instance server node, but now i logged in to CI and monitored the http sessions and found that no http sessions are available in server nodes of dialog instance.

Go-Live is planned in a week, so need to resolve this issue ASAP. I have already opened a high priority message to SAP.

Regards,

Ranjith