Web dispatcher

[Former Member]

Hi

I have a question about Web Dispatcher.

How the web dispatcher know the availaility of j2ee server node.

If the port is up(I mean hostname:port), but the j2ee engine service doesn't available, is the connection switch to available server node anytime?(HTTP 403, 500, 503 ...)

regards,

[michael_mulvey]

Hi C.J.

The webdispatcher checks the message server by default every 120 seconds (wdisp/auto_refresh = 120) and updates the list of available servers. So if a node goes down the webdisp will route requests to it for a maximum of 120 seconds and then the server is removed from the pool.

You will get the 500 HTTP error codes for stateful requests as the webdispatcher is forced to send these to the downed node.

Hope this helps

Michael

[Former Member]

It works on the principleof logon group aain and if it is not available it uses the default !J2EES.

Thus if somehow the J2EE engine becomes unavailable suddenly, it cannot dynamically switch it.

Please, find below the SAP Help link for the details:

http://help.sap.com/saphelp_nw04/helpdata/en/42/5cfd3b0e59774ee10000000a114084/frameset.htm

Hope this helps.

- Regards, Dibya