Hello Thomas,

Possibly the article in

http://frontline.compuware.com/products/uf/tech/16005.aspx

can answer some of your questions. Even if this article refers to Version 7, it could possibly also be valid for newer versions.

Greetings

Wolfgang

Hi Wolgang,

happy new year and thanks for replying!

I already stumbled upon this article some months ago but as I understand it mainly adresses this topic related to the implementation on OS/390 - obviously it doesn´t.

One open questions still then:

"This interval must be configurable and must default to no less than 2 hours."
For Uniface I only the find the option to set keep alive on or off (USYS$TCP_PARAMS ka).What is the default in UF 8.4 and is there a way to configure the probe interval on Windows?

Other topics will be addressed by myself when doing some tests.

Thank you
Thomas

Dear Thomas,

The configuration of the TCP Keep-Alive Messages is done on Operating System level. In Uniface you can only configure if the TCP path should use keep-alive or not.

The default of the Keep-Alive Timeout is usally 2 hours and the following Microsoft Knowledge Base Article describes how to tweak the different keep-alive settings (on Windows):

• 314053 - TCP/IP and NBT configuration parameters for Windows XP

And here are some additional information regarding the TCP Keep-Alive Messagesfrom the MSDN Library:

• Windows TCP Implementation Features -> TCP Keep-Alive Messages

For other Operating Systems (like for example UNIX/Linux) please check the corresponding topic in the OS documentation - or "simply" search on the WWW "library".

Hope this helps.

With kind regards,
Daniel

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