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· Mar 26, 2020

What does <NETWORK DATA UPDATE FAILED - MAXSTRING> mean?

#Error Handling #Caché

The intersystems documentation gives the same description for both <MAXSTRING> and <NETWORK DATA UPDATE FAILED - MAXSTRING>. I suspect that the description for <MAXSTRING> is correct and the description for <NETWORK DATA UPDATE FAILED - MAXSTRING> was an accident. I would like to know what situation triggers the <NETWORK DATA UPDATE FAILED - MAXSTRING> error.

If I had to guess, I would say it means that a MAXSTRING error occurred on the data server while it was attempting to process a request from the app server; instead of sending back the expected response, the data server sends back something that triggers the <NETWORK DATA UPDATE FAILED - MAXSTRING> error on the app server. That's just a guess, though. Can someone tell me for certain what <NETWORK DATA UPDATE FAILED - MAXSTRING> means?

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Nicki Vallentgoed · Apr 1, 2020

I do not know what you use to "process a request from the app server"?

1. Do you have Long String support turned on in, System > Configuration > Memory and Startup?

2. If you are using webservices you can modify the generated classes and change payload to type %GlobalCharacterStream

https://cedocs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=GSOAP_webclients#GSOAP_clie%20nt_the_long_string_problem
 

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Vic Sun · Apr 1, 2020

Hi Kevin,

Thanks for pointing the documentation issue out. The documentation has been modified to specify that the <NETWORK DATA UPDATE FAILED - MAXSTRING> error relates to network activity - "An asynchronous network error occurred and updates sent over the network were lost because InterSystems IRIS/Caché on the server has encountered an attempt to specify or create a data string longer than the implementation allows (32,767 characters)."

What were your instances doing at the time you received this error and where did you find this error? I put a little time into trying to throw this error myself by manipulating some large strings from an ECP app server but wasn't able to reproduce it.

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