Change of Jco Settings results in model found in negative cache

[Former Member]

Hi,

we have an WD application running on a NW6.40 Portal. I've updated Jco settings in PRD runtime. As of that moment the error "found in negative cache" arised. This error is specific for just one of 4 applications within the WD application. In this application, there are several models, which use each a Jco rfc connection to the same R/3 backend. This error is caused when initiating the application and just with one of the models.

We've tried restarting the J2EE, un- and redeployment. Nothing has solved this issue.

please advise. Any help is welcome.

Kind regards, Marijn Sponselee

[Former Member]

Hi,

Recheck the references of the DCs if model and UI are in different Dcs.

Regards

Ayyapparaj

[Former Member]

Hi,

no DC is used, this is a local WD app.

Thanks for your reply.

Marijn

[Former Member]

Hi,

try undeploy and redeployment of the application

Regards

Ayyapparaj

[Former Member]

Was already done. The message is:

Caused by: java.lang.ClassNotFoundException: com.asml.model4.Zmakt_Ext

The strange thing here is that in my WD Explorer i do see a model4, but without the Z, so in the code it is

com.asml.model4.Makt_Ext

What else can i do?

Message was edited by:

Marijn Sponselee

[Former Member]

Hi,

because there are so little answers on this on SDN.

The message was caused because the data model on the back end (R/3) had changed on the same day. Because i changed the Jco settings, the model had been reloaded by the J2EE engine and so the error says that the model used by the application no longer existed and the class was not found in the application code.

kind regards, Marijn Sponselee