Hi, I;m upgrading Appian 7.7 to 7.8. I finished migrtion instruction

Looks like you might be missing the .dodeploy files in the ear and search folders. These don't get created by default when you install appian.

Review bullet #3 and #4 in the following link:

forum.appian.com/.../Configuring_JBoss.html

I created dodeploy files and application has started. Unfortunately other problem came out - Everething is in place except Rules, Data Stores and Applications. Appian works, processes created eriler are in place but all applcations, all datastores and rules are missing (in rules there is only Examples folder). I am sure that I copied all the highest number .kdb files. How can I restore rules, applications and data stores from 7.7 instance?

I made some tests and Processes also are corrupted. All processes are listed but when I try to view them in designer there is an error message: An unknown error has occured while loading the process model

If the applications, rules, data stores didn't migrate, then it sounds like you missed the pd.kdb. This would break your processes too.

There's 2 different types of .kdb in the <APPIAN_HOME>/server/collaboration/gw1/ folder, so that's easy to miss

(there are 2 in notifications, also, so check that one too)

I mean't dc.kdb, not pd

You are right. I missed out dc.*.kdb file. It is working now. Many many thanks!