Forum Discussion
datasource change taking forever
I have a power bi report that has oracle as source, i just changed the connection from production to a test environment schema, in data source settings, then hit apply changes, i see the attached message and its just says evaluating ....
what is happening behind the scenes and why is it taking forever ?
When you changed the connection Power BI panicked and threw away all the meta data it had accumulated for the prior setup. Now it is starting over and collecting all the meta data anew. I really wish they would find a better way to do this.
5 Replies
- lbendlin
Super User
When you changed the connection Power BI panicked and threw away all the meta data it had accumulated for the prior setup. Now it is starting over and collecting all the meta data anew. I really wish they would find a better way to do this.
- lbendlin
It is information about the structure of the data, rather than the data itself. So it lists field types, field sizes, indexes, relationship keys etc. A semantic layer, if you will.