Data retrieval from History Database

Hi,

We have a script which fetches a column value from History Database and generates a report. After upgrade of History DB from V6 to v8, the script is not able to fetch the value. We are not able to figure out the reason as no error is thrown and just the value is empty.

When we directly try to fetch value with a sql query in script from main DB it is working. I have checked Timetrace databases where connection to History DB is present and Test connection is successful. Could anyone please point us where additional checks has to be done.

We are using below function to retrieve data from History DB.

History.Ihistorysource.getchangesasync

Regards,

Sameer