Upgrade Database schema of ultralite in iOS

Hi,

I am trying upgrade schema of ultralite using sql script file in iOS. I am using the below statement to upgrade schema

"ALTER DATABASE SCHEMA FROM FILE".

I was able to upgrade ultralite successfully till iOS 8.1.1. But execution of the above statement is getting failed in iOS 8.2.

ExecuteStatement return bool value whether success/failure. So,I was unable to get the root cause or error.

Please help me to solve this issue.

Thanks,

Suman