An error occurred while retrieving the data - Handling this error from the UI

Hi All

we have tables that we query from and show in the UI. 

There are Stored Procedures/Jobs which are running frequently and updating these tables on a hourly basis. 

when there is SP running and the user uses the APPIAN UI - we get this "An error occurred while retrieving the data". This is happening as the query is getting timed out. This happend intermittently. Once the SP is done executing, the UI works without issues.

Is there a way to handle this in the UI without the using seeing an APPIAN error message?

Is there any option like NOLOCK in APPIAN that i can use to query the data (option available at the DB side to query even if there is a LOCK). 

Thanks in advance.