SQL Inbound Adapter Errors

Hi,

I created a BS with a SQL Inbound Adapter.

Query = "SELECT rowid, fname ,lname,datesent  
                   FROM labs
                   WHERE datesent IS NOT  NULL"

DeleteQuery = " update labs set datesent  =  Getdate() where rowid = ?"

KeyFieldName = "rowid"

i am getting the following errors.

"NOT assuming network disconnect error based on: Gateway failed: DropStatement."

"Skipping previously errored row '235'"

"Assuming network disconnect error based on: SQLState: (HY000) NativeError: [0] Message: [Microsoft][SQL Server Native Client 11.0]Connection is busy with results for another command"

Why is this not working?

Thanks