I'm having a strange problem with dbWriteTable ... I have the dbWriteTable inside a batchloop. dbWriteTable(con,"mutual_funds",tmp_MF_Data_F,append=T,row.names=F) # append rows to the data table The data gets updated for the first 3 loops (out of say 100) but then there is no error and data doesn't update. The command is getting executed without a problem but the data does not get updated in the database. Any suggestions? I used debug I Revo and the dataframe that I am using to update MySQL seems to be fine. [[alternative HTML version deleted]]