Hi, exist a possibility write a raw object into a mysql blob column? My first trial and a second with a rawToChar after .jserialize didn't work. mobj <- .jserialize(model) > str(mobj) raw [1:203761] ac ed 00 05 ... sqlstring=paste("Insert into testtable (varname,number,model) values(",modelName,",",modelID,",",mobj,")",sep="",collapse="") #con is a RJDBC Connection dbSendUpdate(con,sqlstring) Thanks for advance Christian