How to schedule the schedulable class for every one minute in salesforce?

Can you explain more why you want to schedule this every minute?

And you can do like as below : which executes every 10 minutes and

scheduledApexClassName m = new scheduledApexClassName(); String seconds = ’0′; //Execute at Zero Seconds String minutes = ’10,20,30,40,50′; //Execute at every 10th minute of hour String hours = ‘*’; // Execute Every Hour String dayOfMonth = ‘*’; // Execute Every Day of the Month String month = ’11′; //Execute only in November(11) String dayOfWeek = ‘?’; //Execute on all 7 days of the Week String year = ’2009′; //Execute only for year 2009 //Seconds Minutes Hours Day_of_month Month Day_of_week optional_year String sch = seconds + ‘ ‘ + minutes + ‘ ‘ + hours + ‘ ‘ + dayOfMonth + ‘ ‘ + month + ‘ ‘ + dayOfWeek + ‘ ‘ + year; //String sch = ’0 10,20,30,40,50 * * 11 ? 2009′; system.schedule(‘Registration Report’, sch, m); 

Thanks sfdev