How can we schedule class such that it will excute after every 50 mintues?what is the cron expression for every 50 minutes scheduler?

Hi Mohit,

Cron expression for scheduling batch in Salesforce
Cron expression

Every 30 minutes - '0 30 * * * ?'

Every hourly - '0 0 * * * ?'

Every 5 min - '0 5 * * * ?'

Every 10 min - '0 10 * * * ?'

Every 15 min - '0 15 * * * ?'

Every 20 min - '0 20 * * * ?'

Every 25 min - '0 25 * * * ?'

Every 30 min - '0 30 * * * ?'

like upto 55 or 59 your wish

Note: If you schedule your batch for every 5 min '0 5 * * * ?'. It means it will run every hours 5th minute.

It will not run every 5 minutes

If you want to run for every 5 min then you need to schedule 12 times with different different cron expression like for 5 min, 10 min, 15min like upto 60 min..

but you can use below code to schedule your batch for every 5o minutes

global class SelfSchedule implements schedulable
{
global void execute( SchedulableContext SC )
{

// do whatever it is you want to do here

SelfSchedule.start();

// abort me and start again
System.abortJob( SC.getTriggerId() );
}

public static void start()
{
// start keepalive again in 5 mins
Datetime sysTime = System.now().addSeconds( 3000);
String chronExpression = '' + sysTime.second() + ' ' + sysTime.minute() + ' ' + sysTime.hour() + ' ' + sysTime.day() + ' ' + sysTime.month() + ' ? ' + sysTime.year();
System.schedule( 'SelfSchedule ' + sysTime, chronExpression, new SelfSchedule() );
}

}

Hope it may Helps you

thanks