How does the apex scheduler work in Salesforce?
Implementing the Schedulable Interface To schedule an Apex class to run at regular intervals, first write an Apex class that implements the Salesforce-provided interface Schedulable. The scheduler runs as system—all classes are executed, whether or not the user has permission to execute the class.
How can I find out when my apex job has been scheduled?
After the Apex job has been scheduled, you can obtain more information about it by running a SOQL query on CronTrigger and retrieving some fields, such as the number of times the job has run, and the date and time when the job is scheduled to run again, as shown in this example.
How do you schedule a class in apex?
Using the System.Schedule Method After you implement a class with the Schedulable interface, use the System.Schedule method to execute it. The scheduler runs as system—all classes are executed, whether or not the user has permission to execute the class. Use extreme care if you’re planning to schedule a class from a trigger.
Can you use schedulable interface with batch apex?
You can also use the Schedulable interface with batch Apex classes. The following example implements the Schedulable interface for a batch Apex class called batchable: An easier way to schedule a batch job is to call the System.scheduleBatch method without having to implement the Schedulable interface.
Can You update a scheduled job in apex?
If there are one or more active scheduled jobs for an Apex class, you cannot update the class or any classes referenced by this class through the Salesforce user interface.
Which is an example of schedulable interface in apex?
The following example implements the Schedulable interface for a class called mergeNumbers: To implement the above class, execute this example in the Developer Console. String sch = ’20 30 8 10 2 ?’; You can also use the Schedulable interface with batch Apex classes.