Run a batch in every other 15mins in the clock (i.e. clock time 00:15, 00:30, 00:45 01:00....).
Method 1 - create a
schedulable to run the batch every 15mins.
Pros: it allows me, in
execute()method of schedulable, to check if the batch is already scheduled or running so it can abort if needed.
Cons: I need to create 4 separate schedulable instances.
Method 2 - use
System.scheduleBatch() to run the batch every 15mins.
- Pros: no need to create 4 instances
- Cons: it seems no place/hook to allow me to check
if already scheduled or runningright before the batch starts.
No ideal solution, either way has opposite pros&cons.