Queued batch jobs limit

Question

I am confused by the asynchronous Apex limits. The limit for number of batch jobs in the flex queue is 100, but the max number for batch jobs queued or active concurrently is 5. So my question is would the following code hit the second limit or not?

Database.executeBatch(myClass1, 200);
Database.executeBatch(myClass2, 200);
Database.executeBatch(myClass3, 200);
Database.executeBatch(myClass4, 200);
Database.executeBatch(myClass5, 200);
Database.executeBatch(myClass6, 200);

If it does hit the limit, what is the recommended workaround?

Answer 1

As long as there are enough slots left in the flex queue, you won't get an exception. If you exceed the 105 limit (5 active plus 100 queued), then you'll get the exception you're expecting. If you need to check, you can always try-catch an AsyncException:

try {
    // do execute batch here
} catch(AsyncException e) {
    // Decide what to do here, report error, etc.
}