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What does "Maximum number of Apex classes scheduled concurrently" actually mean


I'm trying to write some Apex code to make sure I don't run into any govenor limits.  One of the limits is described as "Maximum number of Apex classes scheduled concurrently", limited to 100.

Presumably I need to look in AsyncApexJob, but what exactly should I be looking for?  All records with a status of Queued, Processing, Preparing and Holding?


Hi Carl,

Before scheduling any apex job you can count a number of batch jobs that are running concurrently at the moment. If the count is greater than 5 then avoid scheduling the batch job else schedule the job.

Below is the query;

if([select count() from AsyncApexJob where status IN ( 'Processing', 'Queued','Preparing')] < 5)
       //schedule the batch job using system.schedule method

Thanks for the reply.  Unfortunately it doesn't answer my question.  I understand that there is a limit of 5 for batch jobs, however I was asking about the limit of 100 concurrent Apex classes.  For example, does this mean that I can have as many concurrent jobs (e.g. future jobs) as I like as long as they are all the same class?