问题
I have some scheduled jobs in my SQL Agent:
- Job1, executing every 2 minutes
- Job2, executing every 10 minutes
- Job3, executing every 15 minutes
As you can see, multiple jobs can run simultaneously. When these jobs do run simultaneously, it is causing the CPU usage to go to 100%.
Is there a solution? Is there a way to control the number of jobs running concurrently? Note: I need these jobs to run approximately in their appropriate period.
回答1:
Use a session lock via sp_getapplock
You're asking for user-controlled concurrency and this is usually the best way.
This allows you to wait or abort if the lock is already held by another job. We use it in one or 2 places to stop multiple users forcing the same task to run overlapping. It works well.
来源：https://stackoverflow.com/questions/3968529/how-to-prevent-sql-server-jobs-to-run-simultaneously