Active job running and running

Question:
Hi,
When a program is submitted in the background, is there a way to redirect it to another application server? My problem is this.
Someone executed the program in the background. The job kept running and running for awhile with a Active status. I was aksed to take a look at the job. I checked SM50 and saw no background job running from there. I then went to SM37, highlighted the job name, went to Job and then Check status; the message saids "0 jobs checked and 0 jobs corrected". Usually if the job was running and had a background process running in SM50 it would say "1 jobs checked and 0 jobs corrected". I checked SM12 and the locks on the tables were still locked and not yet released.
The backgroung process couldn't have been deleted because when I did the Check status there was no popup that saids the job got deleted and whether did I want to cancel it.
What do you suppose had happened? And how can this be avoided in production??
Can a user have mutiple accounts on different application servers where he could log in and submit the job, in which I could not see the process running if I had logged in another application server?? Even if the job was runnnig from a different appplication server, it should have completed in a timely manner.
I haven't encountered this because I have been very careful about it but some #@)(*#!% wanted to test my stupidity. Pardon my language.
Any suggestions??
Thanks a million
Answer:
The background job may be redirected to other server. Try to use transaction SM51 which lists all the servers.
Answer:
Is it possible to manually redirect it or the system does it by the way it manages resources on the system? If there is a way to manually redirect it, could you help on the steps??
Thanks
Answer:
when it's running it's too late to switch sevrers.
when planning, field "Target server" usually does the trick

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