If I have a scheduled process flow, say, "Job 1." If Job 1 runs every day, and for some reason, it takes a while to run due to database issues, or something malfunctioning, how can I ensure Job 1 does not start running while it is already currently being run?

This message has been edited. Last edited by: Kerry,

use the same method that most systems use.

Write a lock file and check if it exists or if it contains a certain value.
Then terminate the job if it has the wrong value.

Something like

! STATE d:\temp\lock.lck
-RUN
-IF &RETCODE EQ 0 GOTO ENDJOB;
-*
FILEDEF LOCK DISK d:\temp\lock.lck
-RUN
-WRITE LOCK Y
-*
-* YOUR CODE GOES HERE
-*
!DEL d:\temp\lock.lck
-ENDJOB