prior process spawner to be cleaned up

When a prior process has died while spawning a background, the current process which is trying to spawn new a background must wait until the prior process state is cleaned up.

Wait Time: Usually 3 - 10 seconds

Parameter	Description
process_pid	process identifier (see `V$PROCESS.PID`) of the process whose state must be cleaned up.
process_sno	process serial number (see `V$PROCESS.SERIAL#`) of the process whose state must be cleaned up.