powershell - Register-ObjectEvent Event Subscription Uptime -

we have data dump come external entity on daily basis. once receive file, object event listener triggers, moves file 2 separate locations (one live, 1 backup) , calls ms sql stored procedure import file database.

the process , script seem function fine. file moves, , sql executed. however, every morning when check see if triggered, nothing triggered. check event-subscribers calling get-eventsubscriber , there no listeners registered. once register listeners , move file input location, runs fine.

i understand event subscriptions not persist through reboots, how long stay open? possible closing them? or time out?

$watchfolder = "\\server\c$\path\to\inbound\" $filter = "*.txt"  $fsw = new-object io.filesystemwatcher $watchfolder, $filter -property @{     includesubdirectories = $false     notifyfilter = [io.notifyfilters]'filename, lastwrite' }  $oncreated = register-objectevent $fsw created -sourceidentifier filemonitor -action {     $filepath = $event.sourceeventargs.fullpath     $filename = $event.sourceeventargs.name     write-host "source file: $filename"     $success = copyfile($filename, $filepath) #custom function copy file multiple destinations      if ($success) {         write-host "starting sql_job_name job"         set-location sqlserver:\sql\server\default\databases\msdb\         $execute_import = "exec dbo.sp_start_job n'sql_job_name';"         invoke-sqlcmd -suppressprovidercontextwarning -query $execute_import     } else {         write-host "something failed along way: `r`n"     } } 

as silly seems, learned here calling register-objectevent if powershell process closed, objectevent unregistered.

because nature of project required have always-on file listener, decided powershell not correct implementation us.

instead implemented windows service using .net libraries, same used here in powershell.

thanks petseral prompt answer.