Coldfusion 10 iis process restart every 900 seconds

Dear All CF GURU,

There have been a bug that troubling me.

I have a mysql dump process as code below and it will keep restart the process around every 900 seconds.

<cfsetting requesttimeout="72000">
<cfquery name="backupdb" datasource="main">
SELECT schema_name FROm information_schema.SCHEMATA where schema_name <> "information_schema" and schema_name <> "mysql"
</cfquery>
<cfloop query="backupdb" >
<cfset dts = backupdb.schema_name>
<cfset currentDirectory = "C:\DAILYBACKUP\"& dts>
<cfif DirectoryExists(currentDirectory) eq false>
<cfdirectory action = "create" directory = "#currentDirectory#" >
</cfif>
<cfset filename=dts&"_"&dateformat(now(),'YYYYMMDD')&"_"&timeformat(now(),'HHMMSS')&"_"&GetAuthUser()&"_DAILY.sql">
<cfset currentdirfile=currentDirectory&"\"&filename>
<cfexecute name = "C:\Program Files\MySQL\MySQL Server 5.6\bin\mysqldump"
    arguments = "--user=root --password=xxxxxx #dts#" outputfile="#currentdirfile#" timeout="3600">
</cfexecute>
</cfloop>

<cfzip source="C:\DAILYBACKUP" action="zip" file="C:\DAILY_BACKUP_#dateformat(now(),'YYYYMMDD')#_#timeformat(now(),'HHMMSS')#.zip" overwrite="yes">

<cfdirectory action="delete" directory="C:\DAILYBACKUP\" recurse="yes">

As picture below, it has run the cfexecure for 4 times before the whole process end.

The process wil ltake around 1 to 2 hours and as in server monitor, it will start a new same process every 900 seconds.

The process is run through schedule task but i try with IE still facing the same issue.