Command to migrate Huge Library

Issue:
While migrating a huge library it might be failing for number of times. The export will fail due to huge number of files, hence unable to import it at destination site
Resolution:
Use the command in exact format as:
stsadm.exe -o export -cabsize 1024 -includeusersecurity -versions 4 -url 'https://mysite.url/oldcollection/myweb' -filename myweb.cmp

cabsize can be from 10 to 1024

Unable to run few scripts at one of a app server

Issue: 
While doing the deployment, I was unable to run few scripts at one of a app server and found error as could not locate to http://... site. The event error was "An exception occurred when trying to issue security token: Could not connect to http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc. TCP error code 10061: No connection could be made because the target machine actively refused it ::1:32843." with error ID 8306 and in ULS the similar error was available.
Resolution:
1) We found that the SharePoint Web Services pool was deleted or unavailable at that app server.
2) We created the SharePoint Web Services pool through following command:
$Type = [System.Type]::GetType("Microsoft.SharePoint.Administration.SPIisWebServiceSettings, Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c")
$Instance = $Type::Default
$Method = $Type.GetMethod("ProvisionLocal", "Instance, NonPublic", $null, @(), $null)
$Method.Invoke($Instance, $null)
$Method = $Type.GetMethod("Provision", "Instance, Public", $null, @(), $null)
$Method.Invoke($Instance, $null)
3)To get the Service Applications registered, execute the following script:
Get-SPServiceApplication | ForEach-Object {$_.Provision()} 
4) Start the SharePoint Web services application pool