Update BDC service Throttling size

Add-PSSnapin "Microsoft.SharePoint.PowerShell"

 $bdcAppProxy = Get-SPServiceApplicationProxy | where {$_ -match "BDC Service"}

 Get-SPBusinessDataCatalogThrottleConfig -Scope Database -ThrottleType Items -ServiceApplicationProxy $bdcAppProxy

 $throttleDb = Get-SPBusinessDataCatalogThrottleConfig -Scope Database -ThrottleType Items -ServiceApplicationProxy $bdcAppProxy

Set-SPBusinessDataCatalogThrottleConfig -Identity $throttleDb -maximum 8000000 -default 4000000