Security Issue while uploading documents to sharepoint library.

Hi All,

          I am getting security issue while uploading documents in a loop base on the logic using console app. After uploading about 100 documents. 

Error: The security validation for this page is invalid. Click Back in your Web browser, refresh the page, and try your operation again. 

I have already tried with  below options

1)   oWeb.AllowUnsafeUpdates = true;
2)  oWeb.Site.AllowUnsafeUpdates = true;
3)  oWeb.Site.WebApplication.FormDigestSettings.Enabled = false;

None of the work for me.

Immediate help will be greatly appreciated.