Hello,

In logshipping,Generally you can take the full backup of Source Database and But in Target Server is not possible to take the full backup,As you know already Restoring means the database is not accessible. Standby means it is read-only( but users can query it – except when a log backup is being restored.)

But full back up is not possible in Target Server Database.

Please check the below link

http://www.sqlservercentral.com/Forums/Topic1268824-361-1.aspx#bm1299386

Thanks&regards,

DBA