Hi, We are migrating SSRS 2008 R2 reports to SSRS 2012 SP2. (PS. SSRS 2012 SP2 has been applied.) Everything went smooth expect some reports which were using reporting services. These reports have some drilin-through actions and was passing in a huge xml parameter. I referred to some other posts in which there were also some similar issues like "The Uri string is too long." but they're different. My reports can be opened and the error only occurred when accessing the drill-through actions. As I know, Microsoft has provided the fix for the known issue "The Uri string is too long." in sp1 but it looks it can't cover this kind of situation since I have installed the SSRS SP 2. Is there any solution? In addition, there's no such issue on SSRS 2008 R2.
Thanks,
onizga