Java iView Runtime in WAD iview

Hi experts,

We are experiencing strange issue with one of WAD query iView (BI) in portal.

Earlier when we launched this iview through portal, it was giving the error very rarely.

But the repetation is increased and facing the issue again & again.

The issue is as follows:

When we try to execute an iView from portal the loading circle rotates for 50 seconds and throws message Java iView Runtime, no other information or any Exception ID.

When we run the same BI query at back end it gives result in 80 seconds.

The data pulled from back end is huge, but portal throws error.

Can anybody help on this? There is no specific error text or ID shown to see logs.

regards

Kedar Kulkarni