Did you figure what caused the 'CA' error? I see that this thread changes track a bit and the original 'CA' error issue is not discussed further. I have the same error reported for our product. When my process is run in parallel with index rebuild online, then I get the 'CA' error.

I am eager to know if you had overcome the problem.If so, please let us know how.It will be of immense help. Thanks again