I would say that the number of lines of the ISFLOG dataset is <too> large
there are too many ways to limit the storage that can be acquired by Your process
and in any case even if the limit is raised there is always a possibility that it could be hit again
better redesign the process
and SPEAK TO YOUR SUPPORT, they know what limits have been put in place
another consideration ...
the snippet You posted is completely unintelligible
the way it is written it will rewrite the ISFLOG repeated for the numbers of lines