How to correctly set dm_bigsize in OBRM 7.3xx

Hi,

Actually, as of late, one of our environment start throwing ERR_NO_MEM. We decide to change the value of dm_shmsize and dm_bigsize. However, upon checking online docs, there only exist the docs for OBRM 7.5, where the version that we're using is 7.3

It seems like the maximum value for both dm_shmsize and dm_bigsize is 2GB in OBRM 7.3 (as oppposed to bigger max size in OBRM 7.5)

Attached is the DM pin.conf

It seems like the dm_shmsize is already max.

How can I increase the dm_bigsize? Should it be in the multiple of 1024? I have tried to set dm_bigsize to 2147482623, but DM could not start after that, so we revert back to original.