Maximum no records that a rfc call can fetch?

Hi All,

Iam fetching data from two different sap systems( two different sap server). I need to compare the datas from both the systems. I have written program in one system and using rfc call iam fetching data from the other system. Iam able to compare the values.

I want to know what is the maximum data or record can rfc can fetch from the system and also the maximum time that can rfc will take data without timed out error?

where we can find the parameter in the which the above info is stored in the system?