Swappartition max size

Hi, sorry if this is not strictly security related, but it resulted from a (possible) security problem (server was trashed by an intruder or at least from the outside - that has to be investigated). The current max. swap partition can be 2GB. What is recommended to do when more ram is installed to hold the core dump? Enough partitions to meet the actual ram size? A link to where to search is enough. TIA mike