It is possible to prepare the batch script for a large problem that would not necessarily fit onto your computer. This would typically happen if your machine did not have enough memory for a large mesh.
In this case then set up a smaller, similar mesh and record the macro using the smaller mesh. Then edit the script and change the name of the mesh file that is imported to represent the original problem. For example, the code in question may look something like:
getSimulation().getImportManager().importFile(resolvePath("smallMesh.ccm"));
Simply change the file name in quotes in addition to any other changes you were needing to make on that file.