Paul Turton <no-2@xxxxxxxxxxxxxxxx> writes: > Looking at the source code it appears that the maximum stack limit is hard coded as 4194304 bytes for Windows builds. My query is why this number was picked? Is it to do with the maximum size the Windows Kernel will allow? Could I just increase the number and re-compile, or would that break other things? A bit of "git blame" archaeology says that that traces back to commit bf7737a938827608ce79586efe55c642c1a4a7d3 Author: Tom Lane <tgl@xxxxxxxxxxxxx> Date: Wed Jan 26 21:55:26 2005 +0000 On Windows, set the postmaster executable's stack size to 4MB, so that it agrees with the default value of max_stack_depth. So yeah, you could probably increase it in a custom build. However, I question a bit why you think you need to. IME hardly anyone ever fools with max_stack_depth, on any platform. regards, tom lane