Alexandra Nitzschke wrote:
BTW... how about a block checksum that is checked just before writing a block and just after reading it? I know this would degrade performance, but I think we can afford that. Would it be possible to incorporate such code without having to do too much patching?
oracle has had an option for some time that uses read/only page protection for each page of the shared buffer area... when oracle knows it wants to modify a page, it un-protects it via a system call. this catches any wild writes into the shared buffer area as a memory protection fault.
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