"One of the basic issues with subtransactions is that they increment XID – the global transaction ID." If the subtransaction is later rolled back, this is star

"One of the basic issues with subtransactions is that they increment XID – the global transaction ID." If the subtransaction is later rolled back, this is starting to sound like the kind of speculative execution information leak that led to the Spectre attack. I wonder if you could base a similar attack on this?