Seneca Cunningham <tentra@xxxxxxxxx> writes: > No, I've only dealt with 10.4. From what I've read Apple changes shm > configuration methods every couple 10.X or so. Yeah, they've changed the behavior at least three times :-(. According to our notes at http://www.postgresql.org/docs/8.2/static/kernel-resources.html the current configuration file layout was introduced at 10.3.9, but sometime later than that they changed the implementation in ways that broke a lot of people's sysctl.conf files (ignoring the settings if SHMMAX isn't exactly a multiple of 4K was one particularly unpleasant and stupid change). There was a period where we didn't know about that restriction and the must-set-all-five rule and consequently came up with a lot of cargo-cult pseudo-science about what worked in 10.4 and what didn't. But I believe the info given on the page above is complete and accurate. Until Apple changes it again ... regards, tom lane