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Re: Postgresql wont restart. Can I clear shared memmory segments without rebooting?

Before you execute "echo 3 > /proc/sys/vm/drop_caches", you'd better run "sync" first.:D

Mitchell Laks write:
On 02:39 Tue 05 Jan     , Stan Hoeppner wrote:
Try these:

To free pagecache:

# echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:

# echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:

echo 3 > /proc/sys/vm/drop_caches

this was very helpful. Exactly what I was looking for. I was able to read more about this
and hopefully next time it happens, I will understand how to proceed.
I was able to look this info about pagecache and shared memory up and learn about it!

Thank you very much!

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