"Nigel Bishop" <[EMAIL PROTECTED]> writes:
> In the PG log file the errors were:
> 2006-08-03 21:49:18 BST FATAL: invalid frontend message type 50
> 2006-08-03 21:49:18 BST LOG: unexpected EOF on client connection
> 2006-08-03 21:49:18 BST LOG: unexpected EOF on client connection
These look to me like your client(s) having a problem, not the server.
Or as you say it could have been a network hiccup.
I think the SHMMAX setting was unrelated, and had your operator not
insisted on waving a dead chicken by rebooting the database, you'd
still not know that someone had changed SHMMAX ...
regards, tom lane
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TIP 5: don't forget to increase your free space map settings
