no locks available

[Bob Davis]

Hi,

I'm seeing this error in my log file:

(hostname) sendmail[1599]: NOQUEUE: SYSERR(root): db_map_open: cannot lock /etc/mail/aliases.db
(hostname) sendmail[1599]: NOQUEUE: SYSERR(root): cannot lockf(/etc
/mail/aliases.db, fd=7, type=1, omode=37777777777, euid=0): No locks available

Can anyone help?
Thanks,

[harry d brown jr]

Bob,

I've never seen that error message, but maybe it's related to the number of semaphores? You can safely bump the semaphores up, but it does require a reboot.

live free or die
harry

[Helen French · Accepted solution]

Hi,

This can be a kernel parameter issue. Increase the value of ninode, nfile, nproc and nflocks. Check this out:

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=eb57e7c907136e3981/screen=ckiDisplayDocument?docId=200000039545511

HTH,
Shiju

[Bob Davis]

I believe that the nfile setting is limited by memory, but is there any adverse effect of having these settings too high?