memory - APT FATAL -> Failed to fork

Monday, November 19, 2018

I saw a lot of questions regarding this, but mine seems a little different.

Here's what I receive:

/etc/cron.weekly/apt-xapian-index:
FATAL -> Failed to fork.
run-parts: /etc/cron.weekly/apt-xapian-index exited with return code 100

and

/etc/cron.daily/apt:
FATAL -> Failed to fork.

and

/etc/cron.daily/apt:
DB Update failed, database locked

I always have at least 600 MB of free RAM.
If I try to manually run sudo /etc/cron.daily/apt nothing happens.. the shell hangs.

What could be the problem?

EDIT: Ubuntu Server 14.04

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