select s.sid, s.serial#, s.status, p.spid from v$session s, v$process p where upper(s.username) = upper('USERNAME') and p.addr (+) = s.paddr; alter system kill session '<s.sid>,<s.serial#>';
su - root
dd if=/dev/zero of=/swapfile1 bs=1M count=1000
mkswap /swapfile1
swapon /swapfile1
vi /etc/fstab/swapfile1 swap swap defaults 0 0
free -m