from: http://blog.csdn.net/leshami/article/details/38982563

故障解决
#根据上面的Solution调整limits.conf文件
linux_02:/etc/security # cp limits.conf limits.conf.bk
linux_02:/etc/security # vi /etc/security/limits.conf
linux_02:/etc/security # grep -v ^# /etc/security/limits.conf
oracle soft nproc 16384
oracle hard nproc 16384
oracle soft nofile 65536
oracle hard nofile 65536

oracle@linux_02:/users/oracle> ps -U oracle |wc -l
2714
oracle@linux_02:/users/oracle> lsof | grep oracle|wc -l
110694