[oracle@localhost ~]$ ulimit -Sn
1024
[oracle@localhost ~]$ ulimit -Hn
1024
[oracle@localhost ~]$ cat /etc/passwd|grep oracle
oracle:x:1001:1001::/home/oracle:/bin/bash
[oracle@localhost ~]$ cat /etc/group|grep oins
oinstall:x:1001:
[oracle@localhost ~]$ cat /etc/security/limits.d/10-oracle.conf
@oinstall hard nofile 1024
@oinstall soft nofile 65536
@oinstall hard nproc 2047
@oinstall soft nproc 16384
@oinstall hard stack 10240
[oracle@localhost ~]$
# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 31536
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 31536
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited