ulimit: open files: cannot modify limit

Hello,

I'm trying to upload new agent 12c to OEM 12.1.0.4. And found the error :

[oracle@daredevil bin]$ ./emctl upload agent

<AGENT_HOME>/core/12.1.0.4.0/bin/emctl: line 444: ulimit: open files: cannot modify limit: Operation not permitted

[oracle@daredevil bin]$ ./emctl pingOMS

<AGENT_HOME>/core/12.1.0.4.0/bin/emctl: line 444: ulimit: open files: cannot modify limit: Operation not permitted

Then I check the ulimit -a :

[oracle@cddspdb2 bin]$ 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) 540672

max locked memory       (kbytes, -l) 32

max memory size         (kbytes, -m) unlimited

open files                      (-n) 1024