Oracle RAC Node rebooted due to "VFS: file-max limit 65536 reached"

Issue

• Oracle RAC Node rebooted with the following messages in the kernel ring buffer (dmesg).

[178763.197155] VFS: file-max limit 6815744 reached
[178764.964469] SysRq : Trigger a crash
[178764.964511] BUG: unable to handle kernel NULL pointer dereference at (null)
[178764.964536] IP: [<ffffffff83c90f46>] sysrq_handle_crash+0x16/0x30
[178764.964564] PGD 0 
[178764.964575] Oops: 0002 [#1] SMP 

• Oracle RAC Node rebooted with the following messages in the cluster alert.log file.

kernel: VFS: file-max limit 65536 reached
logger: Oracle clsomon failed with fatal status 13.
logger: Oracle CRS failure. Rebooting for cluster integrity.