RMAN-04014: startup failed: ORA-27104: system-defined limits for shared memory w

Total RAM: 65 GB

kernel parameter

kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.sem = 250 32000 100 128

but still oracle shows below error while starting database in nomount mode

RMAN> startup nomount;

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of startup command at 07/05/2022 13:53:50

RMAN-04014: startup failed: ORA-27104: system-defined limits for shared memory was misconfigured