AIX HPUX how to remove password

To remove password in AIX,
Edit /etc/security/passwd, change the password to *
myaot2:
password = *

To remove password requirements for HPUX, edit this file /tcb/files/auth/o/oracle;

oracle:u_name=oracle:u_id#600:\
:u_pwd=*:\
:u_auditid#67:\
:u_auditflag#1:\
:u_exp#3024000:u_life#4838400:u_succhg#1150751962:u_unsucchg#1150691460:\
:u_pw_expire_warning#604800:u_pswduser=oracle:u_nullpw:u_pwchanger=root:\
:u_suclog#1150752396:u_suctty=/dev/pts/1:u_unsuclog#1150692078:u_unsuctty=ssh:\
:u_lock@:chkent:

Change value u_pwd=*:\

You also have to disable password aging for the specific account in SAM. Password access will be revoked & it will not lock the account then