Enable/Disable Maintenanace Mode from SQLPLUS Session (Without adadmin)

We can enable or disable maintenance mode without using adutility (adadmin), Perform the same from SQLPLUS session.
Check the current status of Maintenance Mode:
select fnd_profile.value(‘APPS_MAINTENANCE_MODE’) from dual;
MAINT     =  MAINTENANCE MODE is ENABLED
NORMAL =  MAINTENANCE MODE is DISABLED
ENABLE maintenance mode:
sqlplus -s apps/apps @$AD_TOP/patch/115/sql/adsetmmd.sql ENABLE
DISABLE maintenance mode:
sqlplus -s apps/apps @$AD_TOP/patch/115/sql/adsetmmd.sql DISABLE