Enable/Disable Maintenance Mode without using ADADMIN
We can Enable or Disable Maintenance mode without using ADADMIN through following given procedure:
Enable Maintenance Mode:
$sqlplus apps/appspassword
SQL>$AD_TOP/patch/115/sql/adsetmmd.sql ENABLE
Disable Maintenance Mode:
$sqlplus apps/appspassword
SQL>$AD_TOP/patch/115/sql/adsetmmd.sql DISABLE