OMS password could by reset by running a scripts.How can I reset the SYSMAN password if I forgot it? To reset the password of SYSMAN to the default oem_temp, you will need to log on to SQL * Plus Worksheet as the OEM Repository ower. Then issue the following: UPDATE SMP_VDU_PRINCIPALS_TABLESET password = 'E5A264514813C63F09D3A127712E2AE229A8CF88724FF226'WHERE UPPER (principal_name) =' SYSMAN '; A script called vduResetSysman.sql, has been added to the OEMV2 installation, which contains this command This script resides in the "$ ORACLE_HOME. / Sysman / admin "Directory.