# 数据库中的系统用户
select username from dba_users;
# 数据库中的非系统用户
select username from dba_users where username not in
('SYS'
,'SYSTEM'
,'OUTLN'
,'FLOWS_FILES'
,'MDSYS'
,'ORDSYS'
,'EXFSYS'
,'DBSNMP'
,'WMSYS'
,'APPQOSSYS'
,'APEX_030200'
,'ORDDATA'
,'CTXSYS'
,'ANONYMOUS'
,'XDB'
,'ORDPLUGINS'
,'SI_INFORMTN_SCHEMA'
,'OLAPSYS'
,'ORACLE_OCM'
,'XS$NULL'
,'MDDATA'
,'DIP'
,'APEX_PUBLIC_USER'
,'SPATIAL_CSW_ADMIN_USR'
,'SPATIAL_WFS_ADMIN_USR');