diff --git a/lib/core/settings.py b/lib/core/settings.py
index cbb779cd7..bfd2b4315 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -221,11 +221,14 @@ IS_WIN = subprocess.mswindows
 PLATFORM = os.name
 PYVERSION = sys.version.split()[0]
 
+# DBMS sample databases
+ORACLE_SAMPLE_DBS = ("BI", "HR", "OE", "OC", "PM", "IX", "SH", "SCOTT") # https://docs.oracle.com/cd/E11882_01/server.112/e10575/tdpsg_user_accounts.htm#BABHFGJF
+
 # DBMS system databases
 MSSQL_SYSTEM_DBS = ("Northwind", "master", "model", "msdb", "pubs", "tempdb")
 MYSQL_SYSTEM_DBS = ("information_schema", "mysql", "performance_schema")
 PGSQL_SYSTEM_DBS = ("information_schema", "pg_catalog", "pg_toast", "pgagent")
-ORACLE_SYSTEM_DBS = ("ANONYMOUS", "APEX_PUBLIC_USER", "CTXSYS", "DBSNMP", "DIP", "EXFSYS", "FLOWS_%", "FLOWS_FILES", "LBACSYS", "MDDATA", "MDSYS", "MGMT_VIEW", "OLAPSYS", "ORACLE_OCM", "ORDDATA", "ORDPLUGINS", "ORDSYS", "OUTLN", "OWBSYS", "SI_INFORMTN_SCHEMA", "SPATIAL_CSW_ADMIN_USR", "SPATIAL_WFS_ADMIN_USR", "SYS", "SYSMAN", "SYSTEM", "WKPROXY", "WKSYS", "WK_TEST", "WMSYS", "XDB", "XS$NULL")  # Reference: https://blog.vishalgupta.com/2011/06/19/predefined-oracle-system-schemas/
+ORACLE_SYSTEM_DBS = ORACLE_SAMPLE_DBS + ("ANONYMOUS", "APEX_PUBLIC_USER", "APEX_030200", "APPQOSSYS", "CTXSYS", "DBSNMP", "DIP", "EXFSYS", "FLOWS_%", "FLOWS_FILES", "LBACSYS", "MDDATA", "MDSYS", "MGMT_VIEW", "OLAPSYS", "ORACLE_OCM", "ORDDATA", "ORDPLUGINS", "ORDSYS", "OUTLN", "OWBSYS", "SI_INFORMTN_SCHEMA", "SPATIAL_CSW_ADMIN_USR", "SPATIAL_WFS_ADMIN_USR", "SYS", "SYSMAN", "SYSTEM", "WKPROXY", "WKSYS", "WK_TEST", "WMSYS", "XDB", "XS$NULL")  # Reference: https://blog.vishalgupta.com/2011/06/19/predefined-oracle-system-schemas/
 SQLITE_SYSTEM_DBS = ("sqlite_master", "sqlite_temp_master")
 ACCESS_SYSTEM_DBS = ("MSysAccessObjects", "MSysACEs", "MSysObjects", "MSysQueries", "MSysRelationships", "MSysAccessStorage", "MSysAccessXML", "MSysModules", "MSysModules2")
 FIREBIRD_SYSTEM_DBS = ("RDB$BACKUP_HISTORY", "RDB$CHARACTER_SETS", "RDB$CHECK_CONSTRAINTS", "RDB$COLLATIONS", "RDB$DATABASE", "RDB$DEPENDENCIES", "RDB$EXCEPTIONS", "RDB$FIELDS", "RDB$FIELD_DIMENSIONS", " RDB$FILES", "RDB$FILTERS", "RDB$FORMATS", "RDB$FUNCTIONS", "RDB$FUNCTION_ARGUMENTS", "RDB$GENERATORS", "RDB$INDEX_SEGMENTS", "RDB$INDICES", "RDB$LOG_FILES", "RDB$PAGES", "RDB$PROCEDURES", "RDB$PROCEDURE_PARAMETERS", "RDB$REF_CONSTRAINTS", "RDB$RELATIONS", "RDB$RELATION_CONSTRAINTS", "RDB$RELATION_FIELDS", "RDB$ROLES", "RDB$SECURITY_CLASSES", "RDB$TRANSACTIONS", "RDB$TRIGGERS", "RDB$TRIGGER_MESSAGES", "RDB$TYPES", "RDB$USER_PRIVILEGES", "RDB$VIEW_RELATIONS")