Oracle as External data

Data Source Name
External data's name.
Server or Data File
Net name in Oracle.
Database Name
Null
Note:
1.If there exist following data types in oracle table:
BLOB, CLOB, NCLOB, BFILE
when tables are registed, error will occur.
Suggestion:
New a view to exclude these fields, and then register them in excel server.
2. Write and Mapping can be set only on non-view tables.
3. If ExcelServerRCID and ExcelServerRN are added in non-view table, mapping can be set in this table only.
ExcelServerRCID and ExcelServerRN are case-sensitive. ExcelServerRCID is 20 varchar. ExcelServerRN is INT.