Hello

I do use a registered DOA version in my Delphi application, and do experience errors with Oracle 21.

Error 1:
<TOracleDataset name>: Type mismatch for field '<field_name>', expecting DateTime actual: WideString

The <field_name> is a TIMESTAMP(6) in a table that also has three CLOB fields.
Happens when I query from my Delphi application:
select <field_name>, field2, field3, .... from <my_table>

Error 2:
A query with LOB's requires OCI8 mode, but OCI7 mode is used

Happens when I query the same table from my Delphi application:
select t.* from <my_table> t where t.rowid = chartorowid ....

DOA version:
4.1.3.5
Oracle Client:
11 and 19 (both 32 bit) - have not tried others
Oracle DB version:
21.3.0.0.0
Delphi:
10.1 (Berlin)

At your disposal for further info

Please advise

best regards
Altin