When using the Quick Browse (F3) feature in the DB Navigator for a table that is named after a reserved word, an "ORA-00903: Invalid Table Name" error will result.
The error is caused by quotes not included and not enclosing the table name. For example, create the USER table as follows:
Create table "USER" (rid number(20));
If the Quick Browse is used on this table, SQL Navigator does not enclose the table in quotes as shown causing the error:
FROM user a
Waiting for fix in a future release of SQL Navigator.