In SQL Editor, using the Ctrl+Enter keys to execute SQL statements does not return data correctly on the datagrid, when there are comments immediately above the SQL statements.
However, everything works fine when using execute/compile button.
WORKAROUND:
1. Add a new line between comments (in /* ... */ format), and the SQL statements.
2. Execute using the execute/compile button
STATUS:
Waiting for fix in a future release of Toad for Oracle