Your process may be the long way around if you have little or no experience with LO macros. It may be better to dump the data from the Oracle DB and import into the database you are using (not stated as Base is NOT a database). HSQLDB embedded is not recommended.
As for direction with your request, cannot give specifics as this depends entirely on the actual connection and data to be moved around. Do not have Oracle access currently but did test some time back with a resulting problem - slow initial access ( around 4 minutes). See this post → base to oracle database connection slow. Also, see bug report noted in comments.
Did not use connection in basic for Oracle but have for other databases. See → How do I connect to SQL server in a macro in Windows. Toward the end of my answer is a link to the Pitonyak document which contains connection information and at the end another link to the use of that code for a MSSQL connection (ALL DB connections are similar).
For SQL, some samples can be found here → In base Convert Query to macro with a few links in the answer pointing to related information.
If you are looking for specifics to the actual URL string, only you have that information. That depends upon the connector used (your code shows JDBC but original question never stated) and the location and port of the database. For explanation (and how I did my original testing) refer to Connecting to Oracle Database. This may also be of help → JDBC Driver Connection URL strings.
Can provide the driver class name I used for JDBC -