Insert CLOB into Oracle database

Question

My question is: How do you get around the ORA-01704: string literal too long error when inserting (or doing anything in queries) with CLO

Answer 1

You are making it way to complicated.

Use a PreparedStatement and addBatch() for each clob in your list:

String sql = "insert  into " + tempTableName + " values (?)";
PreparedStatement stmt = connection.prepareStatement(sql);
for (String query : readQueries) {
  stmt.setCharacterStream(1, new StringReader(query), query.lenght());
  stmt.addBatch();
}
stmt.exececuteBatch();

No messing around with escaping strings, no problem with the length of the literals, no need to create temporary clobs. And most probably just as fast as using a single INSERT ALL statement.

If you are using a current driver (> 10.2) then I think the setCharacterStream() call and the creation of the Reader is not necessary either. A simple setString(1, query) will most probably work as well.