Bulk insert in Java using prepared statements batch update

Question

I am trying to fill a resultSet in Java with about 50,000 rows of 10 columns and then inserting them into another table using the batchExecute method of P

Answer 1

The batch will be done in "all at once" - that's what you've asked it to do.

50,000 seems a bit large to be attempting in one call. I would break it up into smaller chunks of 1,000, like this:

final int BATCH_SIZE = 1000;
for (int i = 0; i < DATA_SIZE; i++) {
  statement.setString(1, "a@a.com");
  statement.setLong(2, 1);
  statement.addBatch();
  if (i % BATCH_SIZE == BATCH_SIZE - 1)
    statement.executeBatch();
}
if (DATA_SIZE % BATCH_SIZE != 0)
  statement.executeBatch();

50,000 rows shouldn't take more than a few seconds.