Why Spring's jdbcTemplate.batchUpdate() so slow?

Question

I\'m trying to find the faster way to do batch insert.

I tried to insert several batches with jdbcTemplate.update(String sql), wher

Answer 1

Simply use transaction. Add @Transactional on method.

Be sure to declare the correct TX manager if using several datasources @Transactional("dsTxManager"). I have a case where inserting 60000 records. It takes about 15s. No other tweak:

@Transactional("myDataSourceTxManager")
public void save(...) {
...
    jdbcTemplate.batchUpdate(query, new BatchPreparedStatementSetter() {

            @Override
            public void setValues(PreparedStatement ps, int i) throws SQLException {
                ...

            }

            @Override
            public int getBatchSize() {
                if(data == null){
                    return 0;
                }
                return data.size();
            }
        });
    }