bulk insert from Java into Oracle

Question

I need to insert many small rows rapidly into Oracle. (5 fields).

With MySQL, I break the inserts into groups of 100, then use one insert statement for every group o

Answer 1

try it,

public Boolean inserTable(String fileName) {
    logger.info("Begin - " + this.getClass().getSimpleName() + "." + "inserTable");
        logger.info("File : " + fileName);
    try (Connection conn1 =  jdbcTemplate.getDataSource().getConnection();) {
        OracleConnection conn = ( OracleConnection ) conn1.getMetaData().getConnection();
        ScriptRunner sr = new ScriptRunner(conn);
        StringBuilder sBuffer = new StringBuilder();
        StringBuffer sb=new StringBuffer();
        String query = "Insert into TABLE_DATA (ID, DATA1, DATECREATED, CREATEDBY) Values ";
        String line = "";
        //Creating a reader object
        BufferedReader br = new BufferedReader(new FileReader(fileName),1024 * 1024 );
        while ((line = br.readLine()) != null) {
            //logger.info("Leyo linea : " + line);
            sb.append(query.concat("(").concat("TABLE_DATA_SQ.NEXTVAL,").concat(line.substring(0,6)).concat(",").concat("sysdate,").concat("'BDVENLINEA'").concat(");"));
            sb.append("\n");
        }
        sb.append("commit;");
        Reader reader = new StringReader(sb.toString());
        //Running the script
        sr.runScript(reader);
        reader.close();
        br.close();
        return true;
    } catch (FileNotFoundException e) {
        logger.error(e.getMessage(), e);
        throw new TechnicalException(e, e.getMessage());
    } catch (SQLException e) {
        e.printStackTrace();
        throw new TechnicalException(e, e.getMessage());
    } catch (IOException e) {
        e.printStackTrace();
        throw new TechnicalException(e, e.getMessage());
    } finally {
        logger.info("End   - " + this.getClass().getSimpleName() + "." + "inserTable");
    }
}