try (Connection connection = DriverManager.getConnection(
            "jdbc:oracle:thin:@" + server + ":" + port, username, password);
            Statement statement = connection.createStatement();
            ResultSet resultSet = statement.executeQuery(sqlQuery)) {
        try {
            while (resultSet.next()) {

            }
        } catch (final SQLException e) {
            LOGGER.error("Exception while processing resultSet ", e);
        }

    }

Exception while creating/releasing Connection or Statement or ResultSet
    java.sql.SQLRecoverableException: ORA-01034: ORACLE not available
    ORA-27102: out of memory
    Linux-x86_64 Error: 12: Cannot allocate memory
    Additional information: 1
    Additional information: 32768
    Additional information: 8