TL;DR相同的SQL查询，当在休眠状态下执行时，需要70秒以上，当使用sql developer执行时，只需1.5秒
我发现，当一个特定的查询由hibernate执行时，它所花费的时间要比我在sql客户端中运行生成的sql要长得多。例如，在启用休眠静态后，我可以在日志中看到

• 执行2条JDBC语句花费67839913762纳秒 *;相当于1.13分钟

但是，如果我使用生成的SQL并运行它，它最多只需要1.5秒。
谁能告诉我造成这种差异的可能原因是什么？我的理解是，执行JDBC语句的时间完全取决于DB，对吗？如果SQL是相同的，为什么它在休眠时执行得这么慢？
单一实体类

@Entity
@Data
@AllArgsConstructor
@Builder
public class GpCustomer {
  @Id
  @Column(name = "CUSTNO")
  private String custno;

  @Column(name = "COMPANY")
  private String company;
}

示例库

@Repository
public interface GpCustomerRepository extends JpaRepository<GpCustomer, String> {}

示例服务

public Page<GpCustomer> findAllCustomers() {
    Pageable limit = PageRequest.of(0,10);
    return GpCustomerRepository.findAll(limit);
  }

更新：hibernate统计数据

Session Metrics {
    137214920 nanoseconds spent acquiring 1 JDBC connections;
    0 nanoseconds spent releasing 0 JDBC connections;
    18734658 nanoseconds spent preparing 2 JDBC statements;
    67839913762 nanoseconds spent executing 2 JDBC statements;
    0 nanoseconds spent executing 0 JDBC batches;
    0 nanoseconds spent performing 0 L2C puts;
    0 nanoseconds spent performing 0 L2C hits;
    0 nanoseconds spent performing 0 L2C misses;
    0 nanoseconds spent executing 0 flushes (flushing a total of 0 entities and 0 collections);
    16386 nanoseconds spent executing 2 partial-flushes (flushing a total of 0 entities and 0 collections)
}