GDUL产品特性

C++编写，高性能

GDUL使用C++语言编写，比使用Java编写的类DUL工具速度要快得多。

导出800万行普通表测试（EXPDP格式，耗时20多秒）

terminal

GDUL> desc andy.t_big_table
object_id: 77494, dataobj#: 77494, cluster tab#: 0
segment header: (ts#: 4, rfile#: 4, block#: 14074))

Name                 Null?           Type    
-------------------- --------------- --------------
OWNER                                VARCHAR2(30)
OBJECT_NAME                          VARCHAR2(128)
SUBOBJECT_NAME                       VARCHAR2(30)
OBJECT_ID                            NUMBER   
DATA_OBJECT_ID                       NUMBER   
OBJECT_TYPE                          VARCHAR2(19)
CREATED                              DATE   
LAST_DDL_TIME                        DATE      
TIMESTAMP                            VARCHAR2(19)
STATUS                               VARCHAR2(7)
TEMPORARY                            VARCHAR2(1)
GENERATED                            VARCHAR2(1)
SECONDARY                            VARCHAR2(1)
NAMESPACE                            NUMBER    
EDITION_NAME                         VARCHAR2(30)

terminal

GDUL> unload table andy.t_big_table
 2016-12-06 13:20:43 unloading table "ANDY"."T_BIG_TABLE"...
 2016-12-06 13:21:05 unloaded 8099838 rows