Oracle数据泵导入现有表

Question

我需要一种将数据从一个数据库复制到另一个数据库的有效方法。 两者均基于Oracle 11g。

1. 步骤：（重新）创建新表
2. 步骤：安装pl sql软件包
3. 步骤：使用expdp从数据库1导出表tab_old1和tab_old2
4. 步骤：使用impdp导入tab_new1和tab_new2数据库2
5. + x步骤：使用已安装的pl sql程序

挑战：pl sql过程已使用tab_new1和tab_new2。 因此，我在步骤1和2中都创建了两个表。在步骤3和4中，我仅导入和导出数据。 但是tab_new1和tab_new2还有其他列->导入失败。 我尝试创建没有新列的视图。

导入失败，并显示以下错误消息：

ORA-31693: Table data object "Schema"."tab_old1" failed to load/unload and is being skipped due to error:
ORA-31603: object “tab_old1” of type TABLE not found in schema “Schema” 

ORA-31693: Table data object "Schema"."tab_old2" failed to load/unload and is being skipped due to error:
ORA-31603: object “tab_old2” of type TABLE not found in schema “Schema” 

这些视图称为tab_old1和tab_old2，但它们当然不是TABLE类型的。

有任何想法吗？

如何从带有其他列的现有表中的tab_old1导入数据？

我不想在第一步中导出/导入表，对其进行重命名，然后再安装pl sqls过程。

你可以帮帮我吗？

编辑：

感谢您的回答。 我两次尝试了您的示例，但是remap_table函数对我不起作用。 导入：11.1.0.6.0版-64位生产。

编辑2：是的。 我的oracle版本似乎有问题。 remap_table函数将被忽略。 我可以像remap_table = not.existing / table这样写废话，而impdp对此不屑一顾。 好吧，我没有时间解决这个问题。 我必须努力工作。 无论如何，感谢您的帮助。

Answer 1

确定，所以您要使用content = data_only进行导入，并且已将tab_old1重命名为tab_new1并添加了几列？

指定导入时放置remap_table = tab_old1：tab_new1

只要新列可为空，这将起作用。

例如：

SQL> create table foo(id number);

Table created.

SQL> insert into foo select rownum from dual connect by level <= 5;

5 rows created.

SQL> commit;

Commit complete.

SQL> host expdp test/test tables=foo directory=data_pump_dir

Export: Release 11.2.0.2.0 - Production on Thu Nov 8 15:40:18 2012

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "TEST"."SYS_EXPORT_TABLE_01":  test/******** tables=foo directory=data_pump_dir 
Estimate in progress using BLOCKS method...
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 64 KB
Processing object type TABLE_EXPORT/TABLE/TABLE
. . exported "TEST"."FOO"                                5.031 KB       5 rows
Master table "TEST"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded
******************************************************************************
Dump file set for TEST.SYS_EXPORT_TABLE_01 is:
  /u01/app/oracle/admin/dtd64bit1/dpdump/expdat.dmp
Job "TEST"."SYS_EXPORT_TABLE_01" successfully completed at 15:40:30

SQL> delete from foo;

5 rows deleted.

SQL> alter table foo add (a varchar2(200));

Table altered.

SQL> alter table foo rename to foo2;

Table altered.

和你原来的错误？

SQL> host impdp test/test tables=foo directory=data_pump_dir content=data_only

Import: Release 11.2.0.2.0 - Production on Thu Nov 8 15:42:17 2012

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "TEST"."SYS_IMPORT_TABLE_01" successfully loaded/unloaded
Starting "TEST"."SYS_IMPORT_TABLE_01":  test/******** tables=foo directory=data_pump_dir content=data_only 
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
ORA-39034: Table TABLE_DATA:"TEST"."FOO" does not exist.
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.UPATE_TD_ROW_IMP [15] 
TABLE_DATA:"TEST"."FOO"
ORA-31603: object "FOO" of type TABLE not found in schema "TEST"

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "SYS.KUPW$WORKER", line 8641

所以重新映射..

SQL> host impdp test/test tables=foo remap_table=foo:foo2 directory=data_pump_dir content=data_only

Import: Release 11.2.0.2.0 - Production on Thu Nov 8 15:42:33 2012

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "TEST"."SYS_IMPORT_TABLE_02" successfully loaded/unloaded
Starting "TEST"."SYS_IMPORT_TABLE_02":  test/******** tables=foo remap_table=foo:foo2 directory=data_pump_dir content=data_only 
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
. . imported "TEST"."FOO2"                               5.031 KB       5 rows
Job "TEST"."SYS_IMPORT_TABLE_02" successfully completed at 15:42:37


SQL> select * from foo2;

ID     A
---------- ----------
     1
     2
     3
     4
     5