11g增强了数据泵的NETWORK_LINK功能，使得远端的导入或导出也支持分区粒度。
在10g的时候，数据泵的NETWORK_LINK只支持表粒度：
[orat3@hpserver2 ~]$ expdp test/test network_link=ora10204 dumpfile=tpart.dp logfile=test.log directory=dd TABLES=t_part:p1 Export: Release 10.2.0.4.0 - 64bit Production ON Monday, 4 June, 2012 0:38:31 Copyright (c) 2003, 2007, Oracle. ALL rights reserved. Connected TO: Oracle DATABASE 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production WITH the Partitioning, OLAP, DATA Mining AND REAL Application Testing options ORA-39001: invalid argument VALUE ORA-39203: Partition selection IS NOT supported OVER a network link. |
很明显10g并不支持通过网络方式的分区选择功能。而且对于分区表而言，无论是导出还是导入，都是已一个整体完成的。
而在11g中，无论是导入还是导出，NETWORK_LINK方式都支持分区粒度：
solaris*orcl-/home/oracle$ expdp test/test network_link=t111g dumpfile=t_part_hash.dp directory=d_output nologfile=y TABLES=t_part_hash:sys_p61 Export: Release 11.2.0.3.0 - Production ON Mon Jun 4 08:24:54 2012 Copyright (c) 1982, 2011, Oracle AND/OR its affiliates. ALL rights reserved. Connected TO: Oracle DATABASE 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production WITH the Partitioning, Oracle Label Security AND REAL Application Testing options Starting "TEST"."SYS_EXPORT_TABLE_01": test/******** network_link=t111g dumpfile=t_part_hash.dp directory=d_output nologfile=y tables=t_part_hash:sys_p61 Estimate in progress using BLOCKS method... Processing object type TABLE_EXPORT/TABLE/TABLE_DATA Total estimation using BLOCKS method: 8 MB Processing object type TABLE_EXPORT/TABLE/TABLE . . exported "TEST"."T_PART_HASH":"SYS_P61" 5.476 KB 13 rows Master table "TEST"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded ****************************************************************************** Dump file set for TEST.SYS_EXPORT_TABLE_01 is: /home/oracle/t_part_hash.dp Job "TEST"."SYS_EXPORT_TABLE_01" successfully completed at 08:25:57 |
这个功能没有在新特性文档中体现，但是却是一个不错的功能提升。