expdp异地备份

下面是network_link常用的三个环境测试

1，服务器端的数据导出到指定的客户端

2，不同数据库间迁移数据。

3，同一个数据库中不同用户之间迁移数据。

一：服务器端的数据导出到指定的客户端

1，修改客户端的TNSNAMES文件 
POWER1 = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.111.13)(PORT = 1521)) 
    ) 
    (CONNECT_DATA = 
      (SERVER = DEDICATED) 
      (SERVICE_NAME = power1) 
    ) 
  ) 
2，创建dblink 
SQL> CREATE PUBLIC DATABASE LINK "POWER1" 
  2  CONNECT TO scott 
  3  IDENTIFIED BY "Oracle" 
  4  USING 'POWER1'; 
 
Database link created. 
 
SQL> select * from dual@power1; 
 
D 
- 
X 
3，directory目录 
SQL> set lines 170 
SQL> col owner for a15 
SQL> col directory_name for a60 
SQL>  col directory_name for a30 
SQL> col DIRECTORY_PATH for a70 
SQL> select * from dba_directories; 
 
OWNER          DIRECTORY_NAME                DIRECTORY_PATH 
--------------- ------------------------------ ---------------------------------------------------------------------- 
SYS            DUMP                          /tmp 
SYS            TOAD_BDUMP_DIR                /u01/app/oracle/diag/rdbms/orcl11g/orcl11g/trace 
SYS            XMLDIR                        /u01/app/oracle/product/11.2/db_1/rdbms/xml 
SYS            DATA_PUMP_DIR                  /u01/app/oracle/admin/orcl11g/dpdump/ 
SYS            ORACLE_OCM_CONFIG_DIR          /u01/app/oracle/product/11.2/db_1/ccr/state 
如果不存在使用create directory创建再用grant授予用户权限 
4，导数据 
[oracle11g@rhel4 admin]$ expdp system/oracle directory=dump dumpfile=scott_test.dmp logfile=scott_log.dmp  network_link='power1' schemas=scott 
 
Export: Release 11.2.0.3.0 - Production on Tue Mar 26 18:22:28 2013 
 
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, OLAP, Data Mining and Real Application Testing options 
ORA-31631: privileges are required 
ORA-39149: cannot link privileged user to non-privileged user 
 
 
grant这个命令要在源端数据库上面执行 
SQL> GRANT exp_full_database TO scott;  
 
Grant succeeded. 
回到客户端上面  
 
 
[oracle11g@rhel4 admin]$ expdp system/oracle directory=dump dumpfile=scott_test.dmp logfile=scott_log.dmp  network_link='power1' schemas=scott REUSE_DUMPFILES=Y 
 
Export: Release 11.2.0.3.0 - Production on Tue Mar 26 19:42:29 2013 
 
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, OLAP, Data Mining and Real Application Testing options 
Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01":  system/******** directory=dump dumpfile=scott_test.dmp logfile=scott_log.dmp network_link=power1 schemas=scott REUSE_DUMPFILES=Y  
Estimate in progress using BLOCKS method... 
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA 
Total estimation using BLOCKS method: 2.129 GB 
Processing object type SCHEMA_EXPORT/USER 
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT 
Processing object type SCHEMA_EXPORT/ROLE_GRANT 
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE 
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA 
Processing object type SCHEMA_EXPORT/TABLE/TABLE 
Processing object type SCHEMA_EXPORT/PROCEDURE/PROCEDURE 
Processing object type SCHEMA_EXPORT/PROCEDURE/ALTER_PROCEDURE 
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX 
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT 
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS 
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT 
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS 
. . exported "SCOTT"."TEST"                              1.800 GB 19096576 rows 
. . exported "SCOTT"."DEPT"                              5.929 KB      4 rows 
. . exported "SCOTT"."EMP"                              8.562 KB      14 rows 
. . exported "SCOTT"."SALGRADE"                          5.859 KB      5 rows 
. . exported "SCOTT"."BONUS"                                0 KB      0 rows 
Master table "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded 
****************************************************************************** 
Dump file set for SYSTEM.SYS_EXPORT_SCHEMA_01 is: 
  /tmp/scott_test.dmp 
Job "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully completed at 19:46:1  
已经成功导出到客户端指定的位置