使用数据泵导入导出数据库

1.在本地创建转存目录:

oracle@linux:~> mkdir 0905 

oracle@linux:~>

2.连接数据库，并创建转存目录:

oracle@linux:~> sqlplus
zxdbp_test/zxdbp_test@zxin;

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Sep 5 15:42:39 2016

Copyright (c) 1982, 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

SQL> create directory dir_dump as '/home/oracle/0905';

Directory created.

SQL>

使用system用户给转存目录赋予读写权限

SQL> conn system

Enter password:

Connected.

SQL> grant read,write on directory dir_dump to zxdbp_test;

Grant succeeded.

SQL>

2.使用expdp命令对数据库zxdbp_test进行备份:

oracle@linux:~> expdp
zxdbp_test/zxdbp_test@zxin directory=dir_dump dumpfile=1.dmp logfile=1.log;

Export: Release 10.2.0.4.0 - 64bit Production on Monday, 05 September, 2016 15:54:38

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

Starting "ZXDBP_TEST"."SYS_EXPORT_SCHEMA_01":  zxdbp_test/********@zxin directory=dir_dump dumpfile=1.dmp logfile=1.log

Estimate in progress using BLOCKS method...

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

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/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/COMMENT

. . exported "ZXDBP_TEST"."TEST"                         11.89 KB     128 rows

Master table "ZXDBP_TEST"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZXDBP_TEST.SYS_EXPORT_SCHEMA_01 is:

  /home/oracle/0905/1.dmp

Job "ZXDBP_TEST"."SYS_EXPORT_SCHEMA_01" successfully completed at 15:55:17

oracle@linux:~>

3.使用impdp导入数据库:

先从数据库中删掉44条记录，

SQL> delete test where rownum<=44;

44 rows deleted.

SQL> commit;

Commit complete.

SQL> select count(*) from test;

  COUNT(*)

----------

        84

SQL>

然后恢复:

oracle@linux:~> impdp
zxdbp_test/zxdbp_test@zxin directory=dir_dump dumpfile=1.dmp table_exists_action=truncate logfile=2.log;     

Import: Release 10.2.0.4.0 - 64bit Production on Monday, 05 September, 2016 16:06:50

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

Master table "ZXDBP_TEST"."SYS_IMPORT_FULL_01" successfully loaded/unloaded

Starting "ZXDBP_TEST"."SYS_IMPORT_FULL_01":  zxdbp_test/********@zxin directory=dir_dump dumpfile=1.dmp
table_exists_action=truncate logfile=2.log

Processing object type SCHEMA_EXPORT/USER

ORA-31684: Object type USER:"ZXDBP_TEST" already exists

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

ORA-39153: Table "ZXDBP_TEST"."TEST" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of truncate

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

. . imported "ZXDBP_TEST"."TEST"                         11.89 KB     128 rows

Job "ZXDBP_TEST"."SYS_IMPORT_FULL_01" completed with 2 error(s) at 16:06:53

oracle@linux:~>

恢复完成，其中有一个参数table_exists_action=truncate是指针对存在的表的处理方式，我这里直接truncate掉，然后我们去查一下数据库:

SQL> select count(*) from test;

  COUNT(*)

----------

       128

SQL>