[20160803]exp/imp语法问题.txt

--那个给我解析exp这种语法：

1.环境：
SCOTT@book> @ &r/ver1
PORT_STRING                    VERSION        BANNER
------------------------------ -------------- --------------------------------------------------------------------------------
x86_64/Linux 2.4.xx            11.2.0.4.0     Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

SCOTT@book> create table t as select * from dba_objects ;
Table created.

SCOTT@book> select count(1) from t;
  COUNT(1)
----------
     87047

2.使用exp：

$ exp scott/book tables=t  file=>(gzip >t.dmp.gz)
Export: Release 11.2.0.4.0 - Production on Wed Aug 3 10:42:12 2016
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Export done in ZHS16GBK character set and AL16UTF16 NCHAR character set
About to export specified tables via Conventional Path ...
. . exporting table                              T      87047 rows exported
Export terminated successfully without warnings.

$ ls -l t.dmp.gz
-rw-r--r-- 1 oracle oinstall 1008545 2016-08-03 10:42:15 t.dmp.gz
$ file t.dmp.gz
t.dmp.gz: gzip compressed data, from Unix, last modified: Wed Aug  3 10:42:12 2016

--这样确实建立1个压缩文件。

3.导入imp:
SCOTT@book> rename t to t_old;
Table renamed.

--//注意要使用小于号。
$ imp scott/book full=y  file=<(gunzip <t.dmp.gz)
Import: Release 11.2.0.4.0 - Production on Wed Aug 3 10:46:42 2016
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

Export file created by EXPORT:V11.02.00 via conventional path
import done in ZHS16GBK character set and AL16UTF16 NCHAR character set
. importing SCOTT's objects into SCOTT
. importing SCOTT's objects into SCOTT
. . importing table                            "T"      87047 rows imported
Import terminated successfully without warnings.

SCOTT@book> select count(1) from t;

  COUNT(1)
----------
     87047

SCOTT@book> select count(1) from t_old;
  COUNT(1)
----------
     87047

--expdp不行。

$ expdp scott/book tables=t DUMPFILE=>(gzip >t1.dmp.gz) directory=DATA_PUMP_DIR
Export: Release 11.2.0.4.0 - Production on Wed Aug 3 10:51:28 2016
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-39088: file name cannot contain a path specification