expdp / impdp Import Export

1. Requirements: 10g oracle database on the windows need to be imported into the 10g Oracle database on Linux

2. Analysis: After use exp exported dmp file into Linux in Oracle

imp test/test@orcl full=y file=/home/oracle/exp20191017.dmp ignore=y

　　

3. Question: After importing the discovery table after the import was incomplete, missing seventeen table

4. Analysis TWO: table structure analysis of the log and find that it contains seventeen table has a field of type CLOB

5. Measures: After the query can not know imp command to import clob type of field, it would change a new command: expdp / impdp

Export steps:

Export Directory to establish a connection Oracle:. Note that this directory needs to be created manually

create directory dir as 'D:\test';

　　Then export the query directory listing:

select * from dba_directories;

　　If you find the same name will be deleted reconstruction dir:

drop directory dir;

　　Permission to this directory then licensed to test user:

grant read,write on directory dir to test;

　

. B then exit Oracle, derived directly from the command line:

expdp test/test directory=dir dumpfile=20191104exp.dmp logfile=20191104log.log　　

 This can be in D: \ test to view the exported file.

Then we look at import steps:

. A front and export as import command:

impdp wl/wl directory=dir dumpfile=20191104EXP.DMP REMAP_SCHEMA=test:wl EXCLUDE=USER 

　　Note: REMAP_SCHEMA = test: wl parameters, it is export and import user name

Error when importing:

ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-29283: invalid file operation
ORA-06512: at "SYS.UTL_FILE", line 536
ORA-29283: invalid file operation

　　This is a linux directory permissions is not enough, because the import is used when Oracle account, and when the new root directory permissions permission, we just need to cut back to give the root directory of authorized users can:

chown -R oracle:oinstall   /home/oracle/20191104

　　This can be directly imported.

As for the different versions of Oracle import and export, next time he says.

 

Work record:

1.expdp Export:
sqlplus /nolog

connect /as sysdba

create directory dir as 'D:\ziyuan';

select * from dba_directories;

drop directory dir;

grant read,write on directory dir to ZIYUAN;

SELECT SUM(s.BYTES)/1024/1024 "sizes(MB)" from dba_segments s where s.owner= 'ZIYUAN';

select count(*) from dba_tables t where t.owner='ZIYUAN';

oracle下
expdp ZIYUAN/ZIYUAN2015 directory=dir dumpfile=20191104exp.dmp logfile=20191104log.log

2.impdp import:
create directory dir as '/home/oracle/Desktop';

select * from dba_directories;

drop directory dir;

grant read,write on directory dir to MBZY;

SELECT SUM(s.BYTES)/1024/1024 "sizes(MB)" from dba_segments s where s.owner= 'ZIYUAN';

select count(*) from dba_tables t where t.owner='ZIYUAN';

impdp MBZY/MBZY directory=dir dumpfile=20191104EXP.DMP logfile=20191104log.log
impdp MBZY/MBZY directory=dir dumpfile=20191104EXP.DMP REMAP_SCHEMA=ZIYUAN:MBZY EXCLUDE=USER logfile=20191104log.log
impdp MBZY/MBZY schemas=certification directory=dir dumpfile=20191104EXP.DMP

impdp MBZY/MBZY schemas=ZIYUAN directory=dir dumpfile=20191104EXP.DMP logfile=imp.log

IMPDP USERID='SYS/ggoabak10@ggbak10 as sysdba' schemas=ZIYUAN directory=dir dumpfile=20191104EXP.DMP logfile=aa.log version=10.2.0.1.0