Importing only the new rows in atable

Question

Hi,
in 8.1.7 version is there any option for imp that let only import the new lines in a table and keep the ancient rows ?
Many thanks.

Answer 1

Hi,
Just use the ignore=y clause when importing ...
USER1@ORACLE10> create table a (id number primary key);
Table created.
USER1@ORACLE10> insert into a values (1);
1 row created.
USER1@ORACLE10> insert into a values (2);
1 row created.
USER1@ORACLE10> insert into a values (3);
1 row created.
USER1@ORACLE10> commit;
Commit complete.
USER1@ORACLE10> select * from a;
        ID
         1
         2
         3
USER1@ORACLE10> connect user2/pass
Connected.
USER2@ORACLE10> create table a (id number primary key);
Table created.
USER2@ORACLE10> insert into a values (1);
1 row created.
USER2@ORACLE10> commit;
Commit complete.
USER2@ORACLE10> select * from a;
        ID
         1
USER2@ORACLE10> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
C:\>exp user1/pass file=test tables=a
Export: Release 10.1.0.2.0 - Production on Wed Jan 16 12:59:40 2008
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
server uses WE8ISO8859P1 character set (possible charset conversion)
About to export specified tables via Conventional Path ...
. . exporting table A 3 rows exported
Export terminated successfully without warnings.
C:\>imp user2/pass file=test tables=a ignore=y
Import: Release 10.1.0.2.0 - Production on Wed Jan 16 13:00:55 2008
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
Export file created by EXPORT:V10.01.00 via conventional path
Warning: the objects were exported by USER1, not by you
import done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
import server uses WE8ISO8859P1 character set (possible charset conversion)
. importing USER1's objects into USER2
. . importing table                            "A"
IMP-00019: row rejected due to ORACLE error 1
IMP-00003: ORACLE error 1 encountered
ORA-00001: unique constraint (USER2.SYS_C006313672) violated
Column 1 1 2 rows imported
Import terminated successfully with warnings.
C:\>sqlplus user2/pass
SQL*Plus: Release 10.1.0.2.0 - Production on Wed Jan 16 13:01:34 2008
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
USER2@ORACLE10> select * from a;
        ID
         1
2
3Cheers
Legatti