RE: A question on table export

From: Asif Momen <asif_oracle_at_yahoo.com>
Date: Tue, 1 Jul 2008 09:47:43 -0700 (PDT)
Message-ID: <204673.99266.qm@web56607.mail.re3.yahoo.com>

Hi,
> Can we export a table and import into another table (which has the same
structure)?
> Both the tables are in the same schema.
No, not into another table. Why not insert directly into the destination table like: insert into dest select * from source;
Regards
Asif Momenhttp://momendba.blogspot.com

• On Tue, 7/1/08, Elliott, Patrick <patrick.elliott_at_medtronic.com> wrote: From: Elliott, Patrick <patrick.elliott_at_medtronic.com> Subject: RE: A question on table export To: "Elliott, Patrick" <patrick.elliott_at_medtronic.com>, "anuragdba_at_gmail.com" <anuragdba_at_gmail.com>, "ORACLE-L" <oracle-l_at_freelists.org> Date: Tuesday, July 1, 2008, 7:40 AM

I haven't worked with bulk inserts much, so anyone who has please feel free to respond with an improved solution using bulk inserts.
 
Pat
 

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Elliott, Patrick
Sent: Tuesday, July 01, 2008 9:28 AM
To:
anuragdba_at_gmail.com; ORACLE-L
Subject: RE: A question on table
export

The only reason that I can think of to import into the same schema is to maybe prevent the rollback segment from filling up undo or you are getting snapshot too old.  If you are having trouble with too many rows on the insert, then you just need to code the insert in pl/sql with intermediate commits.
 
DECLARE

  CURSOR c1 IS 
    SELECT * 
      FROM 

source_table;
  row_cnt NUMBER := 0;
BEGIN
  FOR r1 IN c1 LOOP
    INSERT INTO
destination_table
    VALUES (r1.col1, r1.col2, ...
r1.coln);
    row_cnt := row_cnt
+1;
    IF row_cnt > 1000
THEN
     
COMMIT;
      row_cnt :=
0;

    END IF;
  END LOOP;
  COMMIT;

END;
/
 
Just change the 1000 to a higher or lower number depending on your requirements.  Change source_table and destination_table to the real table names and col1, col2, .. to the real column names.
Pat
 

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Anurag Verma
Sent: Monday, June 30, 2008 6:10 PM
To:
ORACLE-L
Subject: A question on table export

I have an Oracle 9i (9.2.0.7.0) database. One question on table export.
Can we export a table and import into another table (which has the same structure)?
Both the tables are in the same schema.

Thanks,

-- 

Anurag Verma,
Database Administrator
ERCOT(Electric 
Reliability Council of Texas),
Texas 76574 
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Received on Tue Jul 01 2008 - 11:47:43 CDT