Access a table on Oracle 8 Ver into Oracle 10g

Question

Hello All,
Could you please tell me how to access a table directly sitting on Oracle 8.1.6 version database into Oracle 10G database. Appreciate your time.
Thanks & Regards,
Ariean.

Answer 1

Hello,
If you runninng from a client machine then you can use sql script to extract and use sqlldr to load from it. But if you want to extract using pl/sql procedure (utl_file) then you need to write a procedure which generates .csv format on 8i db server, then you ftp .csv formatted and use sqlldr. Setting up utl_file in 8i is easy but it might requires a restart. But in this case, write a small sql script to generate (spool) a data file (csv) and loaded up in 10g using sqlldr. Here a small script to genereate a sql script which in turn will generate "|" delimited datafile.
Just replace "MY_OBJECTS" with your table name and it will generate sql script which you can run from client to generate .csv ('|" ) delimited. You can change it to generate ","
{code}
SET pagesize 0
SET verify off
SET feedback off
SET linesize 400
SET termout off
SET TRIMSPOOL on
SET TRIMOUT ON
SPOOL mytest.sql
SELECT 'spool test.csv' FROM DUAL;
SELECT DISTINCT
'set termout off'
|| CHR (10)
|| 'set feedback off'
|| CHR (10)
|| 'set heading on'
|| CHR (10)
|| 'set pagesize 0'
|| CHR (10)
|| 'set linesize 800'
|| CHR (10)
|| 'set TRIMOUT on'
|| CHR (10)
|| 'set trimspool on'
|| CHR (10)
|| 'set long 2000'
FROM user_tab_columns
WHERE table_name = UPPER ('MY_OBJECTS');
SELECT 'select '
FROM DUAL;
SELECT (CASE
WHEN column_id = 1
THEN
(CASE
WHEN data_type LIKE '%CHAR%'
THEN
column_name
WHEN data_type = 'DATE'
THEN
'to_char(' || column_name || ',''DD-MON-YYYY'')'
ELSE
column_name
END)
ELSE
(CASE
WHEN data_type LIKE '%CHAR%' AND data_length = 4000
THEN
'||''|''||substr(' || column_name || ',1,4000)'
WHEN data_type LIKE '%CHAR%'
THEN
'||''|''||' || column_name
WHEN data_type = 'DATE'
THEN
'||''|''||to_char('
|| column_name
|| '|''DD-MON-YYYY'')'
ELSE
'||''|''||' || column_name
END)
END)
FROM user_tab_columns
WHERE table_name = UPPER ('MY_OBJECTS')
ORDER BY column_id;
SELECT '||''DELIM'''
FROM DUAL;
SELECT ' from MY_OBJECTS;'
FROM DUAL;
SELECT 'spool off'
FROM DUAL;
{code}
Regards
Edited by: OrionNet on Mar 18, 2009 10:15 AM