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Don Burleson Blog 









Using SQL*Loader to Reorganize Oracle Tables

Don Burleson


Another approach to Oracle table reorganization is to offload the table rows using SQL*Plus into a delimited file. This file can then be sorted (or extracted with ORDER BY), and the rows reloaded into the SAP table with SQL*Loader. These step are very straightforward:

1.        Extract the rows with an SQL statement in SQL*Plus.

spool extract.lst


select field1||','||field2||','||field3

from table_name

order by column_name;


spool off;

2.        Reload the file using SQL*Loader. Below is the command to reload a table:

sqlload USERID=sapr3/sapr3 CONTROL=sap.ctl LOG=sap.lst ERRORS=9999999

Here is a sample SQL*Loader control file:



INFILE      'vbap.dat'

BADFILE     'vbap.bad'

DISCARDFILE 'vbap.dis'






  field1            position (1:4)     char,

  field2            position (6:9)     char,

  field3            position (11:45)   char


This SQL*Loader approach is not very popular because of the amount of time required to extract the row data to a flat file (called "punching" the table) and then sorting the row data.



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