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Asked: 2026-06-17T16:27:14+00:00

I have a simple sql script file which only includes a SELECT statement. But

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I have a simple sql script file which only includes a SELECT statement. But the output of SELECT statement is huge (more than a few hundred thousands lines).

I cannot get output saved in a local file. I just changed my select statement to DESC and it worked fine, so the problem seems the size of output (select statement is something like SELECT * from TABLEX)

I will appreciate any comments on how to execute the select statement..

Thanks in advance

I updated my sql script file as below

SET SQLBLANKLINES ON
set echo off  
set feedback off  
set linesize 1000  
set pagesize 0  
set sqlprompt ''  
set trimspool on  
set headsep off  

spool output.csv  
select * from JM_WCEL_BTH_CURRENT  
SPOOL OFF  
EXIT

The output is below

D:\>sqlplus user/user@mydb @2.sql

SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jan 17 10:10:15 2013

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.


Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Data Mining and Real Application Testing options

  4
  5
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64
bit Production
With the Partitioning, Data Mining and Real Application Testing options

D:\>

There is nothing in the output file but numbers 4 and 5. I ended the process after a few minutes by pressing Ctrl + C. I also tried removing spooling process, there is no output to console as well.

I tried to run the sql query from ay other tool, it gives results in less than a second!

Any suggestions?

Thanks

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1 Answer

  1. Editorial Team

    We have successfully spooled 60 million rows to csv files using SQL*Plus, using something like this:.

    set echo off
set feedback off
set linesize 1000
set pagesize 0
set sqlprompt ''
set trimspool on
set headsep off

spool output.csv

select 'col1,col2,col3' from dual;

select col1 || ',' || col2 || ',' || col3
from bigtable;

spool off

    One problem that can happen with very long-running queries is the Oracle session times out, or the TCP connection gets clobbered by a firewall. If your query runs for hours you should probably look into these issues.

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