This article explains :-
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Known issues with SPOOL command and
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Some of the common SET commands used with SPOOL command
SCOPE
This article is intended for SQL*Plus users.
SPOOL command in itself is a simple command. The issues are usually due to
the incorrect SQL*Plus environment setting (like linesize, heading, echo etc).
Following are some of the commands that have an impact of the output from spool.
More information can be found in SQL*Plus User's Guide and Reference documentation.
DETAILS
SET NUMWIDTH XX
E.g. select 345.34 from dual;
set numwidth 2 ===> ##
set numwidth 4 ===> 345
set numwidth 5 ===> 345.3
set numwidth 6 ===> 345.34
set numwidth 10 ===>____345.34 (where _ is a space)
SET NEWPAGE {1|n|None}
Sets the number of blank lines to be printed from the top of each page to
the top title.
0 - places a formfeed at the beginning of each page (including the
first page) and clears the screen on most terminals.
NONE - SQL*Plus does not print a blank line or formfeed between the report
pages.
SET SPACE
Determines the spacing between columns.
E.g. set space 1 ===> Col1_Col2 (_ is a space)
set space 5 ===> Col1_____Col2 (_ is a space)
SET LINESIZE
Determines the length of the line. If the linesize is too small then the
records will wrap around to the next line and the output may not be readable.
SET PAGESIZE
Sets the number of lines per page. If set to 0, then there are no pages.
SET FEEDBACK
Displays the number of records returned by a query when a query selects at
least n records. ON or OFF turns this display on or off. Setting feedback
to zero is equivalent to turning it OFF.
SET HEADING
Controls printing of column headings in reports.
ON prints column headings in reports; OFF suppresses column headings.
SET VERIFY
Lists each line of the command file before and after substitution.
SET TERMOUT
When running a script containing SQL commands and you have spooled the
output and if you do not want to see the output on your screen, you can
also add SET TERMOUT OFF to the beginning of the file and SET TERMOUT ON
to the end of the file.
E.g.
test.sql :
set termout off
spool t.t0
select* from emp;
spool off
exit
When running this file from SQL*Plus using @test.sql, the output will not
be display on the screen.
SET DOCUMENT
After you type DOCUMENT and enter Return, SQL*Plus displays the prompt
DOC> in place of SQL> until you end the documentation. The "pound"
character (#) on a line by itself ends the documentation. If you have set
DOCUMENT to OFF, SQL*Plus suppresses the display of the block of
documentation created by the DOCUMENT command.
SET SQLPROMPT
If you do not want the SQL*Plus prompt to appear in the spooled file,
change the prompt to blank using set sqlprompt "".
SET TRIMSPOOL
Determines whether SQL*Plus allows trailing blanks at the end of each
spooled line. ON removes blanks at the end of each line. OFF allows
SQL*Plus to include trailing blanks.
E.g.
set numwidth 38
set NEWPAGE 0
set SPACE 0
set LINESIZE 80
set PAGESIZE 0
set FEEDBACK OFF
set HEADING OFF
set verify off
set doc off
set sqlprompt ""
set ECHO OFF
set trimspool on
Spool file not created in correct directory on Windows
Ensure that the SQL*Plus icon on the client PC desktop is created as a
shortcut and has the correct working directory (usually where you want
to create the spool file).
How does spool out know where to print on Unix
Set the following environment variables :
ORACLE_LPARGS='lpr arguments' e.g. -pr printername
ORACLE_LPPROG=/usr/local/bin/lpr'
SQLPATH and SPOOL
The SQLPATH registry entry or environment variable is used for the default
location/search path for stored SQL scripts and is not used for the SPOOL
command. This allows the user to be able to run scripts from SQL*Plus
without specifying a path. SPOOL command does not use this.