Oracle-L: RE: Re: Shell scripting

From: Kevin Lange <kgel_at_ppoone.com>
Date: Tue, 08 Oct 2002 08:23:35 -0800
Message-ID: <F001.004E34D4.20021008082335@fatcity.com>

Actually Jared, you can by setting up a sqlplus coprocess and using unix pipes. The routine below will get a parameter from the v$parameter table using sqlplus.

Kevin

get_db_parm()
{
unset vRETURNED_PARM
unset vRESPONSE

typeset -u vPARM

vPARM=$1

sqlplus -silent /NOLOG |&

  print -p 'set feedback off'
  print -p 'set echo off'
  print -p 'set heading off'
  print -p 'set pagesize 0'
  print -p 'connect internal'

read -p vRESPONSE
while [ "${vRESPONSE:-Z}" != 'Connected.' -a \

          "${vRESPONSE%ORA*}Z" != 'Z' ]
  do
    read -p vRESPONSE
  done

if [ "${vRESPONSE:-Z}" = Z ] ; then

return 1
fi

vTERMINATOR='ZZZZZ'

  print -p "SELECT UPPER(name)||':'||value t FROM v\$parameter"
  print -p "WHERE UPPER(name) = '"${vPARM}"'"
  print -p "UNION"
  print -p "SELECT '${vTERMINATOR}' t FROM dual"
  print -p "ORDER BY 1;"

read -p vRESPONSE

while [ "${vRESPONSE}" != ${vTERMINATOR} ] do
if [ "${vRESPONSE%%:*}" = $vPARM ] ; then

         vRETURNED_PARM=${vRESPONSE##*:}
      if [ "${vRETURNED_PARM%%\?*}Z" = Z ] ; then
        vRETURNED_PARM=${ORACLE_HOME}${vRETURNED_PARM#\?}
      fi

    fi
    read -p vRESPONSE
  done

print -p "exit"

  # Flush Buffer after exiting
  while [ $? -eq 0 ]
  do
    read -p $vRESPONSE
  done

vRETURNED_PARM=`echo $vRETURNED_PARM|sed "s/%/%%/g"`

printf "${vRETURNED_PARM}\n"

return 0
}

-----Original Message-----
Sent: Tuesday, October 08, 2002 10:24 AM To: Multiple recipients of list ORACLE-L

Omar,

If what you mean is:

"How do I send a value from sqlplus plus directly to a variable in my shell environment?"

You can't.

What you've done is the way it is usually done.

Another way to do it is to use the '&|' korn shell mechanism.

e.g.
sqlplus -silent scott/tiger@$ORACLE_SID |&

This allows you to send commands straight to sqlplus from the ksh command line, and retrieve the results of queries from the cmd line.

It's not as easy as it appears. I wrote a set of shell functions once upon a time to do this, and it gets more complex than you expect.

The method you are currently using works ok.

Of course, you could use Perl with DBI and avoid all this subshell nonsense.

Jared

On Tuesday 08 October 2002 01:23, Cyril Thankappan wrote:
> Sure

> THanks Omar

> But I was looking for a
> 'non-file based' solution :)

> Thanks anyway

> On Mon, 07 Oct 2002 Omar Khalid wrote :
> >hi
> >
> >well i think i did this once, you can read
> >the output of the SQL query into shell variables by
> >first redirecting the output of the SQL query to an
> >OS file and then reading the file and loading
> >the data in the file into shell variables.
> >
> >/* here is sample code to redirect the output of sql query to OS
> >file */
> >
> >#!/bin/sh
> >
> >CMD_FILE=sql_input.sql
> >LOC_FILE=output.log
> >
> > SQLCMD="connect internal ;
> > select * from sys.dba_users ;"
> > echo "$SQLCMD" > ${CMD_FILE}
> >
> > svrmgrl < ${CMD_FILE} > ${LOC_FILE} /* redirecting the
> >out of
> >svrmgrl to OS file */
> >
> >regards
> >'_-_'_-_'_-_'_-_'_-_'_-_'_-_'_-_'_-_'
> >Omar Khalid
> >Software Engineer
> >LMK Resources
> >Voice: 111-101-101*780
> >Mobile: 0333-510-4465
> >Web: www.lmkr.com
> >'_-_'_-_'_-_'_-_'_-_'_-_'_-_'_-_'_-_'
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > "Cyril
> > Thankappan" To: Multiple
> >recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> > <cyril_thank_at_redif cc:
> > fmail.com> Subject: Shell
> >scripting
> > Sent by:
> > root_at_fatcity.com
> >
> >
> > 10/04/2002 09:18
> > PM
> > Please respond to
> > ORACLE-L
> >
> >
> >
> >
> >
> >
> >Hi
> >
> >I wanted to select a column from a v$ table
> >
> >struggled with it
> >and finally came with a workaround as follows
> >
> >------------------------------------
> >
> >archived_log='$archived_log'
> >begin_seq=`sqlplus -s /nolog <<EOF
> >connect / as sysdba
> >set head off
> >set echo off
> >set feedback off
> >set verify off
> >select max(sequence#)-1 from v$archived_log ;
> >exit
> >EOF`
> >echo $begin_seq
> >
> >---------------------------------------
> >
> >However, the question is how to
> >'directly' take the output into a shell variable?
> >there 'shud be' a better workaround than this !
> >
> >Thanks
> >--
> >Please see the official ORACLE-L FAQ: http://www.orafaq.com
> >--
> >Author: Cyril Thankappan
> > INET: cyril_thank_at_rediffmail.com
> >
> >Fat City Network Services -- 858-538-5051
> >http://www.fatcity.com
> >San Diego, California -- Mailing list and web hosting
> >services
> >---------------------------------------------------------------------
> >To REMOVE yourself from this mailing list, send an E-Mail
> >message
> >to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and
> >in
> >the message BODY, include a line containing: UNSUB ORACLE-L
> >(or the name of mailing list you want to be removed from). You
> >may
> >also send the HELP command for other information (like
> >subscribing).
> >
> >
> >
> >
> >--
> >Please see the official ORACLE-L FAQ: http://www.orafaq.com
> >--
> >Author: Omar Khalid
> > INET: okhalid_at_lmkr.com
> >
> >Fat City Network Services -- 858-538-5051
> >http://www.fatcity.com
> >San Diego, California -- Mailing list and web hosting
> >services
> >---------------------------------------------------------------------
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> >in
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> >(or the name of mailing list you want to be removed from). You
> >may
> >also send the HELP command for other information (like
> >subscribing).

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Jared Still
  INET: jkstill_at_cybcon.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
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also send the HELP command for other information (like subscribing).
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Kevin Lange
  INET: kgel_at_ppoone.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
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Received on Tue Oct 08 2002 - 11:23:35 CDT