sqlplus and dbms_output.put_line in shell script

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# 1  
Old 12-19-2007
sqlplus and dbms_output.put_line in shell script


I have created a pl/sql block utilises dbms_output.put_line. This script works fine when I call from sqlplus ie sqlplus @./scriptname but when I embed it within my shell script I get no output to screen so I end up with an empty spool file. I know it's executing successfully when called from the shell as I have feedback on and i get the "PL/SQL procedure successfully completed." message.My question is it possible to use dbms_output.put_line within a shell script and to spool the output to file?

# 2  
Old 12-19-2007
Please post your script
# 3  
Old 12-20-2007
Part of script thats causing me problems:

sqlplus -s /nolog <<EOF
set trimspool on
set line 500
set escape on
connect /as sysdba

spool hot_backup.cmd

  copy_cmnd constant varchar2(30) := 'cp';
  copy_dest constant varchar2(30) := '/u/homes/oradba/backup';

  dbname  varchar2(30);
  logmode varchar2(30);
  select name, log_mode
  into   dbname, logmode
  from   sys.v_\\\$database;

  if logmode <> 'ARCHIVELOG' then
                     'ERROR: Database must be in ARCHIVELOG mode!!!');
  end if;

  dbms_output.put_line('spool backup.'||dbname||'.'||
                       to_char(sysdate, 'ddMonyy')||'.log');

  -- Loop through tablespaces
  for c1 in (select tablespace_name ts
             from   sys.dba_tablespaces where tablespace_name='ALRX')
    dbms_output.put_line('alter tablespace '||c1.ts||' begin backup;');
    -- Loop through tablespaces' data files
    for c2 in (select file_name fil
               from   sys.dba_data_files
               where  tablespace_name = c1.ts)
      dbms_output.put_line('!'||copy_cmnd||' '||c2.fil||' '||copy_dest);
    end loop;

    dbms_output.put_line('alter tablespace '||c1.ts||' end backup;');
  end loop;

  -- Backup controlfile and switch logfiles
  dbms_output.put_line('alter database backup controlfile to trace;');
  dbms_output.put_line('alter database backup controlfile to '||''''||
  dbms_output.put_line('alter system switch logfile;');
  dbms_output.put_line('spool off');

spool off

set head on
set feed on
set serveroutput off


# 4  
Old 12-20-2007
set serveroutput on

set serverout on is missing in ur script
# 5  
Old 12-20-2007
UTL_FILE is better for this task, ex:
sqlplus -s / <<-EOF
set echo off 
set verify off
set feed off
set pagesize 0
set pause off
set linesize 4000
set trims on
set serveroutput on size 1000000
fichero utl_file.file_type;
utl_file.put_line(fichero,'LINE 1');
utl_file.put_line(fichero,'LINE 2');

# 6  
Old 12-20-2007
Thanks for your replys:

Serveroutput on only gives me the following "PL/SQL procedure successfully completed." and nothing else.

Klashxx: your example works fine, but we dont use utl_file_dir here and this is going to be a generic script that backs up approx 10 instances and I don't want to have to change my init.ora files as this will generate more paper work than its worth. Is there any way to get dbms_output to print to the screen when run from with the shell?
# 7  
Old 12-20-2007
small code

That's very strange

Try the following code, it worked for me:
sqlplus -s scott/tiger <<EOF
spool aaa.txt
spool off

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