benpung
asked on
pass pl/sql variable to unix
ok, here's what i need to do. i have a unix shell script (hp unix, ksh shell) that is started each night via the crontab. i need the shell script to start, set shell variable, log into a database, check an oracle 8.1.7 table for a flag value. pass the value of this flag back to the unix shell script variable.
start shell script.
set unix variable.
log into oracle 8.1.7 (on same box).
check table for flag.
send flag value out to unix
if unix variable is x, do y
if unix variable is a, do b
so, is this possible? can you send the value of a pl/sql variable out to unix? please help.
start shell script.
set unix variable.
log into oracle 8.1.7 (on same box).
check table for flag.
send flag value out to unix
if unix variable is x, do y
if unix variable is a, do b
so, is this possible? can you send the value of a pl/sql variable out to unix? please help.
Or if like some (me included), you dont have access to the utl_file_dir, or to change it, you can do the following.
In your unix script do the following
VAR=`sqlplus -s user/password @script`
In your plsql script, put the following sqlplus commands at the top.
-------------------------- ----
set echo off
set feedback off
set serveroutput on
begin
dbms_output.put_line(plsql _var);
end;
-------------------------- -------
In your unix script do the following
VAR=`sqlplus -s user/password @script`
In your plsql script, put the following sqlplus commands at the top.
--------------------------
set echo off
set feedback off
set serveroutput on
begin
dbms_output.put_line(plsql
end;
--------------------------
ASKER
thanks for the posts. i'll work with these ideas some when i get in the office tomorrow. please check back!
ASKER
ok, i've tried morphman's suggestion above. i've posted my two scripts below. when i run the .ksh unix shell script, it just hangs. it logs in to the database and just sits there. can someone tell me what i'm doing wrong?
.ksh shell script******************** ***8
# . /oracle/local/scripts/orac le.kshrc needs to be ran in order
# for the SQL code to be understood.
. /oracle/local/scripts/orac le.kshrc
# Environment variables
DBINSTANCE=mydatabase
LOGON_NAME=mylogon
LOGON_PASSWD=mypswd
SQL_DIR="/home/ehsitdev/EI MS/sql"
# Change directory to the xml directory. This directory holds the sql script.
cd $SQL_DIR
# Connect to Oracle database
inst $DBINSTANCE
# Start sqlplus, log in to database, and initiate error log file
B_COMPLETE_VAR=`sqlplus -s $LOGON_NAME/$LOGON_PASSWD @rover_complete.sql`
--it seems to be hanging here.
EXIT
echo B_COMPLETE_VAR
sql script ************************** *******
SET ECHO OFF;
SET FEEDBACK OFF;
SET SERVEROUTPUT ON;
DECLARE
c_holder VARCHAR2 (5);
BEGIN
SELECT reqcompflag
INTO c_holder
FROM ems_owner.report_requests
WHERE reqcompflag = 'N';
IF c_holder = 'N'
THEN
DBMS_OUTPUT.put_line ('N');
END IF;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
DBMS_OUTPUT.put_line ('Y');
WHEN TOO_MANY_ROWS
THEN
DBMS_OUTPUT.put_line ('N');
END;
/
.ksh shell script********************
# . /oracle/local/scripts/orac
# for the SQL code to be understood.
. /oracle/local/scripts/orac
# Environment variables
DBINSTANCE=mydatabase
LOGON_NAME=mylogon
LOGON_PASSWD=mypswd
SQL_DIR="/home/ehsitdev/EI
# Change directory to the xml directory. This directory holds the sql script.
cd $SQL_DIR
# Connect to Oracle database
inst $DBINSTANCE
# Start sqlplus, log in to database, and initiate error log file
B_COMPLETE_VAR=`sqlplus -s $LOGON_NAME/$LOGON_PASSWD @rover_complete.sql`
--it seems to be hanging here.
EXIT
echo B_COMPLETE_VAR
sql script **************************
SET ECHO OFF;
SET FEEDBACK OFF;
SET SERVEROUTPUT ON;
DECLARE
c_holder VARCHAR2 (5);
BEGIN
SELECT reqcompflag
INTO c_holder
FROM ems_owner.report_requests
WHERE reqcompflag = 'N';
IF c_holder = 'N'
THEN
DBMS_OUTPUT.put_line ('N');
END IF;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
DBMS_OUTPUT.put_line ('Y');
WHEN TOO_MANY_ROWS
THEN
DBMS_OUTPUT.put_line ('N');
END;
/
you probably need to put an
exit
at the end of the sql script.
exit
at the end of the sql script.
ASKER
ok, that seems to work. now when i do it though, the value of my unix variable is:
Y Input truncated to 5 characters
do you know which setting i have to change in oracle so i don't get the "Input truncated to 5 characters" after my value?
Y Input truncated to 5 characters
do you know which setting i have to change in oracle so i don't get the "Input truncated to 5 characters" after my value?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
alternativeley
dbms_output.put_line('###' ||var||'## #');
and get it from your script like this
var=`sqlplus log/pass @script.sql`
var2=`echo ${var} | cut -d# -f3`
We use this to prevent losing spaces and other characters.
dbms_output.put_line('###'
and get it from your script like this
var=`sqlplus log/pass @script.sql`
var2=`echo ${var} | cut -d# -f3`
We use this to prevent losing spaces and other characters.
sorry should be
var2=`echo ${var} | cut -d# -f4`
var2=`echo ${var} | cut -d# -f4`
ASKER
it's working great now. just what i needed. thanks.
Unix has excelellent tools for reading flat files.
An example:
procedure YOUR_PROC is
sasha SYS.UTL_FILE.FILE_TYPE;
sanjeev VARCHAR2(1800);
begin
sasha := UTL_File.Fopen('D:\staff\c
LOOP
UTL_File.get_line(sasha,sa
-- FORMAT THE DATA in/from buffer sanjeev and insert in Oracle DB using INSERT statement
END LOOP
EXCEPTION
WHEN no_data_found THEN
UTL_File.Fclose(sasha);
WHEN UTL_File.invalid_filehandl
-- invalid_filehandle - not a valid file handle
WHEN UTL_File.read_error THEN ... UTL_File.Fclose(sasha);
-- OS error occurred during read
WHEN UTL_File.invalid_operation
end YOUR_PROC ;
REMARK
Server security for PL/SQL file I/O consists of a restriction on the directories that can be accessed.
Accessible directories must be specified in the
instance parameter initialization file (INIT.ORA).
Specify the accessible directories for the UTL_FILE
functions in the initialization file
using the UTL_FILE_DIR parameter.
For example:
UTL_FILE_DIR = <directory name>
like in
UTL_FILE_DIR = C:\DATA\ORACLE\DATAFILES