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Full Discussion: Problem in connecting to db in a loop
Top Forums Shell Programming and Scripting Problem in connecting to db in a loop Post 302970576 by anijan on Friday 8th of April 2016 08:29:52 AM
Old 04-08-2016
Problem in connecting to db in a loop
Im trying to run a query in multiple db thro sqlplus in a loop written n shell script. whenevr there is a problem in connecting to db, the shell script abruptly exits. My requirement is , when db connection fails, the script should print the msg and contnue to connect to the next db mentioned in the file county_list Below is my code. Pls assist in getting it fixed.

Code:
cat county_list | while read details
do
county_code=`echo $details | cut -d '|' -f1`
county_name=`echo $details | cut -d '|' -f2`
usr_nm=`echo $details | cut -d '|' -f3`
passwd=`echo $details | cut -d '|' -f4`
domain=`echo $details | cut -d '|' -f5`

echo "Connecting to ${domain}"

$ORACLE_HOME/bin/sqlplus ${usr_nm}/${passwd}@${domain} @sqlquery.sql >> ${conn_dir}/${county_name}_conn.txt

if [ "$?" = "1" ]
then
echo "Connection problem"
continue
fi

echo "LOOP over for ${county_name}"
done

sqlquery.sql :

Code:
SET ECHO OFF
SET VERIFY OFF
SET FEEDBACK OFF
SET MARKUP HTML OFF SPOOL OFF
SET PAGESIZE 50000
SET LINESIZE 5000
SET HEADING ON
SET TRIMSPOOL ON
SET TRIMOUT ON
COLUMN clogname NEW_VALUE logname NOPRINT
SET COLSEP ,
SET SERVEROUTPUT ON
SPOOL /tmp/uat_temp.txt

DECLARE
   v1_sql_err_code   CHAR (10) := NULL;
   v1_success        BOOLEAN := TRUE;
 v1_count NUMBER(7,2);
BEGIN
   DBMS_OUTPUT.enable (NULL);
   v1_success := TRUE;

   SELECT COUNT(*) INTO v1_count
     FROM se_usr a
    
DBMS_OUTPUT.put_line (v1_count);
EXCEPTION
   WHEN OTHERS
   THEN
      v1_success := FALSE;
      v1_sql_err_code := SUBSTR (SQLERRM, 1, 10);
      DBMS_OUTPUT.put_line (
         'EXCEPTION CAUGHT. SQL Error Code: ' || v1_sql_err_code);
END;
/
SPOOL OFF

OUTPUT ( for incorrect login detail in the first db connection. )

Code:
/home/dev/uat_report>./UAT_usr_login_report.sh
Connecting to ALA01r
Connection problem
/home/dev/uat_report>

 

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LEARN ABOUT MOJAVE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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