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Top Forums UNIX for Advanced & Expert Users Connecting once using sqlplus and doing multiple queries Post 302445279 by edlin_r on Sunday 15th of August 2010 03:55:58 AM
Old 08-15-2010
Data Connecting once using sqlplus and doing multiple queries

Hello everyone,

It's my first week using unix and shell scripting. I tried creating a script that has a function that execute SQL query. my script looks something like this:

----------------------------------------------------

Code:
#!/bin/sh
 
tableName="myTable"
secondTable="secondTable"
 
myFunction()
{
myQuery=`sqlplus -s usr/pass << EOF
set heading off
SELECT COUNT(*) FROM $tableName WHERE <condition>;
EOF`
if [ $myQuery = '0' ]; then
myQuery=`sqlplus -s usr/pass << EOF
set heading off
SELECT COUNT(*) FROM $secondTable WHERE <condition>;
EOF`
fi
return $myQuery
}
 
myFunction
output=`echo $?`

----------------------------------------------------

Correct me if I'm wrong, but I believe that if I always use the "sqlplus -s usr/pass" statement everytime I need a record query, It would slow down my processing.. I have to call this function about 5000 times (need to query 5000 times to check record).

how can I execute multiple queries (select) without being redundant on the ''sqlplus -s....'' statement?

Please help me. Thank you.

Last edited by pludi; 08-15-2010 at 08:54 AM.. Reason: code tags, please...
 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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