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Top Forums Shell Programming and Scripting Different way to connect to database ans execute sql query Post 302417108 by gauravgarg on Wednesday 28th of April 2010 01:33:21 PM
Old 04-28-2010
MySQL Different way to connect to database ans execute sql query

Hi Friends,

I am using AIX version and sqlplus to connect to database while writing a shell script.
I have implemented three ways to connect to database :
1)
Code:
sqlplus -s <USERNAME>/<PASSWORD> <<!
@<SQL FILE TO EXECUTE>
exit
!

2)
Code:
sqlplus -s <USERNAME>/<PASSWORD> <<!

-----sql statemenets like -----


SELECT...

exit
!

3)

Code:
sqlplus -s <USERNAME>/<PASSWORD> @ <filename.sql>

********************************************

Please help me to find out the difference in above three, and how does it makes a difference if the .sql file is lying in any different location than the script location ??

Or in better words , which way is most economic to use in script for most quick execution.

Last edited by Scott; 04-28-2010 at 02:47 PM.. Reason: Code tags, please...
 

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SET_TIME_LIMIT(3)							 1							 SET_TIME_LIMIT(3)

set_time_limit - Limits the maximum execution time

SYNOPSIS
bool set_time_limit (int $seconds) DESCRIPTION
Set the number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 sec- onds or, if it exists, the max_execution_time value defined in the php.ini. When called, set_time_limit(3) restarts the timeout counter from zero. In other words, if the timeout is the default 30 seconds, and 25 seconds into script execution a call such as set_time_limit(20) is made, the script will run for a total of 45 seconds before timing out. PARAMETERS
o $seconds - The maximum execution time, in seconds. If set to zero, no time limit is imposed. RETURN VALUES
Returns TRUE on success, or FALSE on failure. NOTES
Warning This function has no effect when PHP is running in safe mode. There is no workaround other than turning off safe mode or changing the time limit in the php.ini. Note The set_time_limit(3) function and the configuration directive max_execution_time only affect the execution time of the script itself. Any time spent on activity that happens outside the execution of the script such as system calls using system(3), stream operations, database queries, etc. is not included when determining the maximum time that the script has been running. This is not true on Windows where the measured time is real. SEE ALSO
max_execution_time, max_input_time. PHP Documentation Group SET_TIME_LIMIT(3)
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