why script fails sometime? Post: 302227325

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Top Forums UNIX for Advanced & Expert Users why script fails sometime? Post 302227325 by bakunin on Thursday 21st of August 2008 04:05:28 AM

08-21-2008

Registered User

The scripts mentioned here are the default start scripts for IBMs Websphere product. They themselves run a whole lot of commands and any of these commands can fail for some or the other reason.

In other words: nothing of the information you gave us so far is sufficient to find out the reason. our script calls four other scripts and this process probably never fails and never will fail. That does not mean, though, that all the scripts started this way will finish sucessfully - each of them could fail for some or other reason. I have worked with a server running Websphere once and i know that it can be tricky sometimes to find ot why it failed to start.

I fear it will boil down to thorough troubleshooting on your side to find out the reason. The following are just some (very general) suggestions which may or ma not help you find the problem.

- You run your script under bash instead of ksh. bash is not the systems default shell and hence using it a potential risk. While i suppose it won't make any difference it is on the safer side to use "/bin/ksh" instead of bash.

- Try inserting "set -x" at the start of the four mentioned scripts and capture the output to some file to see what is going on:

Code:

#!/bin/ksh
/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/startManager.sh  >/tmp/start.1.log 2>&1
/opt/IBM/WebSphere/AppServer/profiles/AppSrv01/bin/startNode.sh  >/tmp/start.2.log 2>&1
/opt/IBM/WebSphere/AppServer/profiles/AppSrv01/bin/startServer.sh server1 >/tmp/start.3.log 2>&1
/opt/IBM/HTTPServer/bin/apachectl start >/tmp/start.4.log 2>&1

If something fails you can analyze the files /tmp/start[1-4].log then. This will not fix any problem itself, just help you analyze the situation when it happens.

I hope this helps.

bakunin

bakunin

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LEARN ABOUT PHP

set_time_limit

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)