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Shell Programming and Scripting
ksh script and java problem
Post 75520 by adrian.mihai on Monday 20th of June 2005 05:38:38 AM
06-20-2005
ksh script and java problem
I have a problem with the execution of a ksh as deamon on linux. I explain you first the context.
We have developped a Java program that execute every minutes an external (that we don't have developped) program with a config file in parameter.
The Java program is runned as deamon with a perl ("nohup javaprogram > logfile exit(0)") program.
Java program execute every minute (with command exec) a ksh file "Epa.ksh" that contain "APIEpa.ksh $1 >> logfile". This ksh call the external program and redirect standard output of the external program to a log file.
The ksh APIEpa.ksh execute an omnimark program and make an exit(0) when execution is finished.
Our problem is that for each execution a lot of process are created and then aren't deleted when the execution is finished. Every minute more and more process are created!!!
We can't change APIEpa.ksh. I have created Epades.ksh to redirect standard output of APIEpa.ksh in a file because when a lot of message was printed on the screen the program were stopped. But my solution doesn't work :-(.
We can change Java execution, perl that launch java in deamon and Epades.ksh.
They are launched in this order:
1. startMess_nohup.pl
2. PES_MessagingServer.ksh
3. Epa.ksh
4. APIEpa.ksh
1.startMess_nohup.pl
`nohup
MessagingServer/ae2.xml/Batch/PES_MessagingServer.ksh > MessagingServer/ae2.xml/Batch/PES_MessagingServer.log &`;
exit(0);
2. PES_MessagingServer.ksh
#!/bin/ksh -x
/usr/java/java/jre/bin/java -cp lib/PES_MessagingServer.jar com.xt.pes.messaging.server.ServerManager -conf /ServerEpaMessagingProperties.xml
3. Epa.ksh
APIEpa.ksh $1 >> Messaging.log
4. APIEpa.ksh
#!/usr/bin/ksh
PARENT_DIR="/MessagingServer/ae2.xml"
# configuration des outils
. ${PARENT_DIR}/Cfg/Epa.cfg
${OMNIMARKBIN}/omnimark -s ${PARENT_DIR}/Omnimark/Epa.xom -d Product "${PRODUCT}" -d Data "${DATA}" -d Provider "${PROVIDER}" -d ConfigFile "${ConfigFile}" -d ConfigDtd "${ConfigDtd}" -d TplInputDtd "${TplInputDtd}" -d TplOutputDtd "${TplOutputDtd}" -i ${OMNIMARKINC}/ -i ${PARENT_DIR}/Omnimark/ -i ${PARENT_DIR}/Api/ -x ${PARENT_DIR}/Api/=L.so -x ${OMNIMARKLIB}/=L.so -brief
ReturnCode=$?
if [ ${ReturnCode} -ne 0 ];then
echo "Error with return code: ${ReturnCode}"
else
echo "Epa.ksh OK. Return Code = ${ReturnCode}"
fi
exit 0
Those are all the scripts. Can someone PLEASE help me to solve this issue?!
Thank You,
Adrian Mihai
Network Engineer
We have developped a Java program that execute every minutes an external (that we don't have developped) program with a config file in parameter.
The Java program is runned as deamon with a perl ("nohup javaprogram > logfile exit(0)") program.
Java program execute every minute (with command exec) a ksh file "Epa.ksh" that contain "APIEpa.ksh $1 >> logfile". This ksh call the external program and redirect standard output of the external program to a log file.
The ksh APIEpa.ksh execute an omnimark program and make an exit(0) when execution is finished.
Our problem is that for each execution a lot of process are created and then aren't deleted when the execution is finished. Every minute more and more process are created!!!
We can't change APIEpa.ksh. I have created Epades.ksh to redirect standard output of APIEpa.ksh in a file because when a lot of message was printed on the screen the program were stopped. But my solution doesn't work :-(.
We can change Java execution, perl that launch java in deamon and Epades.ksh.
They are launched in this order:
1. startMess_nohup.pl
2. PES_MessagingServer.ksh
3. Epa.ksh
4. APIEpa.ksh
1.startMess_nohup.pl
`nohup
MessagingServer/ae2.xml/Batch/PES_MessagingServer.ksh > MessagingServer/ae2.xml/Batch/PES_MessagingServer.log &`;
exit(0);
2. PES_MessagingServer.ksh
#!/bin/ksh -x
/usr/java/java/jre/bin/java -cp lib/PES_MessagingServer.jar com.xt.pes.messaging.server.ServerManager -conf /ServerEpaMessagingProperties.xml
3. Epa.ksh
APIEpa.ksh $1 >> Messaging.log
4. APIEpa.ksh
#!/usr/bin/ksh
PARENT_DIR="/MessagingServer/ae2.xml"
# configuration des outils
. ${PARENT_DIR}/Cfg/Epa.cfg
${OMNIMARKBIN}/omnimark -s ${PARENT_DIR}/Omnimark/Epa.xom -d Product "${PRODUCT}" -d Data "${DATA}" -d Provider "${PROVIDER}" -d ConfigFile "${ConfigFile}" -d ConfigDtd "${ConfigDtd}" -d TplInputDtd "${TplInputDtd}" -d TplOutputDtd "${TplOutputDtd}" -i ${OMNIMARKINC}/ -i ${PARENT_DIR}/Omnimark/ -i ${PARENT_DIR}/Api/ -x ${PARENT_DIR}/Api/=L.so -x ${OMNIMARKLIB}/=L.so -brief
ReturnCode=$?
if [ ${ReturnCode} -ne 0 ];then
echo "Error with return code: ${ReturnCode}"
else
echo "Epa.ksh OK. Return Code = ${ReturnCode}"
fi
exit 0
Those are all the scripts. Can someone PLEASE help me to solve this issue?!
Thank You,
Adrian Mihai
Network Engineer
Last edited by adrian.mihai; 06-22-2005 at 06:37 AM..
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suspend
suspend(1) User Commands suspend(1) NAME
suspend - shell built-in function to halt the current shell SYNOPSIS
sh suspend csh suspend ksh suspend DESCRIPTION
sh Stops the execution of the current shell (but not if it is the login shell). csh Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su. ksh Stops the execution of the current shell (but not if it is the login shell). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5) SunOS 5.10 15 Apr 1994 suspend(1)