Problem Crontab vs Java 1 4 2 & Socket
I've created a shell script that calls the java program :
PATH=/usr/lib/java:/usr/lib/java/bin:/usr/java142:/usr/java142/bin:$PATH ; export PATH
cd /usr/dconn
java -cp DConnection.jar DPackage/DConnection
The jar en script file are in the same directory.
In the java program a socket connection is made and communication is started with the remote system.
When executing this script at the prompt, there is no problem. I can send data and receive.
The following step is to schedule this script :
SHELL=/bin/sh
MAILTO=root
# check scripts every minute
*/10 * * * * /usr/dexxconn/startdexx.sh
At first there was java 131 installed on the linux system. And there was no problem with the program. When I began using java 140 (on windows) because I needed some new String methods, the scheduler mycron didn't properly executed my program.
The output of the program is normally seen in the mail of the root. But nothing gets in the mail. So I killed the process for that java program and I got output in the mail from the root.
I can derrive from that mail that the java program makes a socket connection, but does not communicate with the remote system. I can't send data or receive.
Has anyone any idea to solve this problem, is it because of crontab,java 140, java 142?
Forgot to mention. When I had these problems with java 131 on linux I installed java 142 and then I got the earlier described problem.
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