Very Computer

1. Shell script hangs at execution of Java program...

So, my java code appears to run to completion b/c I can see the output
of the last executable line of my Java program in my log file.  It
seems to be a case of the Java program not returning control back to
the shell script.  The last line of code is a
'System.out.println("Ending...")'.  But, 12 hours later, I can still
see the two processes running - the shell script and the child Java
process.  I run this shell script from a cron job usually, but it can
hang when run from an interactive shell as well.

The script seems to run fine 90+% of the time.

The particular java code does a lot of ftp stuff using a 3rd party
library.  I don't know of any open file handles, etc.  No db
connections.  I'm thinking of adding a call to System.exit(0), maybe
even a 'finally' block.  I have other shell scripts running other Java
programs dealing w/ all sorts of stuff - filesystem, db, mail, but
none seem to hang.

Here's my system:

$ uname -a
HP-UX etc-rp11 B.11.11 U 9000/800

Any ideas??

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

## Here's the crontab task
/path/to/myscript.sh >> /path/to/mylog.log 2>&1

-------------------------------------------------
## And here's the shell script
echo "========== $0 starting on `date`... =========="

# Create lockfile
mkdir $lockfile

# Run Java program
java -cp $CLASSPATH MyClass

# Remove lockfile
rmdir $lockfile

echo "========== $0 ending on `date`... =========="

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

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