Re: [Wrapper-user] Jar works with console, throws exceptions when launched via start?

[Stas O. <sta...@gm...>]

Hi.

Well, I sorted it out - it was an Enter key handler which somehow interfered
and caused a chain reaction.

I noticed a very serious issue in the wrapper - sometimes it exits/crashes
together with the Java app, and hence can't restart it.

Any idea what's going on, and how the wrapper can be reliably used?

Regards.

2008/9/16 Leif Mortenson <le...@ta...>

> Stas,
> What platform and version are you running on?  I see a reference to a
> UNIXProcess so I assume it is not Windows.
>
> On UNIX versions, there is really no difference in the way the Wrapper
> launches the JVM between running in Console or Started as a daemon
> process.  There could be differences in the environment variables
> available to the Wrapper when it launches however.  For example, the
> PATH, or LD_LIBRARY_PATH.   There could also be file permission issues
> if they are not being run as the same user.
>
> Either way however, the Wrapper and JVM appear to be working.   Most
> likely something in the application is failing for one of the above
> reasons which is leading to it being in an unstable state, thus
> causing the exceptions.
>
> As these appear to be JDBC driver related, I would guess that maybe a
> native component of your driver is failing to load.  Does MySQL have a
> native driver?  I have used the pure Java driver.   I tried Googling
> and found your question but not much else.
>
> I would be happy to help out with more information.
>
> Cheers,
> Leif
>
> On Sat, Sep 13, 2008 at 7:11 PM, Stas Oskin <sta...@gm...> wrote:
> > Hi.
> >
> > I'm trying to get my app packaged in jar to work with the Java Wrapper,
> and
> > have set up all correctly.When I launch the service in console mode, all
> > works correctly.
> >
> > When I do the same with service mode - the service shuts down after a few
> > seconds, and has the following errors in the log:
> >
> > INFO   | jvm 1    | 2008/09/13 00:05:01 | java.sql.SQLException:
> > java.lang.ThreadDeath
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > com.mysql.jdbc.Util.handleNewInstance(Util.java:430)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> >
> com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > java.sql.DriverManager.getConnection(DriverManager.java:582)
> > INFO   | jvm 1    | 2008/09/13 00:05:01 |       at
> > java.sql.DriverManager.getConnection(DriverManager.java:185)
> >
> > (Below it my own functions exceptions - but this is a standard JDBC
> > connector for MySQL).
> >
> > And this comes next (where I have function launching external process via
> > exec function):
> >
> > INFO   | jvm 1    | 2008/09/13 00:05:03 | java.lang.InterruptedException
> > INFO   | jvm 1    | 2008/09/13 00:05:03 |       at
> > java.lang.Object.wait(Native Method)
> > INFO   | jvm 1    | 2008/09/13 00:05:03 |       at
> > java.lang.Object.wait(Object.java:485)
> > INFO   | jvm 1    | 2008/09/13 00:05:03 |       at
> > java.lang.UNIXProcess.waitFor(UNIXProcess.java:165)
> >
> >
> > Any idea what different between the console and start modes, and why the
> > basic functionality doesn't work in this mode?
> >
> > Regards.
> >
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