> Hello everyone,

> I'm getting strange exceptions in Finalizer thread.
> First this exception happens:
> Daemon System Thread [Finalizer] (Suspended (exception
> NullPointerException))
>        JdbcOdbcDriver.finalize() line: 96 [local variables unavailable]
>        Thread.run() line: 619
> When I click in the stack on line "JdbcOdbcDriver.finalize() line: 96
> [local variables unavailable]", Eclipse shows following variables:
> this    JdbcOdbcDriver  (id=55)
>        iTimeOut        0
>        outWriter       null
>        tracer  JdbcOdbcTracer  (id=61)
>                outWriter       null

> When I resume, immediately after first exception, second exception
> happens:
> Daemon System Thread [Finalizer] (Suspended (exception Error))
>        Session.finalize() line: 212 [local variables unavailable]
>        Thread.run() line: 619

> Line number 212 in Session.java is this line:
> throw Message.getInternalError("not closed", stackTrace);

> But I can't see the stack trace and no exception appears in my
> DefaultUncaughtExceptionsHandler, so I can't provide more information.
> Does anyone have an idea if this is OK? I would love to provide more
> information, but I don't know how.

> I'm using the latest version of H2(1.0.79) and this happens *ONLY*
> with JRockIt jrrt-3.0.0-1.6.0-windows-ia32.

> Stefan

> The first exception is related to the JDBC-ODBC bridge that comes with
> the JDK. This is unrelated to H2. H2 doesn't use it. Do you use
> database URLs of the form jdbc:odbc:? Probably not. However the driver
> is loaded by default. Maybe it helps if you read the source code of
> this driver.

> The second exception looks like an unclosed database connection to a
> H2 database. Could you check if the the stack trace in the file
> .trace.db?

> Regards,
> Thomas

> On Sat, Oct 4, 2008 at 1:07 AM, kefa <k...@post.sk> wrote:

> > Hello everyone,

> > I'm getting strange exceptions in Finalizer thread.
> > First this exception happens:
> > Daemon System Thread [Finalizer] (Suspended (exception
> > NullPointerException))
> >        JdbcOdbcDriver.finalize() line: 96 [local variables unavailable]
> >        Thread.run() line: 619
> > When I click in the stack on line "JdbcOdbcDriver.finalize() line: 96
> > [local variables unavailable]", Eclipse shows following variables:
> > this    JdbcOdbcDriver  (id=55)
> >        iTimeOut        0
> >        outWriter       null
> >        tracer  JdbcOdbcTracer  (id=61)
> >                outWriter       null

> > When I resume, immediately after first exception, second exception
> > happens:
> > Daemon System Thread [Finalizer] (Suspended (exception Error))
> >        Session.finalize() line: 212 [local variables unavailable]
> >        Thread.run() line: 619

> > Line number 212 in Session.java is this line:
> > throw Message.getInternalError("not closed", stackTrace);

> > But I can't see the stack trace and no exception appears in my
> > DefaultUncaughtExceptionsHandler, so I can't provide more information.
> > Does anyone have an idea if this is OK? I would love to provide more
> > information, but I don't know how.

> > I'm using the latest version of H2(1.0.79) and this happens *ONLY*
> > with JRockIt jrrt-3.0.0-1.6.0-windows-ia32.

> > Stefan

> Hi Thomas,
> I have only this in the stack trace file:

> 10-04 23:04:20 jdbc[3]: SQLException
> org.h2.jdbc.JdbcSQLException: Database is already closed (to disable
> automatic closing at VM shutdown, add ";DB_CLOSE_ON_EXIT=FALSE" to the
> db URL) [90121-79]
>        at org.h2.message.Message.getSQLException(Message.java:103)
>        at org.h2.message.Message.getSQLException(Message.java:114)
>        at org.h2.message.Message.getSQLException(Message.java:77)
>        at org.h2.message.Message.getSQLException(Message.java:149)
>        at org.h2.jdbc.JdbcConnection.checkClosed(JdbcConnection.java:1283)
>        at org.h2.jdbc.JdbcConnection.getAutoCommit(JdbcConnection.java:402)
>        at
> com.ibatis.common.jdbc.SimpleDataSource.forceCloseAll(SimpleDataSource.java :
> 504)
>        at
> com.ibatis.common.jdbc.SimpleDataSource.finalize(SimpleDataSource.java:
> 738)
>        at java.lang.Thread.run(Thread.java:619)
> 10-04 23:04:20 jdbc[3]: Connection not closed
> java.lang.Exception: Stack Trace
>        at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:142)
>        at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:88)
>        at org.h2.Driver.connect(Driver.java:57)
>        at java.sql.DriverManager.getConnection(DriverManager.java:582)
>        at java.sql.DriverManager.getConnection(DriverManager.java:185)
>        at
> com.ibatis.common.jdbc.SimpleDataSource.popConnection(SimpleDataSource.java :
> 580)
>        at
> com.ibatis.common.jdbc.SimpleDataSource.getConnection(SimpleDataSource.java :
> 222)
>        at
> com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.init(JdbcTransact ion.java:
> 48)
>        at
> com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.getConnection(Jdb cTransaction.java:
> 89)
>        at
> com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeQueryForO bject(MappedStatement.java:
> 120)
>        at
> com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlMapE xecutorDelegate.java:
> 518)
>        at
> com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlMapE xecutorDelegate.java:
> 493)
>        at
> com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(SqlMapSessio nImpl.java:
> 106)
>        at
> com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForObject(SqlMapClientI mpl.java:
> 82)
>        at sk.trader.core.Backtester.test(Backtester.java:215)
>        at sk.trader.core.Backtester.runTest(Backtester.java:169)
>        at sk.trader.core.Backtester.start(Backtester.java:84)
>        at org.netbeans.api.wizard.displayer.WizardDisplayerImpl
> $4.run(WizardDisplayerImpl.java:495)
>        at java.lang.Thread.run(Thread.java:619)

> The two exceptions described in my 1st post are not there.

> On Oct 4, 8:59 am, "Thomas Mueller" <thomas.tom.muel...@gmail.com>
> wrote:
>> Hi,

>> The first exception is related to the JDBC-ODBC bridge that comes with
>> the JDK. This is unrelated to H2. H2 doesn't use it. Do you use
>> database URLs of the form jdbc:odbc:? Probably not. However the driver
>> is loaded by default. Maybe it helps if you read the source code of
>> this driver.

>> The second exception looks like an unclosed database connection to a
>> H2 database. Could you check if the the stack trace in the file
>> .trace.db?

>> Regards,
>> Thomas

>> On Sat, Oct 4, 2008 at 1:07 AM, kefa <k...@post.sk> wrote:

>> > Hello everyone,

>> > I'm getting strange exceptions in Finalizer thread.
>> > First this exception happens:
>> > Daemon System Thread [Finalizer] (Suspended (exception
>> > NullPointerException))
>> >        JdbcOdbcDriver.finalize() line: 96 [local variables unavailable]
>> >        Thread.run() line: 619
>> > When I click in the stack on line "JdbcOdbcDriver.finalize() line: 96
>> > [local variables unavailable]", Eclipse shows following variables:
>> > this    JdbcOdbcDriver  (id=55)
>> >        iTimeOut        0
>> >        outWriter       null
>> >        tracer  JdbcOdbcTracer  (id=61)
>> >                outWriter       null

>> > When I resume, immediately after first exception, second exception
>> > happens:
>> > Daemon System Thread [Finalizer] (Suspended (exception Error))
>> >        Session.finalize() line: 212 [local variables unavailable]
>> >        Thread.run() line: 619

>> > Line number 212 in Session.java is this line:
>> > throw Message.getInternalError("not closed", stackTrace);

>> > But I can't see the stack trace and no exception appears in my
>> > DefaultUncaughtExceptionsHandler, so I can't provide more information.
>> > Does anyone have an idea if this is OK? I would love to provide more
>> > information, but I don't know how.

>> > I'm using the latest version of H2(1.0.79) and this happens *ONLY*
>> > with JRockIt jrrt-3.0.0-1.6.0-windows-ia32.

>> > Stefan