Re: Informix JDBC2.00_JC1 + Sun's HotSpot VM

And finally from Sun: The versioning confusion in JVM is being fixed in the next Java 2 release, 1.2.2, scheduled for release in summer. This isn't a hotspot issue, though, but a generic JDK issue. The confusion arises over the release version (1.2.2, say) and the specification version (1.2). In article <7hbg5h$m7s$1@nnrp1.deja.com>, Paul Denny <paul.denny@pa.press.net> wrote: > Thanks for this Vladimir, it is a useful workaround, > > Further response from Informix: > > I've received word back from the US. They've agreed that we're not > dependent on the VM version, only the Java version, so the current > checking is a bug. > > We'll change the code to check 'java.version' and not 'java.vm.version' > - I've already tested this and Hotspot returns '1.2.1' for > 'java.version', so it should work. > > I've ordered a patch for you (the fix will also see its way into the > next release) but, according to official lines, patches may take up to > 45 days but I seriously doubt if it'll be more than a week before you > have your patch. > > In article <7hb9an$2ui1@www.na.informix.com>, > "Vladimir Laptukhov" <lvm@isb.gomel.by> wrote: > > Hi! > > > > Paul Denny wrote in his message about cause of the fault. I simply > want to > > add some words how resolve this problem. All what you need is > > java -Djava.vm.version=1.2.1 ... > > > > Paul Denny wrote in his message<7h9da9$1el$1@nnrp1.deja.com> ... > > >Here is informix's response: > > > > > >I have had a look through out knowledge base and on the 6th of May > (last > > >Thursday) a bug was raised for this problem. > > > > > >I've subsequently managed to access the JDBC2.0 source and I believe > > >that this bug was raised in error and will be closed by R&D without a > > >fix. My reasoning for this is the following. We check the system > > >property "java.vm.version" for the version number; -classic returns > > >'1.2.1' but -hotspot return '1.0fcs' so clearly the Hotspot VM is at > > >fault here - if it is a 1.2.1 VM, why doesn't it report 1.2.1 ? > > > > > >Below is a small example programme that you can compile and run under > > >the two VMs which will illustrate the fault: > > > > > >class vers > > >{ > > > public static void main(String args[]) > > > { > > > //This next line is how we obtain the VM version. > > > String jdkVersion = System.getProperty("java.vm.version"); > > > System.out.println(jdkVersion); > > > } > > >} > > > > > >(My output was the following:) > > > > > >F:\\java\\tmp>java -classic vers > > >1.2.1 > > > > > >F:\\java\\tmp>java -hotspot vers > > >1.0fcs > > > > > >I have, none the less, submitted a request for a code fix to the US > > >which I expect to get turned down as the fault does not lie in the > > >Informix product. > > > > > >In article <3736A0DE.EEAC599F@Dresdner-Bank.com>, > > > Joerg Schneider <Joerg.Schneider@Dresdner-Bank.com> wrote: > > >> Hello everybody, > > >> > > >> I tried out the latest Informix JDBC driver (Version 2.00 JC1) and > > >found > > >> out that > > >> the demo's work with the Classic Java 1.2.1 VM. > > >> > > >> After installation of the HotSpot-Engine for JDK 1.2.1 the driver > came > > >> up with a message that it needs to be run in a JDK 1.2 environment > and > > >> exits, so no demo > > >> is running anymore. > > >> > > >> Running the demo's with the "java -classic" option set, still > works. > > >> > > >> Running "java -classic" works with the driver and "-version" > returns : > > >> java version "1.2.1" > > >> Classic VM (build JDK-1.2.1-A, native threads) > > >> > > >> Running "java" with an installed HotSpot-Engine doesn't work with > the > > >> driver and "-version" returns : > > >> java version "1.2.1" > > >> HotSpot VM (1.0fcs, mixed mode, build E) > > >> > > >> Any idea's > > >> > > >> > > > > > >-- > > >Paul Denny > > >Group DBA > > >PA News > > >http://www.pa.press.net > > > > > > > > >--== Sent via Deja.com http://www.deja.com/ ==-- > > >---Share what you know. Learn what you don't.--- > > > > > > -- > Paul Denny > Group DBA > PA News > http://www.pa.press.net > > --== Sent via Deja.com http://www.deja.com/ ==-- > ---Share what you know. Learn what you don't.--- > -- Paul Denny Group DBA PA News http://www.pa.press.net --== Sent via Deja.com http://www.deja.com/ ==-- ---Share what you know. Learn what you don't.---