Weblogic MBeanMaker and Sun JDK 1.4.2

Question

I just upgraded the JVM in my development environment to 1.4.2_04 and
the Weblogic MBeanMaker no longer works.
Has anyone seen this?
The configuration is as follows:
WLS 8.1 SP2
JDK 1.4.2_04
Windows 2000
The build script is Ant driven and I verified that if I return to
1.4.1_06 it works fine and the MBean jar file is created.
Here is the relevant xml file from the Ant script and the error that I get:
<target name="build.mjf" depends="init">
<echo message="Generating MJF file: ${mjf}"/>
<java classname="weblogic.management.commo.WebLogicMBeanMaker"
fork="true" failonerror="true">
<jvmarg line="-Dfiles=${mfiles} -DMJF=${mjf} -DcreateStubs=true"/>
<classpath>
<pathelement path="${classpath}"/>
<pathelement location="${build_dir}"/>
<pathelement location="${WEBLOGIC}"/>
</classpath>
<arg value="-g"/>
<arg value="-verbose"/>
</java>
</target>
build.mjf:
[echo] Generating MJF file: X:/release/CustomWeblogicProviders.jar
[java] Compiling the files...
[java] About to compile with arguments:
[java] -g -d X:/release/lib/build_mb
[java] javac: no source files
[java] Usage: javac <options> <source files>
[java] where possible options include:
[java] -g Generate all debugging info
[java] -g:none Generate no debugging info
[java] -g:{lines,vars,source} Generate only some debugging info
[java] -nowarn Generate no warnings
[java] -verbose Output messages about what the
compiler is doing
[java] -deprecation Output source locations where
deprecated APIs are used
[java] -classpath <path> Specify where to find user class
files
[java] -sourcepath <path> Specify where to find input
source files
[java] -bootclasspath <path> Override location of bootstrap
class files
[java] -extdirs <dirs> Override location of installed
extensions
[java] -d <directory> Specify where to place generated
class files
[java] -encoding <encoding> Specify character encoding used
by source files
[java] Compiling these files (debug)Exec failed .. exiting
[java] -source <release> Provide source compatibility
with specified release
[java] -target <release> Generate class files for
specific VM version
[java] -help Print a synopsis of standard options
--dejan

Answer 1

I think, this is a bug between the jvm from Sun and the Ant Task because I have
tried without the Server, and I have not this problem.
I have tried with a lot of values, for exemple :
-Xms32m -Xmx200m
-Xms64m -Xmx200m
-Xms128m -Xmx200m
-Xms128m -Xmx128m
-Xms256m -Xmx256m
-Xms512m -Xmx512m
If the virtual machine need up than 512, there is a problem somewhere !!!
And I have not this problem with the previous version 1.4.1_05.
I have also tried with just the max value, -Xmx200m, I have no problem. And with
just the min value, I have the following message Too small initial heap, else
with 512.
This is impossible to have not enough memory with 512 MB.
How has you resolved your problem ???
Thanks for your help.
"Deyan D. Bektchiev" <[email protected]> wrote:
Sebastian,
Your problem might be much simpler than you think. Just set your minimum
heap size to be equal to the maximum and then try it again.
It could be that the minimum heap size allowed values was changed.
Regards,
Dejan
Seb wrote:
Hi Deyan,
We have almost the same problem with an ant task to start a WeblogicServer.
Our Ant Task starts any problem with the java version 1.4.1_05 but wehave the
same error message "Invalid initial heap size: -Xms32m -Xmx200m Couldnot create
the Java virtual machine." when we uses the java version 1.4.2.
Thanks help us to find a solution.
"Deyan D. Bektchiev" <[email protected]> wrote:
I just upgraded the JVM in my development environment to 1.4.2_04 and
the Weblogic MBeanMaker no longer works.
Has anyone seen this?
The configuration is as follows:
WLS 8.1 SP2
JDK 1.4.2_04
Windows 2000
The build script is Ant driven and I verified that if I return to
1.4.1_06 it works fine and the MBean jar file is created.
Here is the relevant xml file from the Ant script and the error that
I get:
<target name="build.mjf" depends="init">
<echo message="Generating MJF file: ${mjf}"/>
<java classname="weblogic.management.commo.WebLogicMBeanMaker"
fork="true" failonerror="true">
<jvmarg line="-Dfiles=${mfiles} -DMJF=${mjf} -DcreateStubs=true"/>
<classpath>
<pathelement path="${classpath}"/>
<pathelement location="${build_dir}"/>
<pathelement location="${WEBLOGIC}"/>
</classpath>
<arg value="-g"/>
<arg value="-verbose"/>
</java>
</target>
build.mjf:
[echo] Generating MJF file: X:/release/CustomWeblogicProviders.jar
[java] Compiling the files...
[java] About to compile with arguments:
[java] -g -d X:/release/lib/build_mb
[java] javac: no source files
[java] Usage: javac <options> <source files>
[java] where possible options include:
[java] -g Generate all debugging info
[java] -g:none Generate no debugging info
[java] -g:{lines,vars,source} Generate only some debugging
info
[java] -nowarn Generate no warnings
[java] -verbose Output messages about what the
compiler is doing
[java] -deprecation Output source locations where
deprecated APIs are used
[java] -classpath <path> Specify where to find user class
files
[java] -sourcepath <path> Specify where to find input
source files
[java] -bootclasspath <path> Override location of bootstrap
class files
[java] -extdirs <dirs> Override location of installed
extensions
[java] -d <directory> Specify where to place generated
class files
[java] -encoding <encoding> Specify character encoding used
by source files
[java] Compiling these files (debug)Exec failed .. exiting
[java] -source <release> Provide source compatibility
with specified release
[java] -target <release> Generate class files for
specific VM version
[java] -help Print a synopsis of standard
options
--dejan