I installed jQAssistant, set the JQASSISTANT_OPTS variable to -Xmx1024M -XX:MaxPermSize=512m as recommended and then get (when starting jqassistant.cmd):
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
I guess that jQAssistant is running on the wrong version of Java. Does anyone no how to determine or change the Java version? Or is there any other reason behind this?
Just run
> set PATH
on the command line prompt. You'll see output like the following containing the path to the Java installation that is used when running jqassistant.cmd:
`Path=C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Git\cmd;C:\Program Files (x86)\GNU\GnuPG\pub;C:\Program Files (x86)\PuTTY;C:\Development\apache-maven-3.3.9\bin;C:\Program Files\Java\jdk1.8.0_77\bin;C:\Program Files (x86)\Skype\Phone\;C:\Program Files\TortoiseGit\bin;C:\Development\jruby-9.0.4.0\bin`
(the relevant part in this case is "C:\Program Files\Java\jdk1.8.0_77\bin").
You can verify this by running:
> java -version
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
Usually the given parameters should work on all Oracle JVMs even if 1.8 releases will issue a warning about the no longer supported MaxPermSize parameter.
Can you provide an information what is running on your machine?
Related
I've always used Google2SRT, a light software to download subtitles from Youtube. Now it no longer works: "Startup Error: Failed to find Java VM".
I have Java installed, I have Netbeans installed and working, I have never had any Java related issues.
I've tried reinstalling everything, I've tried creating a JAVA_HOME and JRE_HOME System variable and pointing it to "C:\Program Files\Java\jre1.8.0_191" according to this tutorial: https://confluence.atlassian.com/doc/setting-the-java_home-variable-in-windows-8895.html
It felt odd because I didn't even had this environment variable previously. I have no idea what's the issue.
I've tried uninstalling Netbeans and other programming tools as well.
I'm on Windows 7 x64.
java -debug -version > "%userprofile%\desktop\javaDebug.log" 2>&1 returns:
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
I have also tried setting maximum heap size in _JAVA_OPTIONS
System Variables
Just go to the install dir (e.g. C:\Program Files (x86)\Google2SRT), open a cmd.exe, cd to the above folder and type java -jar Google2SRT.jar. You don't need the .exe
This should work, provided you have java installed. Check by typing java -version in the cmd.
java version 1.7.0_79
Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
args i use
-XX:+UnlockCommercialFeatures
-XX:+FlightRecorder
-XX:+FlightRecordingDumpOnUnhandledException -XX:StartFlightRecording=duration=6m,filename=member.jfr"
-XX:FlightRecorderOptions=loglevel=debug,delay=2m,maxsize=2g"
error
Unrecognized VM option 'FlightRecordingDumpOnUnhandledException'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
what is the correct option to use ? to dump the recording on exception
-XX:+FlightRecordingDumpOnUnhandledException only works for JRockit. No similar option exists for Hotspot (JDK7/8)
Use the template manager that is available in Mission Control.
Go to Windows -> Template Manager and import the template and check
Heap Statistics and Allocation Profiling, export it. Done!
(I copy-pasted this text from similar question, #Kire wrote it as well)
Basically, you can just add exception-level=all to settings. I have no idea why Oracle don't have documentation for this parameters.
Can't seem to find an answer to this.
If I type java -version I get
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
I'm trying to run PMD to analyse an iOS project. When I run the command in Terminal however, I get:
Could not create the Java virtual machine.
Anyone have any idea what is causing this?
This could be due to installation issue. Check whether you have installed correct JRE for your platform(bit pattern etc.). If its fine try changing memory settings.
This link will help you to set memory settings in Java
I need to set
ANT_OPTS=-Xms1024m -Xmx6144m -XX:PermSize=1024m -XX:MaxPermSize=1024m
JAVA_OPTS=-Xms1024m -Xmx6144m -XX:PermSize=1024m -XX:MaxPermSize=1024m
I have a system with 8gb(recently upgraded from 4 gb)
But once i set the ant opts to above said value I am not able to run any of my ant targets and I get the following error
[ERROR] Argument error: -Xmx6144m
[ERROR] Specified maximum heap size (6144 MB) is larger than the address space on this platform (4 GB).
[WARN ] -XX:PermSize=1024m is not a valid VM option. Ignoring
[WARN ] -XX:MaxPermSize=1024m is not a valid VM option. Ignoring
Could not create the Java virtual machine.
This indicates the Java that I have on my system
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Oracle JRockit(R) (build R28.1.0-123-138454-1.6.0_20-20101014-1351-windows-x86_64, compiled mode)
and I am running a Windows 7 on Intel Core 2 Duo 3Ghz processor and 8GB RAM.
PS: I did Google for the error and it was one of my first such occurrences where I did not get any links pointing to the specific solution.
As discussed in the comments:
It would seem that your ANT installation is using a 32-bit JVM. While a 64-bi JVM is in your PATH ANT doesn't obey the JVM in your PATH, it first looks at JAVA_HOME. You can verify this by running $JAVA_HOME/bin/java -version.
You can update your environment to set JAVA_HOME to the 64-bit version or change the ANT script to always use a specific version of Java.
The error message appears to be suggesting the platform is 32-bit. I imagine you can't actually use 4 GB.
I would try installing the 64-bit version of Java and using that.
For the HotSpot JVM I would expect to see
$ java -mx30g -version
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b05)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)
I'm using Jboss and I added -XX:+HeapDumpOnCtrlBreak option to JAVA_OPTS.
But I got the error when starting Jboss:
Unrecognized VM option '+HeapDumpOnCtrlBreak'
Could not create the Java virtual machine.
I've searched on the net and it seems JDK 6 doesn't support this option so I changed to jdk1.5.0_09 but still got this error.
Does anyone know what's wrong?
the option doesn't work even on JDK 1.7 update 25:
>>java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b16)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
>>java -XX:+HeapDumpOnCtrlBreak
Unrecognized VM option 'HeapDumpOnCtrlBreak'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Alright, seems that I need Java SE release 5.0 update 14 or above.
Changes in 1.4.2_21
http://www.oracle.com/technetwork/java/javase/documentation/overview-142120.html
6321286 java serviceability Add -dump option to jmap so that a cooperative heap dump can be obtained from a running VM.
6454676 java serviceability Need -XX:+HeapDumpOnCtrlBreak to trigger heap dump on ctrl-break or ctrl-\
6608975 java serviceability HeapDumpPath option is ignored for dumps written by HeapDumpOnCtrlBreak functionality
Upgrade to Jdk 1.4.2_21+ can help us support this heap dump generation functionality
-XX:+HeapDumpOnCtrlBreak in HotSpot JVM (by Sun/Oracle) is present in 1.4.2_12 or higher and 1.5.0_14 or higher. For JVMs 1.6, 1.7, 1.8 this option is no more present, but you can use the "jmap" tool (jmap.exe -dump:format=b,file=HeapDump.hprof)
In HP-UX JVM the option is present in versions 1.4.2_11 or higher, and 1.5.0_05 and higher. And in all later versions (1.6, 1.7).
For more infos see A searchable collection of JVM options - HeapDumpOnCtrlBreak