So I'm doing a minecraft mod in java in eclipse and any time I wanted to start it in eclipse for testing it doesn't work and I get the following output:
Error occurred during initialization of VM
Could not reserve enough space for 1048576KB object heap
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
What can I do? Obviously this problem is not about the RAM not being there, I've got 6GB, it's about java not being allowed to take it.
Related
I'm attempting to run a Desktop installer using Microsoft's SCCM. The installer was written using NSIS which predominantly executes Java calls. This works great unless it's run as the SYSTEM profile using SCCM. All Java calls look like this:
java -jar -Xms512m -Djna.nosys=true myapp.jar [options] ...
✅ When this application is run as a standard user, it works just fine.
⛔️ When this application is run as SYSTEM, it does not work.
Debugging this application we've found the following error is thrown:
Error occurred during initialization of VM
Unable to allocate 60928KB bitmaps for parallel garbage collection for the requested 1949696KB heap.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
I've tried using the recommendations from this Harvard article, but then I get a new error.
java -jar -Xms512m -Djna.nosys=true -XX:+UseSerialGC -XX:ActiveProcessorCount=1 myapp.jar
# ^--- NEW ^--- NEW
The new error:
Java HotSpot(TM) 64-Bit Server VM warning: CodeCache is full. Compiler has been disabled.
Java HotSpException in thread "main" ot(TM) 64-Bit Server VM warning: Try increasing the code cache size using -XX:ReservedCodeCacheSize=
CodeCache: size=245760Kb used=3192Kb max_used=3192Kb free=242567Kb
bounds [0x00000295494c0000, 0x00000295497e0000, 0x00000295584c0000]
total_blobs=1238 nmethods=897 adapters=254
compilation: disabled (not enough contiguous free space left)
java.lang.OutOfMemoryError: Metaspace
Why won't Java run properly as SYSTEM using SCCM?
As a (non comprehensive) stop-gap solution, removing -Xms512m fixes the issue with SCCM. Fortunately the installer doesn't require as much memory as requested.
I am working on Linux for Mitrh and when I shutdown Apache server it gives following error:
And when I check for filesystem-
I dont know how to use /dev/sdb1/ that is 99% available
This might be a little late. But, changing the tmp file location to a place with more space for JVM could solve your problem:
export JAVACMD_OPTIONS="-Djava.io.tmpdir=/path/to/temp/directory/with/more/space";
Hope this helps
we are trying to start our application server(Weblogic) but the below error comes up and we are unable to start it.
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512M; sup
port was removed in 8.0
Error occurred during initialization of VM
Could not reserve enough space for object heap
Can you please advise. Thanks in advance.
These are 2 different errors resulting from their individual configurations.
For this warning:
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
MaxPermSize=512M; sup port was removed in 8.0
The MaxPermSize configuration was a Hotspot specific setting to specify the maximum perm-gen space for storing class files. You should either check your Server -> Server start -> Arguments if there is a -XX:MaxPermSize included that can be removed or you could check your startup scripts if specified there.
See this for details.
For this error:
Could not reserve enough space for object heap
This results from heap allocation not enough. You need to add a -Xmx512m or an appropriate higher value.
I have been trying to find the answer to this but I still could not.
I have a 64-bit machine with 256 GB RAM.
I am trying to execute a Java program which links to MySQL. And it needs a quiet big heap size because when I used VM argument -Xmx1024m after few minutes this pops up:
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
But, when I tried to set the program VM argument by -Xmx2048m or bigger, it does not work and said:
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
I read that setting -Xmx2048 is not a problem for 64-bit machine but I really do not know why it's not working on my machine.
java -version output:
wmic OS get FreePhysicalMemory /Value output:
FreePhysicalMemory=251663664
wmic computersystem get TotalPhysicalMemory output:
TotalPhysicalMemory
274811621376
wmic os get osarchitecture output
OSArchitecture
64-bit
I could not execute systeminfo|find "Memory" as it says wrong syntax. Im not sure why either.
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
This message implies the java heap does not have enough space to do further allocation.
It seems you have set to 1G of Xmx which is insufficient for your application
else the application might leak memory which occupies space in java heap.
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
During VM initialization. JVM does various init right from Heap to JIT modules.
Java heap are continiuos space while doing doing initialization if JVM could not find the
contigous memory space for the requested Xmx then above error message will be thrown.
These are virtual memory allocation so please do not confuse with physical memory values
Please run the command
java -verbose:init -Xmx2048 -version
this command will tell the steps undergoes by JVM while doing initialization and during what step it got failed.
Consider running your app as an administrator - just launch the PowerShell console via right click -> Run as Administrator.
Windows may deny granting a lot of memory to a single process that is running non-elevated.
Also - are you using Windows Server or a workstation version of Windows? It is generally recommended to use Windows Server for such "big" services.
Sometimes Intellij IDEA crashes for no obvious reason.
First, it becomes quite slow, CTRL + N (class search) often takes a bit longer than usual time to respond when you type something into it, jumping between files takes more time. And then it crashes..
What is the usual route to diagnose Intellij crash? I've been monitoring memory on the status bar when it crashed and it had about 100MB (out of 512MB) left at that time. Are there any useful logs that would point in the direction of the problem?
[UPDATE] 3 crashes in total.
1 instance:
A fatal error has been detected by the Java Runtime Environment:
EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d93acab, pid=3120, tid=5588
JRE version: 6.0_24-b07
Java VM: Java HotSpot(TM) Client VM (19.1-b02 mixed mode windows-x86 )
Problematic frame:
V [jvm.dll+0x9acab]
2 instances:
A fatal error has been detected by the Java Runtime Environment:
java.lang.OutOfMemoryError: requested 32756 bytes for ChunkPool::allocate. Out of swap space?
Internal Error (allocation.cpp:166), pid=2484, tid=5568
Error: ChunkPool::allocate
Memory configuration:
-Xss2m
-Xms32m
-Xmx512m
Increased the memory to -Xmx768, hopefully that will delay the out of memory error by a bit. Increasing the memory to -Xmx1024 caused weird address mapping problems after running IDEA for a while (integer overflow?). The machine has 3GB of RAM.
Intellij wouldnt start up i.e. flashes IntelliJ and crashes.
Fix: Set -Xmx to default 512MB in idea.exe.vmoptions file located in folder C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 14.1.4\bin
How I landed on this issue: I was having Xmx set to 2048MB earlier and it crashed hitting GC limit. Then on IntelliJ wouldn't start.
Please define "crashes". If the window just disappears, it usually means the JVM bug and there will be hs_err_pidXXX.log files in the IDEA working directory (usually IDEA_HOME/bin). In some cases updating JDK to the new version or changing Garbage Collector strategy (via vmoptions file) can workaround such issues.
If the IDE stops responding completely, you need to provide thread dumps.
If it behaves weird, then you need to check idea.log for exceptions. In some cases it can be caused by OutOfMemory issues. Increasing heap size in idea.vmoptions should help. Check the FAQ for IDEA files locations.
If IDEA is becoming very slow on certain operations, you need to provide CPU snapshot.
In addition to the above answer, I added:
-Dswing.noxp=true to .vmoptions file located at IDE_HOME\bin\[bits][.exe].vmoptions
This fixed the problem for me.