Jvm

[rsrinivasan]

Hi All,

I have JVM OutOfMemory Error in my java program. What is this?
How can i resolve it?

Thanks,

[r035198x]

Hi All,

I have JVM OutOfMemory Error in my java program. What is this?
How can i resolve it?

Thanks,

It is exactly what it says. You are simply running out of memory.
The reasons could be an infinite loop somewhere in your code causing memory to be used up or simply that your program does extensive memory demanding operations.
If your code is not too long you can post the code around the area that's being reported for the error.
If your code is fine then you can consider increasing the heap size when running your program.

[JosAH]

Hi All,

I have JVM OutOfMemory Error in my java program. What is this?
How can i resolve it?

Thanks,

It means that your application wants even more memory while it already had used
all the available memory. You have a 'memory leak' somewhere in your application.

Without seeing your appliation we can't say anything more specific.

kind regards,

Jos

[JosAH]

I didn't have my espresso yet, so this one doesn't count ;-)

kind regards,

Jos

[r035198x]

I didn't have my espresso yet, so this one doesn't count ;-)

kind regards,

Jos

... and I'm just having my Rooibos tea so it can get worse.

[rsrinivasan]

It is exactly what it says. You are simply running out of memory.
The reasons could be an infinite loop somewhere in your code causing memory to be used up or simply that your program does extensive memory demanding operations.
If your code is not too long you can post the code around the area that's being reported for the error.
If your code is fine then you can consider increasing the heap size when running your program.

Hi,
Ya, my program runs lakhs of records at a time. I need to increase the memory size. how do i do it?

Thanks,

[r035198x]

Hi,
Ya, my program runs lakhs of records at a time. I need to increase the memory size. how do i do it?

Thanks,

It could still be a logic problem somewhere you know ...

 java -Xmx<HeapSize> -cp  <ClassPath> <YourMainClass>

[rsrinivasan]

It could still be a logic problem somewhere you know ...

 java -Xmx<HeapSize> -cp  <ClassPath> <YourMainClass>

Hi all,

How do i find the heap size of my JVM.

Thanks,

[r035198x]

Hi all,

How do i find the heap size of my JVM.

Thanks,

Have a look at the methods in the Runtime class.

[rsrinivasan]

Have a look at the methods in the Runtime class.

Hi,

class Status 
{
    public static void main(String[] args) 
    {
        Runtime rt = Runtime.getRuntime();
        System.out.println(rt.totalMemory());
        System.out.println(rt.maxMemory());
        System.out.println(rt.freeMemory());
    }
}

I ran the above program and gets the result as

Result:
2031616
66650112
1911544

But my total RAM memory size is 512 MB.
How it is possible?

Thanks,

[r035198x]

Hi,

class Status 
{
    public static void main(String[] args) 
    {
        Runtime rt = Runtime.getRuntime();
        System.out.println(rt.totalMemory());
        System.out.println(rt.maxMemory());
        System.out.println(rt.freeMemory());
    }
}

I ran the above program and gets the result as

Result:
2031616
66650112
1911544

But my total RAM memory size is 512 MB.
How it is possible?

Thanks,

What values did you expect to get? Remember you have other processes running that are competing for this memory and the JVM uses an initial heap size.

[rsrinivasan]

What values did you expect to get? Remember you have other processes running that are competing for this memory and the JVM uses an initial heap size.

Hi,
When i run "startup.exe" from tomcat_home/bin, it did not through "Out Of Memory" Exception. But when i run the tomcat services, i have "Out Of Memory" Exception. How can i solve it?

Thanks,

[nickyeng]

i have the same error ...

several days already and i still can't solve it.

sad

from
Nick