I've managed to get a memory 'leak' in a java application I'm developing. When running my JUnit test suite I randomly get out of memory exceptions (java.lang.OutOfMemoryError). What tools can I use to examine the heap of my java application to see what's using up all my heap so that I can work out what's keeping references to objects wh...
My memory is 4G physical, but why I got out of memory exception even if I create just 1.5G memory object. Any ideas why? (I saw at the same time, in the performance tab of task manager the memory is not full occupied, and I could also type here -- so memory is not actually low, so I think I hit some other memory limitations)? using Syst...
Hi, I am using expat parser to parse an XML file of around 15 GB . The problem is it throws an "Out of Memory" error and the program aborts . I want to know has any body faced a similar issue with the expat parser or is it a known bug and has been rectified in later versions ? ...
In my project I often encounter Java heap space errors, i.e., there isn't enough space to run the program any more. Is there any way I can increase virtual memory? I am not using the command-line. I am using Net Beans. ...
A very huge ocaml program from an alien source needs to be fixed. One of the problem is that the program crashes at seemingly innocent line: Hashtbl.mem loc_to_no loc with "Out of memory" exception. The thing is that there's surely enough memory out there and this line is executed just fine for other inputs and even earlier during t...
Hi, I'm writing an application in Python with Postgresql 8.3 which runs on several machines on a local network. All machines 1) fetch huge amount of data from the database server ( lets say database gets 100 different queries from a machine with in 2 seconds time) and there are about 10 or 11 machines doing that. 2) After processing ...
Sometimes when I redeploy war too many times, jboss gives java.lang.OutOfMemoryError: PermGen space error, is it possible to monitor jboss with other Java program that is not run inside jboss, to make sure it has not run ot of memory and if it is, then automatically restart jboss? ...
I'm working with a large data frame, and have run up against RAM limits. At this point, I probably need to work with a serialized version on the disk. There are a few packages to support out-of-memory operations, but I'm not sure which one will suit my needs. I'd prefer to keep everything in data frames, so the ff package looks encouragi...
I used the Out Of Memory help from sun's site. Where it is quoted as Out Of Memory : Requested array size exceeds VM limit This indicates that the application attempted to allocate an array that is larger than the heap size. For example, if an application tries to allocate an array of 512MB but the maximum heap size is 256MB, then this...
Hi, When I'm trying to build Apache FOP by ant on the command line, it complains: [javac] The system is out of resources. [javac] Consult the following stack trace for details. [javac] java.lang.OutOfMemoryError: Java heap space [javac] at com.sun.tools.javac.zip.ZipFileIndex.readBytes(ZipFileIndex.java:557) [javac] at com...
Is there a way to make the OOM killer work and prevent Linux from freezing? I've been running Java and C# applications, where any memory allocated is usually used, and (if I'm understanding them right) overcommits are causing the machine to freeze. Right now, as a temporary solution, I added, vm.overcommit_memory = 2 vm.overcommit_ratio...
This image shows fragmentation in my app's address space. Is there any way to force the (third-party) dll images (purple) together to eliminate (or mitigate) the fragmentation? This app will run on 32-bit XP; obviously when we eventually move to 64-bit Windows 7, this problem will go away. Thanks! ...
This is my code here the variable bq is a custom class called BasicQuery it returns a JavaDB connection... AutoCompleteDecorator is the class from swingX library used to implement the autocomplete functions... This code when rus about 3 times run properly but after that it keep getting frozen and after a while throws the out of memory ex...
Hi! I'm using ASANT to run a xml file which points to a NARS.jar file. (i do not have the project file of the NARS.jar) I'm getting "java.lang.OutOfMemoryError: Java heap space. I used VisualVM to look at the heap while running the NARS.jar, and it says that it max uses 50 MB of the heapspace. I've set the initial and max size of heap...
OK, so I am writing a program that unfortunately needs to use a huge data structure to complete its work, but it is failing with a "out of memory error" during its initialization. While I understand entirely what that means and why it is a problem, I am having trouble overcoming it, since my program needs to use this large structure and ...
We have been facing Out of Memory errors in our App server for sometime. We see the used heap size increasing gradually until finally it reaches the available heap in size. This happens every 3 weeks after which a server restart is needed to fix this. Upon analysis of the heap dumps we find the problem to be objects used in JSPs. Can JS...
Hi! The short question is: what can be the problem? The overall memory usage of my program (shown by task manager) is almost the same all the time (near 40 minutes) it's running, and I have near 2G more free memory. Running on win2003r2. Memory allocation/freeing is high enough - I need to interact with other software, preparing dat...
I'm processing 1 million records in my application, which I retrieve from a MySQL database. To do so I'm using Linq to get the records and use .Skip() and .Take() to process 250 records at a time. For each retrieved record I need to create 0 to 4 Items, which I then add to the database. So the average amount of total Items that has to be...
I am trying to deal with a very large dataset. I have k = ~4200 matrices (varying sizes) which must be compared combinatorially, skipping non-unique and self comparisons. Each of k(k-1)/2 comparisons produces a matrix, which must be indexed against its parents (i.e. can find out where it came from). The convenient way to do this is to...
Hey all, why is this code throwing an out of memory error, when there is only 1 row in the database.. $request_db = mysql_query("SELECT * FROM requests WHERE haveplayed='0'") or die(mysql_error()); $request = mysql_fetch_array( $request_db ); echo "<table border=\"1\" align=\"center\">";...