Handle Out Memory Error
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this how to handle out of memory exception in java site About Us Learn more about Stack Overflow the company Business Learn more out of memory exception java heap space about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x out of memory error in java example Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to how to catch out of memory error in java handle OutOfMemoryError in Java? [duplicate] up vote 9 down vote favorite 7 This question already has an answer here: How to deal with “java.lang.OutOfMemoryError: Java heap space” error (64MB heap size) 16 answers I have to serialize around a million items and I get the following exception when I run my code: Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOfRange(Unknown Source) at
Out Of Memory Exception In Java How To Solve
java.lang.String.
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What Is Outofmemoryerror In Java
Learn more about hiring developers or posting ads with us Programmers Questions Tags Users how to handle out of memory error in android Badges Unanswered Ask Question _ Programmers Stack Exchange is a question and answer site for professional programmers interested in conceptual questions about software out of memory exception java example development. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Do you handle http://stackoverflow.com/questions/511013/how-to-handle-outofmemoryerror-in-java Out-Of-Memory conditions? up vote 8 down vote favorite 1 What do you do when malloc returns 0 or new throws exception? Just halt or try to survive OOM condition/save the user's work? programming-practices exceptions share|improve this question edited Apr 25 '12 at 12:15 scarfridge 1,569819 asked Oct 3 '10 at 17:02 mbq 1,005717 3 Related on Stackoverflow stackoverflow.com/questions/763159/… –ysolik Oct 3 '10 at 17:07 11 Argh. I keep reading this as "out http://programmers.stackexchange.com/questions/9175/do-you-handle-out-of-memory-conditions of mana". Too many video games in my past, I think. :) –Adam Lear♦ Oct 3 '10 at 21:11 add a comment| 6 Answers 6 active oldest votes up vote 4 down vote accepted I'd avoid the OOM like avoiding a crash. Avoid doing huge chunk of work (and allocate huge chunk of memory) at once. Keep the data on the disk, trust the OS disk cache and make use of memory-mapped IO as much as possible, and only operate on a small part of data at a time. If large amounts of data need to be on-line (served with low latency) then keep them in the memory across several machines, like all the big search engine companies do. Or buy a SSD. share|improve this answer answered Oct 4 '10 at 6:19 rwong 10.9k12257 Apparently this makes sense most. –mbq Oct 7 '10 at 13:19 2 There was a great debate about how to handle OOM gracefully (RAII, exception safety, blah...) but once I realized that in a multithread system with multiple dynamic modules (some from third-party), even if your thread didn't crash, there's a moment of unfortunate time where every thread will see an OOM. If even a single one decided to go ahead, you can't do anything but eye-witness. –rwong Oct 7 '10 at
in One Webmaster Plugin Google Adsense Plugin Forums Advertise Contact Hire us We help customers create an http://crunchify.com/how-to-generate-out-of-memory-oom-in-java-programatically/ effective online presence...Crunchify Core Java and J2EE Tutorials and Tips How to Generate Out Of Memory (OOM) in Java ProgramaticallyHow to Generate Out Of Memory (OOM) in Java Programatically Last Updated on 26 April, 2016 by App Shah 1 Comment Everyone in java development face java.lang.OutOfMemoryError now out of and then, OutOfMemoryError (OOM) in Java is one problem which is more due to system's limitation (memory) rather than due to programming mistakes in most cases though in certain cases you could have memory leak which causing OutOfMemoryError. Below is a simple java program which will consume more out of memory and more memory every loop and finally system will go OOM.. CrunchifyGenerateOOM.java Java 12345678910111213141516171819202122232425262728293031323334 package com.crunchify.tutorials;public class CrunchifyGenerateOOM { /** * @author Crunchify.com * @throws Exception * */ public static void main(String[] args) throws Exception { CrunchifyGenerateOOM memoryTest = new CrunchifyGenerateOOM(); memoryTest.generateOOM(); } public void generateOOM() throws Exception { int iteratorValue = 20; System.out.println("\n=================> OOM test started..\n"); for (int outerIterator = 1; outerIterator < 20; outerIterator++) { System.out.println("Iteration " + outerIterator + " Free Mem: " + Runtime.getRuntime().freeMemory()); int loop1 = 2; int[] memoryFillIntVar = new int[iteratorValue]; // feel memoryFillIntVar array in loop.. do { memoryFillIntVar[loop1] = 0; loop1--; } while (loop1 > 0); iteratorValue = iteratorValue * 5; System.out.println("\nRequired Memory for next loop: " + iteratorValue); Thread.sleep(1000); } }} Output: 123456789101112131415161718192021222324252627282930313233343536 =================> OOM test started..Iteration 1 Free Mem: 66731080Required Memory for next loop: 100Iteration 2 Free Mem: 66378392Require