{"id":3097,"date":"2018-09-22T16:02:17","date_gmt":"2018-09-22T08:02:17","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3097"},"modified":"2018-09-22T16:02:17","modified_gmt":"2018-09-22T08:02:17","slug":"%e5%ae%9a%e6%97%b6%e5%99%a8-oomoutofmemoryerror-%e4%ba%86%ef%bc%8c%e5%85%b6%e4%bb%96%e7%ba%bf%e7%a8%8b%e5%8f%97%e5%bd%b1%e5%93%8d%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3097","title":{"rendered":"\u5b9a\u65f6\u5668 OOM(OutOfMemoryError) \u4e86\uff0c\u5176\u4ed6\u7ebf\u7a0b\u53d7\u5f71\u54cd\u5417\uff1f"},"content":{"rendered":"<p>\n\t\u6700\u8fd1\u6709\u4eba\u5728\u5fae\u4fe1\u7fa4\u91cc\u95ee\u6211\uff0c\u5b9a\u65f6\u5668 OOM(java.lang.OutOfMemoryError: Java heap space)\u4e86\uff0c\u5176\u4ed6\u529f\u80fd\u8fd8\u6b63\u5e38\u5417\uff1f\n<\/p>\n<p>\n\t\u8bf4\u5b9e\u8bdd\u6211\u4e4b\u524d\u5728\u6d66\u53d1\u7684\u65f6\u5019\uff0c\u4e5f\u6709\u9047\u5230\u8fc7\u3002\u4e00\u4e2a\u540c\u4e8b\u5199\u4e86\u4e00\u4e2a\u5b9a\u65f6\u5907\u4efd\u6570\u636e\u7684\u529f\u80fd\uff0c\u6709\u4e00\u6b21\u505a\u6d3b\u52a8\u5bfc\u81f4\u6570\u636e\u91cf\u589e\u4e86\u597d\u51e0\u500d\uff0c\u5907\u4efd\u7684\u65f6\u5019\u5b9a\u65f6\u4efb\u52a1\u53d1\u751f\u4e86 OOM\uff0c\u5bfc\u81f4\u6570\u636e\u6ca1\u6709\u5907\u4efd\u6210\u529f\u3002\u8fd9\u4e2a\u95ee\u9898\u76f4\u5230\u7b2c\u4e8c\u5929\u624d\u88ab\u53d1\u73b0\uff0c\u56e0\u4e3a OOM \u540e\uff0c\u5176\u4ed6\u529f\u80fd\u90fd\u6b63\u5e38\uff0c\u4e1a\u52a1\u90fd\u6ca1\u53d1\u73b0\u3002\n<\/p>\n<p>\n\t\u7b2c\u4e8c\u5929\u662f\u600e\u4e48\u53d1\u73b0\u7684\u5462\uff1f\u56e0\u4e3a\u7b2c\u4e8c\u5929\u4e1a\u52a1\u53d1\u73b0\u5b9a\u65f6\u53d1\u77ed\u4fe1\u7684\u5b9a\u65f6\u4efb\u52a1\u4e0d\u6267\u884c\u4e86\uff0c\u4e8e\u662f\u5927\u5bb6\u4e00\u987f\u6392\u67e5\u53d1\u73b0\u7cfb\u7edf\u5728\u6628\u5929\u5c31\u5df2\u7ecf OOM \u4e86\u3002\u73b0\u5728\u5f71\u54cd\u6269\u5927\u4e86\uff0c\u5bfc\u81f4\u5176\u4ed6\u529f\u80fd\u4e0d\u53ef\u7528\uff0c\u8fdb\u800c\u8513\u5ef6\u5230\u6574\u4e2a\u7cfb\u7edf\u3002\n<\/p>\n<p>\n\t\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u5148\u4e0d\u8bf4\u8fd9\u4e2a\u5907\u4efd\u5408\u4e0d\u5408\u7406\uff0c\u6211\u4eec\u4ece JVM \u5185\u5b58\u7ed3\u6784\u6765\u8bf4\u8bf4\u4e3a\u4ec0\u4e48\u4e00\u4e2a\u7ebf\u7a0b OOM \u4e86\uff0c\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u53d7\u5f71\u54cd\u3002\n<\/p>\n<p>\n\t\u8fd9\u4e2a\u4e0d\u53d7\u5f71\u54cd\uff0c\u5927\u5bb6\u522b\u8bef\u4f1a\u3002\u4e00\u4e2a\u7ebf\u7a0b OOM \u540e\uff0c\u5176\u4ed6\u7ebf\u7a0b\u662f\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\u7684\uff0c\u4f46\u662f\u5185\u5b58\u6cc4\u9732\u4e4b\u540e\u8fdb\u800c\u4f1a\u5bfc\u81f4\u6574\u4e2a\u7a0b\u5e8f\u5185\u5b58\u6ea2\u51fa\uff0c\u6700\u7ec8\u7a0b\u5e8f\u4e0d\u53ef\u7528\u3002\n<\/p>\n<p>\n\t\u90a3\u4e48\u6211\u4eec\u4e0b\u9762\u8bf4\u4e00\u4e0b\uff0c\u4e00\u4e2a\u7ebf\u7a0b OOM \u4e86\uff0c\u4e3a\u4ec0\u4e48\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u53d7\u5f71\u54cd\u5462\uff1f\n<\/p>\n<p>\n\t\u8981\u56de\u7b54\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5148\u6765\u56de\u60f3\u4e00\u4e0b java \u7684\u5185\u5b58\u7ed3\u6784\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff1a\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"JVM \u5185\u5b58\u7ed3\u6784\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/jvm-memory.png\" style=\"width: 611px;height: 586px\" \/>\n<\/p>\n<p>\n\t\u6211\u4eec\u77e5\u9053\uff0c\u591a\u7ebf\u7a0b\u7684\u65f6\u5019\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u62e5\u6709\u4e00\u4e2a\u6808\u548c\u4e00\u4e2a\u7a0b\u5e8f\u8ba1\u6570\u5668\u3002\u6808\u548c\u7a0b\u5e8f\u8ba1\u6570\u5668\u7528\u6765\u4fdd\u5b58\u7ebf\u7a0b\u7684\u6267\u884c\u5386\u53f2\u548c\u7ebf\u7a0b\u7684\u6267\u884c\u72b6\u6001\uff0c\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\u8d44\u6e90\u3002\u5806\u662f\u7ebf\u7a0b\u5171\u4eab\u7684\uff0c\u6240\u4ee5\u7406\u8bba\u4e0a\u4e00\u4e2a\u7ebf\u7a0b OOM \u4e86\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5e94\u8be5\u53d7\u5f71\u54cd\u624d\u5bf9\u554a\uff0c\u5b9e\u9645\u4e0a\u5374\u5e76\u4e0d\u662f\uff0c\u8fd9\u662f\u4ec0\u4e48\u539f\u56e0\u5462\uff1f\n<\/p>\n<p>\n\t\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u6309\u7167\u6211\u4e0b\u9762\u7684\u8fd9\u6bb5\u4ee3\u7801\u81ea\u5df1\u53bb\u8dd1\u4e00\u4e0b\uff0c\u6d4b\u8bd5\u4e00\u4e0b\u8fd9\u4e2a\u5185\u5b58\u6ea2\u51fa\u3002\n<\/p>\n<pre class=\"brush:java;\">\r\npublic class HeapOutOfMemoryError {\r\n\t\/\/\u4e1a\u4f59\u8349\uff1awww.xttblog.com\r\n\tpublic static class OOMObject {}\r\n\tpublic static void main(String[] args) {\r\n\t\tnew Thread(() -&gt; {\r\n\t\t    while(true){\r\n\t\t        System.out.println(new Date().toString() + Thread.currentThread() + &quot;www.xttblog.com&quot;);\r\n\t\t        try {\r\n\t\t            Thread.sleep(1000);\r\n\t\t        } catch (Exception e) {\r\n\t\t            e.printStackTrace();\r\n\t\t        }\r\n\t\t    }\r\n\t\t}).start();\r\n\r\n\t\tnew Thread(() -&gt; {\r\n\t\t    List&lt;Object&gt; list=new ArrayList&lt;&gt;();\r\n\t\t\t\/\/ \u4e0d\u65ad\u521b\u5efa\u5bf9\u8c61\uff0c\u5e76\u4fdd\u8bc1GC Roots\u5230\u5bf9\u8c61\u4e4b\u95f4\u6709\u53ef\u8fbe\u8def\u5f84\uff0c\u907f\u514d\u5783\u573e\u56de\u6536\u6e05\u9664\u521b\u5efa\u7684\u5bf9\u8c61\r\n\t\t\twhile (true) {\r\n\t\t\t\tlist.add(new OOMObject());\r\n\t\t\t\tSystem.out.println(System.currentTimeMillis());\r\n\t\t\t}\r\n\t\t}).start();\r\n\t}  \r\n}<\/pre>\n<p>\n\t\u518d\u6d4b\u8bd5\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5c06\u5185\u5b58\u8bbe\u7f6e\u7684\u5f88\u5c0f\uff0c\u4fbf\u4e8e\u91cd\u73b0\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\n-Xms1m -Xmx2m<\/pre>\n<p>\n\t-Xms \u521d\u59cb\u5806\u5185\u5b58<br \/>\n\t-Xmx \u6700\u5927\u5806\u5185\u5b58\n<\/p>\n<p>\n\t\u7136\u540e\u7ed3\u5408 JvisualVM \u5de5\u5177\uff0c\u4f60\u4f1a\u770b\u5230\uff0c\u5728\u7a0b\u5e8f\u5185\u5b58\u6ea2\u51fa\u4e4b\u540e\uff0c\u6ea2\u51fa\u7684\u5185\u5b58\u7684\u7ebf\u7a0b\u6240\u5360\u7684\u5185\u5b58\u4f1a\u88ab\u5feb\u901f\u91ca\u653e\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff1a\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"JvisualVM\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/jvm-oom.png\" style=\"width: 470px;height: 136px\" \/>\n<\/p>\n<p>\n\t\u4e0d\u4f1a JvisualVM \u7684\uff0c\u53ef\u4ee5\u67e5\u770b\u6211\u7684\u8fd9\u7bc7\u6587\u7ae0\uff1a<a href=\"https:\/\/www.xttblog.com\/?p=200\" name=\"\u4f7f\u7528VisualVM\u5bf9JAVA\u7a0b\u5e8f\u8fdb\u884c\u6027\u80fd\u5206\u6790\u53ca\u8c03\u4f18\" target=\"_blank\" title=\"\u4f7f\u7528VisualVM\u5bf9JAVA\u7a0b\u5e8f\u8fdb\u884c\u6027\u80fd\u5206\u6790\u53ca\u8c03\u4f18 - \u4e1a\u4f59\u8349\">\u4f7f\u7528VisualVM\u5bf9JAVA\u7a0b\u5e8f\u8fdb\u884c\u6027\u80fd\u5206\u6790\u53ca\u8c03\u4f18<\/a>\u3002\n<\/p>\n<p>\n\t\u6839\u636e\u4e0a\u56fe\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u629b\u51fa OOM \u5f02\u5e38\u540e\uff0c\u5b83\u6240\u5360\u636e\u7684\u5185\u5b58\u8d44\u6e90\u4f1a\u88ab\u5feb\u901f\u7684\u91ca\u653e\u6389\uff0c\u4ece\u800c\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u7ebf\u7a0b\u7684\u8fd0\u884c\uff01\n<\/p>\n<p>\n\t\u53e6\u5916\u5f53\u4e00\u4e2a\u7ebf\u7a0b OutOfMemoryError \u540e\uff0c\u5982\u679c\u8fd9\u4e2a OutOfMemoryError \u88ab\u6355\u83b7\uff0c\u90a3\u4e48 catch \u4e4b\u540e\u541e\u6389\u7684\u8bdd\u7a0b\u5e8f\u8fd8\u80fd\u8bd5\u7740\u7ee7\u7eed\u8fd0\u884c\u3002\u53d1\u751f OutOfMemoryError \u4e4b\u540e\uff0c\u53ea\u662f\u5f53\u524d\u8fd9\u4e2a\u7ebf\u7a0b\u7533\u8bf7\u66f4\u591a\u7684\u5185\u5b58\u7684\u65f6\u5019\u4e0d\u88ab JVM \u5141\u8bb8\uff0c\u6240\u4ee5\u4f1a\u629b\u51fa OutOfMemoryError \u5f02\u5e38\u3002\u5f53\u629b\u51fa OutOfMemoryError \u5f02\u5e38\u540e\uff0c\u5f53\u524d\u8fd9\u4e2a\u7ebf\u7a0b\u4f1a\u88ab\u9000\u51fa\uff0c\u5b83\u6240\u5360\u7684\u5185\u5b58\u4f1a\u88ab JVM \u6e05\u7406\u6389\u3002\n<\/p>\n<p>\n\t\u90a3\u4e48 JVM \u4e3a\u4ec0\u4e48\u8981\u8fd9\u4e48\u8bbe\u8ba1\u5462\uff1f\n<\/p>\n<p>\n\t\u7b54\u6848\u662f\uff0cJava \u7a0b\u5e8f\u901a\u5e38\u4e0d\u662f\u4e3a\u4e86\u9002\u5e94\u610f\u5916\u7684\u5f02\u5e38\u800c\u8bbe\u8ba1\u7684\uff0cOOM \u4e4b\u540e\u53ef\u80fd\u5bfc\u81f4\u5e94\u7528\u72b6\u6001\u4e0d\u4e00\u81f4\uff0c\u5efa\u8bae\u6700\u597d\u91cd\u542f\u3002\n<\/p>\n<h2>\n\t\u53c2\u8003\u8d44\u6599<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t<a href=\"https:\/\/stackoverflow.com\/questions\/3058198\/can-the-jvm-recover-from-an-outofmemoryerror-without-a-restart\" name=\"Can the JVM recover from an OutOfMemoryError without a restart\" target=\"_blank\" title=\"Can the JVM recover from an OutOfMemoryError without a restart\">Can the JVM recover from an OutOfMemoryError without a restart<\/a>\n\t<\/li>\n<li>\n\t\t<a href=\"https:\/\/www.zhihu.com\/question\/33194730\" name=\"JAVA\u53d1\u751fOOM\u540e\u8fd8\u80fd\u8fd0\u884c\u4e48\uff1f\" target=\"_blank\" title=\"JAVA\u53d1\u751fOOM\u540e\u8fd8\u80fd\u8fd0\u884c\u4e48\uff1f\">JAVA\u53d1\u751fOOM\u540e\u8fd8\u80fd\u8fd0\u884c\u4e48\uff1f<\/a>\n\t<\/li>\n<\/ul>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=3097\">\u5b9a\u65f6\u5668 OOM(OutOfMemoryError) \u4e86\uff0c\u5176\u4ed6\u7ebf\u7a0b\u53d7\u5f71\u54cd\u5417\uff1f<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u6709\u4eba\u5728\u5fae\u4fe1\u7fa4\u91cc\u95ee\u6211\uff0c\u5b9a\u65f6\u5668 OOM(java.lang.OutOfMemoryError: Java he [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1699,731,1698,601,531],"class_list":["post-3097","post","type-post","status-publish","format-standard","hentry","category-java","tag-jvisualvm","tag-jvm","tag-oom","tag-outofmemoryerror","tag-531"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3097"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3097\/revisions"}],"predecessor-version":[{"id":3098,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3097\/revisions\/3098"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}