![\"weblogic\"](\"https:\/\/onlineappsdba.com\/wp-content\/uploads\/2016\/02\/weblogic.png\")
\nThis post covers about GC log generation that is Garbage collection log generation in WebLogic and is must read if you are learning WebLogic.<\/p>\n
\nThis post covers about GC log generation that is Garbage collection log generation in WebLogic and is must read if you are learning WebLogic.<\/p>\n
We cover this GC log generation topic in our Oracle WebLogic Training<\/a> with other topics (such as creating WebLogic domain, managed servers, clustering,deployment, logging, JMS, JTA, JDBC, JMX or security, Performance tuning and Troubleshooting<\/span>).<\/p>\n <\/p>\n 1. Make java file by using below steps.<\/p>\n vi TestJavaGCLogging.java<\/strong><\/p>\n 2. Write below sample code in TestJavaGCLogging.java file.<\/p>\n package com.test;<\/span><\/p>\n import java.util.Map;<\/span> public class TestJavaGCLogging {<\/span><\/p>\n \/**<\/span> for (int i = 0; i < 5000000; i++) {<\/span> System.out.println(“MAP size: ” + objectMap.size());<\/span> for (int i = 0; i < 5000000; i++) {<\/span> System.out.println(“MAP size: ” + objectMap.size());<\/span> for (int i = 0; i < 5000000; i++) {<\/span> System.out.println(“MAP size: ” + objectMap.size());<\/span> }<\/span> 3. Compile your java program by using below command.<\/p>\n \u00a0javac TestJavaGCLogging.java<\/strong><\/p>\n 4. Execute your java program by using below command.<\/p>\n java TestJavaGCLogging.java<\/strong><\/p>\n \u00a0 Output:<\/span><\/strong><\/p>\n <\/p>\n If you want to learn more on WebLogic like above or wish to discuss challenges you are hitting in Oracle WebLogic Server, register for our Oracle WebLogic Administration\u00a0<\/strong>Training<\/strong>.<\/a><\/p>\n We are so confident on quality and value of our training that We provide 100% Money back guarantee<\/strong> so in unlikely case of you being not happy after 2 sessions, just drop us a mail before third session and We\u2019ll refund FULL money.<\/span><\/p>\n Did you subscribe to our YouTube Channel<\/a>\u00a0(435 already subscribed) and Private FaceBook Group<\/a>\u00a0(666 Members)\u00a0?<\/p>\n","protected":false},"excerpt":{"rendered":" This post covers about GC log generation that is Garbage collection log generation in WebLogic and is must read if […]<\/p>\n","protected":false},"author":115,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[41,42,217],"tags":[],"class_list":["post-9828","post","type-post","status-publish","format-standard","hentry","category-trainings","category-troubleshooting","category-weblogic"],"yoast_head":"\nGC Log Generation<\/h2>\n
\n import java.util.HashMap;<\/span><\/p>\n
\n * @param args<\/span>
\n *\/<\/span>
\n public static void main(String[] args) {<\/span>
\n Map<Integer, Object> objectMap = new HashMap<Integer, Object>();<\/span><\/p>\n
\n Object obj = new Object();<\/span>
\n objectMap.put(i, obj);<\/span>
\n }<\/span><\/p>\n
\n System.gc();<\/span><\/p>\n
\n Object obj = new Object();<\/span>
\n objectMap.put(i, obj);<\/span>
\n }<\/span><\/p>\n
\n System.gc();<\/span><\/p>\n
\n Object obj = new Object();<\/span>
\n objectMap.put(i, obj);<\/span>
\n }<\/span><\/p>\n
\n System.gc();<\/span><\/p>\n
\n }<\/span><\/p>\n\n[GC (Allocation Failure)\u00a0 61164K->57832K(251392K), 0.0982666 secs]<\/div>\n[GC (Allocation Failure)\u00a0 115498K->115328K(316928K), 0.1344700 secs]<\/div>\n[GC (Allocation Failure)\u00a0 231564K->238464K(371200K), 0.2023053 secs]<\/div>\n[Full GC (Ergonomics)\u00a0 238464K->213428K(593408K), 1.5529075 secs]<\/div>\n[GC (Allocation Failure)\u00a0 344500K->376196K(659456K), 0.1887039 secs]<\/div>\n[Full GC (Ergonomics)\u00a0 376196K->326801K(907776K), 1.7682597 secs]<\/div>\nMAP size: 5000000<\/div>\n[GC (System.gc())\u00a0 346187K->345753K(972800K), 0.0677305 secs]<\/div>\n[Full GC (System.gc())\u00a0 345753K->345580K(972800K), 2.3864599 secs]<\/div>\nMAP size: 5000000<\/div>\n[GC (System.gc())\u00a0 505471K->423852K(1006592K), 0.2583115 secs]<\/div>\n[Full GC (System.gc())\u00a0 423852K->345580K(1006592K), 2.8451946 secs]<\/div>\nMAP size: 5000000<\/div>\n[GC (System.gc())\u00a0 501868K->423860K(1006592K), 0.2246933 secs]<\/div>\n[Full GC (System.gc())\u00a0 423860K->345580K(1006592K), 1.8027748 secs]<\/div>\n<\/div>\n