Deployment issue with updating properties file

Recently in our new environment, we got out of memory and perm gen errors while doing deployment on weblogic server. I have taken heap dump using below mentioned jmap command. command: jmap -dump:format=b,file=heap.bin 5004 Note: 5004 is weblogic server process id After that incresed the heap size from 1GB to 2GB and perm gen size from 512m to 640m. And then taken restart of weblogic instance and after that deployed application succesfully. After analying the heap dump using IBM memory analyzer tool, found the following classloader errors in analyzer console. ================================================================= 20 instances of "weblogic.utils.classloaders.ChangeAwareClassLoader", loaded by "sun.misc.Launcher$AppClassLoader @ 0xc0000f40" occupy 2,42,85,568 (27.16%) bytes. Biggest instances: •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc14e0770 - 30,27,624 (3.39%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc149e270 - 21,77,352 (2.44%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc0dc9300 - 21,23,592 (2.38%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc4b299d8 - 21,19,592 (2.37%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc3d556c0 - 19,94,592 (2.23%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc3d51248 - 19,17,592 (2.14%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc1358b08 - 18,90,544 (2.11%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc3d51738 - 18,42,968 (2.06%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc1359358 - 18,30,656 (2.05%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc13662c8 - 18,24,680 (2.04%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc13f45b0 - 17,62,784 (1.97%) bytes. •weblogic.utils.classloaders.ChangeAwareClassLoader @ 0xc4ed4ef8 - 17,07,752 (1.91%) bytes. Keywords sun.misc.Launcher$AppClassLoader @ 0xc0000f40 weblogic.utils.classloaders.ChangeAwareClassLoader ============================================================== I think this issue is related to weblogic classloader issue. If the memory leaks are happening due to a Weblogic Class, it can be a known issue or an undiscovered BUG. In this case, we need to check with Oracle Support. If it’s an Application Class, you need to contact the developers. Out of Memory can also happen due to third party codes such as database drivers. Thanks Krishna

introducing Myself

My name is Krishnakumar working as Weblogic Administrator past 3 years and also worked on below technologies.

Application Servers: Oracle Bea Weblogic, IBM Websphere, Apache Tomcat, JBoss, Oracle Aplication Server, Pramati Application Server

Web Servers: Apache web server, IIS, IBM Http Server, Oracle Http Server.
Applications: Ericsson Telcordia Weblogic

Weblogic Administration(8,9,11g,12c), Trouble Shooting, SSL Configuration, Application Deployment, Log analysis, Configuration, Performance Tuning(JDBC, Memory), Closing Vulnerabilities, Upgradation, Clustering, Heap dump analysis.

IBM Websphere: Webspehere Administration(6, 7 ND), SSL configuration at IHS level, Application deployment, Log analysis, Thread dump & GC analysis & Heap Dump Analysis, Configuring Global security, Clustering, Load Balancing.

Oracle Application Server: OAS Administration(10g, 10g R3), SSL Configuration at both OC4J and OHS level, Application deployment, Thread dump & GC analysis & Heap Dump Analysis, Log analysis.

Apache Web server: Configuring Apache infront of diffrent Application servers like Weblogic, Liferay Tomcat, Apache Tomcat, Pramati, JBoss.

Oracle Forms & Reports installation and configuration.