WebLogic Error: Unable to Get File Lock, Will Retry

Unable to get file lock, will retry ...

This is a common issue for web logic user/developer. Developers are always facing this issue with file lock.Something went wrong.

Weblogic Console Error Log -

<31/01/2017 2:25:12 PM EST> <Info> <Security> <BEA-090906> <Changing the default Random Number Generator in RSA CryptoJ from ECDRBG to FIPS186PRNG. To disable this change, specify -Dweblogic.security.allowCryptoJDefaultPRNG=true>
<31/01/2017 2:25:12 PM EST> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Java HotSpot(TM) Client VM Version 17.0-b17 from Sun Microsystems Inc.>

<31/01/2017 2:25:23 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:25:33 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>
<31/01/2017 2:25:43 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:25:53 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:03 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:13 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:23 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:33 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:43 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:26:53 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:03 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:13 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:23 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:33 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:43 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:27:53 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:28:03 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:28:13 PM EST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<31/01/2017 2:28:18 PM EST> <Critical> <WebLogicServer> <BEA-000362> <Server failed. Reason:

There are 1 nested errors:

weblogic.management.ManagementException: Unable to obtain lock on /usr/java/Oracle/Middleware/user_projects/domains/base_domain/servers/AdminServer/tmp/AdminServer.lok. Server may already be running
    at weblogic.management.internal.ServerLocks.getServerLock(ServerLocks.java:206)
    at weblogic.management.internal.ServerLocks.getServerLock(ServerLocks.java:67)
    at weblogic.management.internal.DomainDirectoryService.start(DomainDirectoryService.java:74)
    at weblogic.t3.srvr.ServerServicesManager.startService(ServerServicesManager.java:461)
    at weblogic.t3.srvr.ServerServicesManager.startInStandbyState(ServerServicesManager.java:166)
    at weblogic.t3.srvr.T3Srvr.initializeStandby(T3Srvr.java:881)
    at weblogic.t3.srvr.T3Srvr.startup(T3Srvr.java:568)
    at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:469)
    at weblogic.Server.main(Server.java:71)

>
<31/01/2017 2:28:18 PM EST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED>
<31/01/2017 2:28:18 PM EST> <Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down>
<31/01/2017 2:28:18 PM EST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>

Solutions :-

You can fix the by simple one step. Just delete the AdminServer.lok file from  your domain.

I have deleted below , check the below commands ..

Go to the /tmp directory inside your weblogic domain.

cd  /usr/java/Oracle/Middleware/user_projects/domains/base_domain/servers/AdminServer/tmp

Checking the existing files inside /tmp directory.

dev@jdg-desktop /usr/java/Oracle/Middleware/user_projects/domains/base_domain/servers/AdminServer/tmp $ ls
AdminServer.lok  WebServiceUtils.ser  _WL_internal  _WL_user

Now delete the AdminServer.lok file from this /tmp directory. 

dev@jdg-desktop /usr/java/Oracle/Middleware/user_projects/domains/base_domain/servers/AdminServer/tmp $ rm -rf AdminServer.lok

Tomcat WAR Deployment: Properties File Not Found

This issue I faced while loading the war file on Tomcat. This may be a minor issue, but I faced this issue and spend some time to fix this issue.

Actually , I was working on Tomcat newly and I was not sure what configuration we need to load the properties file. Normally all the properties files are placed in class path.

I placed the properties file inside the Tomcat , but I don't know why this issue was coming.

Issue log :-

25/08/2015 1:58:08 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /customer_service_gateway-1.0.2-SNAPSHOT threw load() exception
java.io.FileNotFoundException: class path resource [customer_service_gateway/customer.properties] cannot be opened because it does not exist
    at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:157)
    at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:143)
    at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:98)
    at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:175)
    at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:156)
    at org.springframework.beans.factory.config.PropertiesFactoryBean.createInstance(PropertiesFactoryBean.java:113)
    at org.springframework.beans.factory.config.PropertiesFactoryBean.createProperties(PropertiesFactoryBean.java:98)
    at org.springframework.beans.factory.config.PropertiesFactoryBean.afterPropertiesSet(PropertiesFactoryBean.java:69)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1387)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1128)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:657)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5123)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5407)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:976)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1653)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
    at java.lang.Thread.run(Thread.java:662)

The issue was , tomcat loader was not able to locate the file . So , you need to configure this manually. 

Finally , I fixed this by configure the properties directory in tomcat. You need to explicitly mention the properties location from where your tomcat can read the library and other properties. But, its not always advisable .

You can add the <Tomcat Home Directory> into catalina.properties file. 

Example :-

 shared.loader=/usr/java/apache-tomcat-7.0.41

Note :- Catalina.properties file is inside <Tomcat Home Directory> /conf