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Hello Naoto,   Thanks for the quick reply. I tried adding “-XX:-UseSplitVerifier” both to CATALINA_OPTS and JAVA_OPTS variables, still no luck!   Here is the complete log on startup of tomcat.   ************************ ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Full Agent Registration Info Resolver using selfService [true] Full Agent Registration Info Resolver using selfService [true] Full Agent Registration Info Resolver using selfService [true] Full Agent Registration Info Resolver using application name [Load Dev RDS] Full Agent Registration Info Resolver using tier name [ACME Backend Service] Full Agent Registration Info Resolver using node name [app-j-load-dev-stack] Install Directory resolved to[/home/ubuntu/AppDynamics/appagent] ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. [Thread-2] Wed Jan 16 16:42:10 UTC 2019[DEBUG]: AgentInstallManager - Full Agent Registration Info Resolver is running [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using selfService [true] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using selfService [true] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using selfService [true] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using application name [Load Dev RDS] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using tier name [ACME Backend Service] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Full Agent Registration Info Resolver using node name [app-j-load-dev-stack] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[DEBUG]: AgentInstallManager - Full Agent Registration Info Resolver finished running [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Agent runtime directory set to [/home/ubuntu/AppDynamics/appagent/ver4.5.5.24422] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: AgentInstallManager - Agent node directory set to [app-j-load-dev-stack] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: JavaAgent - Using Java Agent Version [Server Agent #4.5.5.24422 v4.5.5 GA compatible with 4.4.1.0 r6c48e890b0e5e4bdb691d9c7ded0d6cad742a64e master] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: JavaAgent - Running IBM Java Agent [No] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: JavaAgent - Java Agent Directory [/home/ubuntu/AppDynamics/appagent/ver4.5.5.24422] [Thread-2] Wed Jan 16 16:42:10 UTC 2019[INFO]: JavaAgent - Java Agent AppAgent directory [/home/ubuntu/AppDynamics/appagent/ver4.5.5.24422] Agent Logging Directory [/home/ubuntu/AppDynamics/appagent/ver4.5.5.24422/logs/app-j-load-dev-stack] 2019-01-16 16:42:11,041 INFO Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory. Running obfuscated agent Registered app server agent with Node ID[949057] Component ID[817247] Application ID [277344] Started AppDynamics Java Agent Successfully. Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/common/classes], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/common], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/server/classes], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/server], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/shared/classes], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:16 PM org.apache.catalina.startup.ClassLoaderFactory validateFile WARNING: Problem with directory [/usr/share/tomcat7/shared], exists: [false], isDirectory: [false], canRead: [false] Jan 16, 2019 4:42:17 PM org.apache.coyote.AbstractProtocol init INFO: Initializing ProtocolHandler ["http-bio-8080"] Jan 16, 2019 4:42:17 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 664 ms Jan 16, 2019 4:42:17 PM org.apache.catalina.core.StandardService startInternal INFO: Starting service Catalina Jan 16, 2019 4:42:17 PM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/7.0.52 (Ubuntu) Jan 16, 2019 4:42:17 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive /var/lib/tomcat7/webapps/oauth.war [WebappClassLoader@4ee2f9b4] warning javax.* types are not being woven because the weaver option '-Xset:weaveJavaxPackages=true' has not been specified Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/core_rt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/core is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/core is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/fmt_rt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/fmt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/fmt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/functions is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://jakarta.apache.org/taglibs/standard/permittedTaglibs is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://jakarta.apache.org/taglibs/standard/scriptfree is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/sql_rt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/sql is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/sql is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/xml_rt is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jstl/xml is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/xml is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://www.springframework.org/tags is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://www.springframework.org/tags/form is already defined Jan 16, 2019 4:42:25 PM org.apache.catalina.core.ContainerBase addChildInternal SEVERE: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/oauth]]     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)     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:632)     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)     at java.util.concurrent.FutureTask.run(FutureTask.java:262)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)     at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.VerifyError: (class: org/postgresql/Driver, method: timeout signature: (Ljava/util/Properties;)J) Stack size too large     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:278)     at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:246)     at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182)     at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:701)     at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:635)     at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:486)     at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:144)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:554)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:242)     at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141)     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321)     at org.apache.naming.NamingContext.lookup(NamingContext.java:842)     at org.apache.naming.NamingContext.lookup(NamingContext.java:153)     at org.apache.naming.NamingContext.lookup(NamingContext.java:830)     at org.apache.naming.NamingContext.lookup(NamingContext.java:167)     at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1098)     at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:677)     at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:271)     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)     at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5401)     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     ... 10 more Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.HostConfig deployWAR SEVERE: Error deploying web application archive /var/lib/tomcat7/webapps/oauth.war java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/oauth]]     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:904)     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)     at java.util.concurrent.FutureTask.run(FutureTask.java:262)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)     at java.lang.Thread.run(Thread.java:748) Jan 16, 2019 4:42:25 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive /var/lib/tomcat7/webapps/rds.war [WebappClassLoader@3311fda2] warning javax.* types are not being woven because the weaver option '-Xset:weaveJavaxPackages=true' has not been specified Jan 16, 2019 4:42:31 PM org.apache.catalina.core.ContainerBase addChildInternal SEVERE: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/rds]]     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)     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:632)     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)     at java.util.concurrent.FutureTask.run(FutureTask.java:262)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)     at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.VerifyError: (class: org/postgresql/Driver, method: timeout signature: (Ljava/util/Properties;)J) Stack size too large     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:278)     at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:246)     at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182)     at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:701)     at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:635)     at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:486)     at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:144)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:554)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:242)     at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141)     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321)     at org.apache.naming.NamingContext.lookup(NamingContext.java:842)     at org.apache.naming.NamingContext.lookup(NamingContext.java:153)     at org.apache.naming.NamingContext.lookup(NamingContext.java:830)     at org.apache.naming.NamingContext.lookup(NamingContext.java:167)     at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1098)     at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:677)     at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:271)     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)     at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5401)     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     ... 10 more Jan 16, 2019 4:42:31 PM org.apache.catalina.startup.HostConfig deployWAR SEVERE: Error deploying web application archive /var/lib/tomcat7/webapps/rds.war java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/rds]]     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:904)     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)     at java.util.concurrent.FutureTask.run(FutureTask.java:262)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)     at java.lang.Thread.run(Thread.java:748) Jan 16, 2019 4:42:31 PM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /var/lib/tomcat7/webapps/ROOT Jan 16, 2019 4:42:31 PM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-bio-8080"] Jan 16, 2019 4:42:31 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 14658 ms   *************************   Please let me know if you need anything else.   Thanks, Vijaysimha Naik ... 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After adding node name I see that my AppDynamics agent is started as shown below:   ``` Agent Logging Directory [/home/ubuntu/AppDynamics/appagent/ver4.5.5.24422/logs/app-j-load-dev-stack] 2019-01-16 16:42:11,041 INFO Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory. Running obfuscated agent Registered app server agent with Node ID[XXX] Component ID[XXX] Application ID [XXX] Started AppDynamics Java Agent Successfully. ```   However, I am still facing issues. Attaching the errors from catalina.out log file:   ``` SEVERE: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/rds]]     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)     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:632)     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)     at java.util.concurrent.FutureTask.run(FutureTask.java:262)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)     at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.VerifyError: (class: org/postgresql/Driver, method: timeout signature: (Ljava/util/Properties;)J) Stack size too large     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:278)     at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:246)     at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182)     at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:701)     at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:635)     at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:486)     at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:144)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116)     at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:554)     at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:242)     at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141)     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321)     at org.apache.naming.NamingContext.lookup(NamingContext.java:842)     at org.apache.naming.NamingContext.lookup(NamingContext.java:153)     at org.apache.naming.NamingContext.lookup(NamingContext.java:830)     at org.apache.naming.NamingContext.lookup(NamingContext.java:167)     at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1098)     at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:677)     at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:271)     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)     at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5401)     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     ... 10 more ```   I am trying to install Java agent on AWS EC2 instance which runs on Ubuntu 14.04.5 LTS. Also using java version "1.7.0_80".   Any help is appreciated.   Thanks, Vijay ... View more