kandi X-RAY | javamelody Summary
kandi X-RAY | javamelody Summary
JavaMelody : monitoring of JavaEE applications
Top functions reviewed by kandi - BETA
- Collect other java informations .
- Write system actions .
- Reports statistics about java informations .
- Blur the image .
- Add host details .
- Called after unit test
- Methode permettant de charger toutes les params
- Creates a grid with the given initial coordinates .
- Methode d une alternate dateFormat de la pattern
- Write the system details .
javamelody Key Features
javamelody Examples and Code Snippets
Trending Discussions on javamelody
I want to switch from Axis2 1.6.4 to 1.7.9 due to various circumstances. the pom.xml and axis2.xml have been adjusted accordingly (by the Apache Migration Guide). Previously I build the project via Eclipse but now it should be build via maven. Axis2 is embedded into the project via maven-war-plugin.
Now I can't get the Endpoint to show up like before the switch to 1.7.9 . Your help would be much appreciated.
My Endpoint should be:
Edit: I also switched from Java 8 to 11
ANSWERAnswered 2021-Mar-30 at 09:55
After some research and help the solution has been found:
There appeared a breaking change in Axis2 1.7.0 (https://issues.apache.org/jira/browse/AXIS2-5340)
Adding the following lines to the axis2.xml fixed the problem for me:
so I have a simple project like:...
ANSWERAnswered 2021-Mar-24 at 09:20
As of Spring Boot 2.4, JUnit 5’s vintage engine has been removed from spring-boot-starter-test. If we still want to write tests using JUnit 4, we need to add the following Maven dependency:
I have a maven application running on JBoss EAP 7.2 . Below details:
- Build: Maven 3.6
- Server: JBoss EAP 7.2
- Java: OpenJDK 11
- JavaMelody Core: 1.83.0
- Package: EAR
- Application : Struts 2.5.22
- DB: Oracle 18c
- OJDBC Driver: 18.3
Although i managed to configure JavaMelody and see the main statistics, i can't seem to find a way to configure the SQL monitoring.
Currently, for my JDBC configuration i use the
java:jboss/datasources/myDS in my persistence.xml file, which reads the datasource from the standalone.xml of the JBoss server.
I have tried several changes in my persistence.xml file like adding:...
ANSWERAnswered 2020-Jun-01 at 10:52
JPA monitoring is completely different than SQL monitoring: do not try
net.bull.javamelody.jpa.provider to monitor SQL. And it is useless to try
hibernate.connection.driver_class if you use a datasource from JNDI.
For SQL monitoring, you can try to monitor SQL from the datasource in JNDI:
- either add a javamelody parameter datasource, for example with a system property:
- or rename your datasource to
Then check the "Debugging logs" at the bottom of the javamelody reports.
And because you are using an EAR, see https://github.com/javamelody/javamelody/wiki/UserGuideAdvanced#setup-javamelody-in-an-ear-file
My war application has running in jetty container
it runs well at begin , some time later it will throw the
java.lang.NoClassDefFoundError error just by same rest api interface .
And I'm sure the class is really exists at classpath.
i'm want to know why this happened and how to fix or avoid it !
there has one of them stacks:
ANSWERAnswered 2020-May-08 at 05:28
Looking at the stacktrace the failure is happening for com/uwaytech/modules/tdr/ctrl/TdrCtrl$1 which seems to be an anonymous class inside TdrCtrl. can you check the below link if it helps.
I am using javamelody to monitor my application in a tomcat8. The context.xml is defined like:...
ANSWERAnswered 2020-Apr-29 at 17:17
There was an escape issue in this part of the docs. It now says:
The parameter storage-directory is the name of the directory of storage (javamelody by default). If the name of the directory starts with '/' (or on Windows, with drive specifier followed by '\', or if its prefix is "\\"), it is considered as an absolute path, otherwise it is considered as relative to the temporary directory
So you can write in your context:
I have the parent project "giftcard-service" which I use only to build. All the code is in the module which is named "giftcard-service-main". I'm able to build (
clean install) giftcard-service but not able to deploy/run it, which we do by
mvn spring-boot:run command.
Since this is an enterprise/company project I would restrict some information for obvious reasons.
This is the error I get on console....
ANSWERAnswered 2020-Mar-20 at 14:51
Near the start of the Maven output, I see this line:
I have to monitor the jdbc connections using java melody in web application using the jdbc url and user name and parameter instead of JNDI.
Application is not using spring / hibernate.
I tried with passing the below system prameters using -D option....
ANSWERAnswered 2020-Mar-19 at 14:32
I could not find the solution to monitor using url and user name and password.
I converted application to use jndi connection pool and able to monitor.
Input: GCP, Kubernetes, java 11 spring boot 2 application
Container is started with memory limit 1.6GB. Java application is limiting memory as well -XX:MaxRAMPercentage=80.0. Under a "heavy" (not really) load - about 1 http request per 100 ms during about 4 hours application is killed by OOMKiller. Internal diagnostic tools is showing that memory is far from limit:
However GCP tools is showing the following:
There is a suspicious that GCP is measuring something else? POD contains only java app (+jaeger agent). The odd thing that after restart GCP shows almost maximum memory usage instead of slowly growing if it was memory leak.
ANSWERAnswered 2020-Jan-10 at 15:51
Per the log file, there are more than 10,000 started threads. That's a lot even if we don't look at the less that 2 CPUs/cores reserved for the container (limits.cpu = request.cpu = 1600 millicores).
Each thread, and its stack, is allocated in memory separate from the heap. It is quite possible that the large number of started threads is the cause for the OOM problem.
The JVM is started with the Native Memory Tracking related options (
-XX:NativeMemoryTracking=detail, -XX:+UnlockDiagnosticVMOptions, -XX:+PrintNMTStatistics) that could help to see the memory usage, including what's consumed by those threads. This doc could be a starting point for Java 11.
In any case, it would be highly recommended to not have that many threads started. E.g. use a pool, start and stop them when not needed anymore...
Some of the older Jenkins jobs on a build server cannot be updated via the web GUI. I can rollback to older configs using things like the job config history plugin, but normal updates cause it to say something in the bottom of the browser like,
Uploading (79%), progress up to 9x% and eventually it errors out in Chrome with
It doesn't do it for other old jobs, only a small handful. I ran diffs of their
config.xml and nothing stood out.
I also already uninstalled the MultiSCM plugin which apparently has caused a similar issue in the past.
I'm not getting any sort of warning or error in the Jenkins log itself when these updates fail.
I've also updated Jenkins to latest LTS as well as all the plugins.
Any idea what's going on or how to fix it?
In JavaMelody, it sees the POST failing, but doesn't give any indication why:
ANSWERAnswered 2020-Mar-07 at 00:41
This was so annoying to debug due to not knowing the origin of the error. None of the jenkins logs were helpful between
SEVERE. After working with our lead of devops for a couple days we couldn't find anything on the system or server settings that changed the behavior.
I ran across someone who had a similar issue on GitHub saying that for one of their plugins, it would break if there was an extra
EOL symbol. That got me thinking, could this be a parsing error for plugin input?
First I disabled everything that wasn't a build step. This fixed nothing. Then I started removing one plugin type at a time in the Build Step section and eventually narrowed it down to
Windows Batch Command build steps. Through trial and error I determined it was 1 of 3 batches and debugged it down to finally a single line. This was the part of the batch where it was hidden:
we are struggling here with a java.lang.NoClassDefFoundError that makes no sense.
The same WAR file runs perfectly in the server B, but throws a java.lang.NoClassDefFoundError on server A.
Server A (throws Exception):...
ANSWERAnswered 2020-Feb-05 at 20:28
It looks like Tomcat 8.5.50 contains a bunch of regression fixes in Catalina with resource loading which may be affecting the loading of Clojure source files. Suggest either downgrading to same as the working one or upgrading to 8.5.50.
No vulnerabilities reported
You can use javamelody like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the javamelody component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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