12. internal. getState() print ‘Status of Jul 21, 2020 · When stuck thread increase in WebLogic Server alarm will be triggered. Is there any way to kill these threads which got stuck? I don't want to hinder the activities of the users in another managed servers. It can simply takes a long time to execute the request. You have two options: make processing faster. 163. Jan 29, 2015 · Tuning = stuck thread reporting. Oct 12, 2012 · If you see Stuck threads like below in the WebLogic server log then follow the steps mentioned to fix this issue. Namrta. I'm getting stuck threads intermittently in one of the managed servers. Once installed you will also need to copy the check_wlsagent. lookup(TemplateRegistry:198), see dump below. ServletRequestImpl Jul 24, 2020 · Stuck threads will reduce the ebs performance and it’s very important activity to DBA’s. If you need to script some kind of monitoring tool, WLST is extremely powerful. 0_80. xml file and reboot the server. Sep 25, 2023 · warning Symptom{STUCK_THREADS,HIGH, ThreadPoolRuntime, ThreadPool has stuck threads} Weblogic Logs: <[STUCK] ExecuteThread: '7' for queue: 'weblogic. Possibly due to stuck threads. Apr 26, 2010 · Weblogic does NOT kill stuck threads after the StuckThreadMaxTime. Stuck Thread Handling WebLogic Server checks for stuck threads periodically. 0 Weblogic server tries to suppress current working thread and begins processing the new request. flush(); The problem we're seeing in WebLogic is lots of STUCK threads, so we dumped the thread stack and found some threads getting stuck at org. By Default, the WLS For example, if you have four processors, then four threads can be running concurrently with the number of stuck threads. Scenario 1: Every alert we need to check the log file and investigate based on Jul 10, 2018 · I could see the health show "Warning" and the reason "ThreadPool has stuck threads". Feb 12, 2016 · 1. 0 and later: Frequent Stuck Threads In Imaging ExecuteThread: '31' for queue: 'weblogic. java weblogic. As per my best knowledge you cannot do it without re-boot . Related questions. Enter a title that clearly identifies the subject of your question. NOTE: Server is in running state. So, you want the execute threads to be 4 + the number of stuck threads. Potentially, you could go to the weblogic admin console and restart the application. i. Use WLST and threadDump() The first option has usually my preference. Goal. 6. The application is shutdown by bringing it into admin mode. References. First, set the use81-style-execute-queues element to true in the configuration file. Jun 13, 2016 · Is the client on Weblogic or the web service hosted on Weblogic or both? Can you check netstat -an | grep . Stuck Thread Timer Interval: Enter the Dec 24, 2012 · Alternatively you can use something as simple as a http check on the port of the server to see if it responds. To determine the amount of stuck threads, see Tuning the Execute Thread Detection Behavior. we can see the servers are in warning state. You can configure Node Manager or a third-part high-availability solution to restart the server instance for automatic failure recovery. servlet. Login to weblogic admin console with admin credentials. The definition of "world" depends on the garbage collector being used and context. Aug 17, 2011 · In threads tab make sure health is OK and there are no stuck threads i. rnel. Stuck Thread. The timer starts when the thread begins processing the request within the server. xml file, setting the use81-style-execute-queues element to true. sh plugin from the Nagios XI server to your WebLogic server. Symptoms. This is not intended to be a comprehensive guide to all Stuck Thread issues. OS: Centos Weblogic: WebLogic Server Version: 10. OBI 12C Weblogic and Em not opening. just drap the thread dump file into the samuria console . One socket reader thread is usually in the To run WebLogic Server in the 81-style-execute-queues mode, and be able to tune the thread count, an additional step is needed. WebLogic Serverは、設定した期間、作業状態が継続した(アイドルでない)場合、スレッドをスタック状態と診断します。 サーバーのスレッド検出動作は、スレッドがスタック状態と診断されるまでの時間や、サーバーがスタック・スレッドをチェックする頻度を Dec 25, 2020 · Is Weblogic 12c ThreadPoolRune JMX Counter available in Dyntrace v1. at the the time we can login to the particular warning server. Increased Max Stuck Thread. Mark the server instance as failed and shut it down it down if there are stuck threads in the server. “StuckThreadMaxTime” parameter). To determine the amount of stuck threads, see Detecting "Stuck" Threads. Otherwise, you might have to use your own custom-built OneAgent extension. Default value for “StuckThreadMaxTime” is 10 minutes. If you have not already done so, stop the WebLogic Server instance. Apr 19, 2013 · at oracle. and it looks like Dyntrace doesnt see this in its Weblogic JXM editor WebLogic Server automatically detects when a thread in an execute queue becomes “stuck. The only thing you can do is to figure if you can somehow detect such situations while they occur to then collect thread dumps and to log the results. Step 2: if It will show the oacore server in “warning state” then we need to check. ") #11g #webcenter #weblogic #weblogic-portal. Select the Configuration -> Tuning tab in the right pane. Problem can happen any time and any load condition, with no pattern to the occurrences. '19' for queue: 'weblogic By default, WebLogic Server considers a thread to be "stuck" after 600 seconds of continuous use. 2. cmd or setDomainEnv. In WL 9 and 10, WebLogic allocates 33% of server threads to act as socket readers by default. We need to monitor stuck thread count. admin) is aware that the thread has crossed 10 mins (600 sec = 10 min, not 15) This is a configurable value. In you have stuck threads but the WebLogic Console is still available, you can go to Environment, Servers and select a server. At the time of stuck threads. e stuck status=false like below. 24. msgpack. 1. 解決策: 次の手順に従って、「スタック・スレッド最大時間」設定の値を大きくします: WebLogicコンソールにログオンします If the WLSAgent cannot be used then NCPA will need to be installed on the WebLogic server as per the Installing NCPA documentation. 3) Optimize the program and reduce the processing time. do", which is more than the configured time (StuckThreadMaxTime) of " 600" seconds Aug 3, 2023 · Oracle WebLogic Server - Version 10. This post contains a sample script that sends an alert email whenever stuck threads exist, and in the comments section you will find some samples of Dec 14, 2019 · WebLogic Stuck Threads: Understanding Hogger and Stuck threads Stuck Threads are threads that are blocked, and can’t return to the threadpool for a certain amout of time. driver. Solution. 21. If all application threads are stuck, a server instance marks itself failed, if configured to do so, exits. Dec 15, 2017 · In general no, but if for example the stuck thread is holding a lock on an object (database, file, etc. I have recently configured obi 12c application ver. Mar 8, 2024 · Oracle WebCenter Content: Imaging - Version 12. Aug 3, 2023 · In this Document. Before officially collecting garbage, GC will invoke the object's finalize (). – > Stuck Threads are only flags, there to warn you that this thread is taking too long. Can anyone please help me in understanding, why thread dump does not get generated from console and Why I am getting the message saying server must be running. In work load tab make sure pending requests are not too many, else you need to look at the number of work managers and there health and work done. Due to this issue, users see a lot of performance issues and sometimes cannot even access the EBS instance when this issue Jul 28, 2015 · If WL console is unresponsive then it means that you Admin server thread is stuck, so you need to kill you Admin server Java process and restart it . set StuckThreadMaxTime with bigger value (its placed on weblogic console in: domain > Environment > Servers > Admin Server > Configuration/Tuning) edited Mar 11 Jul 1, 2018 · 0. e. TemplateRegistry. ” Because a stuck thread cannot complete its current work or accept new work, the server logs a message each time it diagnoses a stuck thread. on JDBC tab make sure all datasources are in RUNNING state. When the system is under stress, STUCK threads are seen in WebLogic logs at regular intervals. By Default, the WLS comes with 600 secs. 0): setDomainEnv. 0 and later: Stuck Threads Issue in WebLogic. 4 Aug 7, 2023 · Oracle WebLogic Server - Version 12. Oracle WebLogic Server - Version 10. If the Configurator does not respond, restart it. However, it also requires careful tuning to optimize its performance and avoid issues such as stuck threads, deadlocks, or memory leaks. EDITED: Another solution which is useful when you are trying to read from a socket and you are not getting any response from the server is the following: An RMISocketFactory instance is used by the RMI Work Manager minimum and maximum constraints should be set based on the maximum load. Here you can look at threads and identify stuck and hogging threads. Is it possible to monitor web sessions and Stuck threads through the WebLogic Admin Console? Solution The execution time of SQL statement is too long. In the body, insert detailed information, including Oracle product and version. It may be a small cluster of threads or all of them. Then, explicitly create the weblogic. Thread dumps show following stuck threads: Changes Cause . A thread might get stuck due to various reasons. Michel. Maximum Capacity: from 15 to 500. answered Apr 21, 2015 at 21:32. – May 31, 2012 · Shut down the application if there are stuck threads in the application. Use the WebLogic Console to change this value (base_domain > Environment > Servers > Admin Server > Configuration/Tuning). 0 version and JDK 1. clientTimeout setting in order to avoid thread stuck situations when the target server is experiencing problems. One thread dump is not enough to analyze the problem. Cause: The number of threads assigned to this work manager has reached the configured value in the maximum threads constraint Feb 17, 2021 · redirect ('/dev/null','true') ## Print all server names and the number of stuck threads we counted per server. LongRunning Dec 16, 2023 · Click to get started! My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. ## Format for Nagios output etc. This document provides comprehensive guidance on how to tune WebLogic Server parameters, monitor its health, and troubleshoot common problems. Consider Paul's rocket mass heater . We are facing issue in our production environment with multiple blocking threads and while checking the thread dumps have found the below stack trace where in 14 blocking threads were present with same description. Also, consider setting the WebLogic Server “Stuck Thread Max Time” value from its default 600 seconds to a larger value such as 1200 seconds. May 17, 2009 · Socket Reader Threads accept the incoming request from the Listen Thread Queue and put it on the Execute Thread Queue. out in the Dec 22, 2019 · 3. It cannot do so, the message is only a status info so that you (i. Default execute queue from the Administration Console and reboot the server. WebLogic stuck thread protection. Servers -> Some_Server -> Configuration -> Tuning -> Stuck Thread Max Time This will check on the Stuck Thread Timer Interval for any and all stuck threads and report it in the log file for the server like: 'WebLogic. The queue monitors throughput over time and based on history, determines whether to adjust the thread count. 3 Stuck Threads. ADF application is deployed in this cluster. 3. Any help with the below is much appreciated. Step 1: Go to the weblogic console and check for managed server status like oacore. Note: This recommendation is highly application-dependent Jan 22, 2024 · Oracle WebLogic Server - Version 12. 6 and later: Stuck Threads in WebLogic Server. Jan 16, 2023 · Weblogic Admin utility. Click on Environment --> Servers --> Managed Server --> Monitoring --> Performance. Stuck Threads are threads that are blocked, and can't return to the threadpool for a certain amout of time. Changes. Then take the decision according to it. so at the end you will have a single log file which has around 20 - 25 seconds worth of action on the app server. In WL 8. I do not w To use user-defined execute queues in a WebLogic Server 10. Mar 17, 2022 · It seems you are looking for the hung threads. Tuning the Execute Thread Detection Behavior. WebLogic Server automatically detects when a thread in an execute queue becomes "stuck. From a command line or shell, a thread dump can be generated via the following command (deprecated from WLS 9. next(OracleResultSetImpl. Jan 15, 2019 · The following thread was extracted from a thread dump taken on a JVM instance running WebLogic Server. OracleResultSetImpl. Default (self-tuning)' has been busy for "641" seconds working on the request Feb 21, 2014 · 2. Make sure you export weblogic. but the 2nd one. 1. When facing slowdown conditions, you will normally see May 10, 2023 · In this Document. Login into WebLogic admin console; Navigate to Server > Monitoring > Threads > Dump Thread Stacks; WLST Aug 15, 2011 · 8. You can tune a server’s thread detection behavior by changing the length of time before a thread is diagnosed as stuck, and by changing the frequency with which the server checks for stuck threads. Mar 16, 2012 · After that change the Weblogic system status is complaining about the thread pool "Thread pool has stucked threads". Nov 25, 2014 · Weblogic monitors its threads and marks them as "stuck" after a certain period of time if they are not returning from a method like in a socket listener loop in thread's run method. Mar 11, 2016 · 3. I've done some changes as per some blogs suggest: 1. Aug 16, 2017 · HI All ,we are facing the thread stuck in the web logic frequently and we have to restart the planning services to resolve the issue. Here check for “Heap Free Percent” (It should be more percentage free) Also, check for count of the “Hogging Thread Count” which should be either 0 or very less. Jun 29, 2018 · One way to check if you have stuck threads is through Weblogic Admin console. You can try WLSDM. To configure WebLogic Server stuck thread detection behavior. * Stuck Thread Timer Interval: Enter the number of seconds, after which WebLogic Server periodically scans threads to see if they have been continually working for the length of time specified by Stuck Thread Max Time. Aug 13, 2012 · The WebLogic Diagnostic Image includes a thread dump and can be automatically fired upon certain JMX metric thresholds being crossed by configuring a Watch and corresponding Notification in a WebLogic Diagnostic Framwork (WLDF) System Module that is targeted at your server. java:228) Maybe it is just the query which is taking more than StuckThreadMaxTime and WL issues a Warning. During a GC sweep, the GC will "stop the world" to perform its cleanup. ). Jul 5, 2017 · 3. We are seeing server overloading (network IO), admin inaccessible errors. Jan 5, 2021 · In Weblogic, how can I change Work Manager's Stuck-Thread-Action using WLST and Jython. Oracle WebLogic Server - Version 12. Admin url –: -username -password THREAD_DUMP. In this post I will deconstruct this thread and describe the data it contains and the potential issues it may illuminate. Send a SIGQUIT, either via CTRL + \ ( CTRL + Break on Windows) or with a kill -3 <pid>. Also you can request a dump of the Thread stacks. template. This can be determined if you see the Nov 23, 2015 · WebLogic Console. Take several thread dumps to check what threads are doing. 0. Check JMS connections are not too high. serverRuntime = getMBean('/ServerRuntimes/server1') Get the thread pool MBean: Next, you can use the getThreadPoolRuntime() method to get the MBean for the thread pool. Firstly never troubleshoot stuck threads using only 1 dump, always take 3-4 dumps each spaced about 3-4 secs apart. My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. On EBS 12. 6 and later: How Stuck Thread Timeout and JTA timeout values are related? Mar 5, 2024 · Oracle WebLogic Server - Version 12. If a request is taking longer than 10 minutes, the stuck thread is reported to Oracle WebLogic Server server_name. Download samurai which checks for the blocked threads , deadlock threads . I tried to get the stuck thread count of To use user-defined execute queues in a WebLogic Server 10. To resolve an out-of-memory issue, see Section 24. WebLogic Server is in unresponsive state and health of the server is in warning state. Dec 16, 2023 · Click to get started! In this Document. ke. No, you can't. In this video, we will cover Troubleshooting of weblogic server, running with Warning HealthCheckout my below videos as well :Weblogic HTTP Extended Logging Jan 8, 2012 · There are many ways to do that. This ensures that proxy and business services should not depend on the WebLogic Server execute thread pool for execution and WebLogic Server has enough free or idle threads to process any ad-hoc requests from Service Bus without leading to stuck thread problems. The stack-trace in the log file looks as follows: <Error> <WebLogicServer> <BEA-000337> <[STUCK] ExecuteThread: '12' for queue: 'weblogic. [solution]: It can be solved by the following methods: 1) modify the stuckthreadmaxtime parameter, change the default 600s to 1200s, or other suitable values. kernel. If some thread doesn't return in 600 secs, It gets a flag 'stuck thread'. oracle. Check if the finalizer thread is blocked or waiting. There could be situations where these the requests waiting in queue could take up to 30-40 minutes to be Oracle Business Intelligence. Expand Environment and click on Servers in the left menu; Click on the Admin server or any managed server you want to check the stuck threads; Click on the Monitoring tab in the server properties; click on WebLogic Server automatically detects when a thread in an execute queue becomes “stuck. If you want a thread to run till the server or application stops, you have to mark your class with a @LongRunning (weblogic. import thread import time def checkHealth(serverName): while 1: slBean = getSLCRT(serverName) status = slBean. One set of thread dumps alone wont be too helpful to get to the root cause. for key in result: print (key + " has " + str (result [key]) + " stuck threads. Aug 31, 2012 · outputStream. In order to get this fixed you are trying to increase the thread pool following the steps as per the document in the link below. Default (self-tuning)’ has been busy for “631” seconds working on the request “weblogic. Jul 20, 2017 · A stuck thread does not always mean that the thread is waiting for something. sh depending on the OS. 3. Nov 26, 2011 · Does this message imply that my thread is aborted, or can it continue after this ? <[STUCK] ExecuteThread: '0' for q ueue: 'weblogic. 0 and later Information in this document applies to any platform. The thread dump you have provided seems to be just fine, the one thread marked stuck seems to one where you are trying to uninstall a composite, something uninstall does take time and cause 1 thread to be stuck, this has Dec 26, 2012 · STUCK: A stuck thread is identified by Weblogic when it is taking more time than the configured stuck thread time (default is 600 seconds). Services > Data Sources > EPMSystemRegistry > Configuration > Connection Pool. The long running task executed on timerExpired takes longer than the server wide StuckThreadMaxTime of 600 seconds. . This will put minimal load on the server. Default (self-tuning)' has been busy for "609" seconds working on the request "Http Request: /getSunPayment. WebLogic Server diagnoses a thread as stuck if it is continually working (not idle) for a set period of time. If the server is close to out of memory, all requests should slow down. Note: This recommendation is highly application-dependent. extensions. I'm using WebLogic 11g. it will give output like below. Increased database connection pool. we will get alerts. 205. <Error> <WebLogicServer> <BEA-000337> < [STUCK] ExecuteThread: ‘1’ for queue: ‘weblogic. Admin -url t3://weblogicadminconsoleurl:7001 -username username -password password THREAD_DUMP Weblogic Admin Console. Default (self-tuning)' has been busy for "626" seconds working on the request "Workmanager: default, Version: 0, Scheduled=false, Started=true, Started time: 626850 ms", which is more than このエラーは、WebLogic Server で「Stuck Thread Max Time:」のデフォルト値 600 秒を超過したために発生します。 回避方法: コンフィギュレータが応答しない場合は、再起動します。WebLogic Server の「Stuck Thread Max Time」値をデフォルトの 600 秒から 1200 秒などもっと Mar 21, 2019 · 0. If you have alarm from WLSDM stuck thread metric, follow the below instructions: · Quick health check of application server. For instance, the The first thing to check when there are Stuck Threads, is to generate a Thread Dump and analyze the threads that are being stuck. Default (self-tuning)' has been busy for "zzz" seconds working on the request "-----" , which is more than the configured time Oracle WebLogic Server is a powerful and scalable application server that can run various applications and services. 7. Your application threads are probably started like this: new Thread(new MyThreadClass())). 20201201-130524 . For example, the following thread is stuck waiting to process POST data: Cause Nov 26, 2011 · I've got the below code working on Weblogic Application Server 10. Stuck threads may result if the server is nearing out of memory. Similarly, if statistics indicate that fewer threads did not reduce throughput, WebLogic Apr 9, 2019 · 1. Stuck Thread Max Time: Enter the number of seconds, that a thread must be continually working before this server diagnoses the thread as being stuck. Select a discussion category from the picklist. 1, there are 3 socket reader threads by default. Dec 8, 2017 · For better clarification: BEA-002936. Also, Windows XP is eol and you know it. How to check Stuck Threads in logs – Doyensys Blog. Also, depending on what the stuck thread is doing, it may use excessive resources (cpu, memory, disk, etc. " Because a stuck thread cannot complete its current work or accept new work, the server logs a message each time it diagnoses a stuck thread. 問題: Account Reconciliation Managementが 「構成された時間 (StuckThreadMaxTime)」 を示すメッセージでタイムアウトします。. rmi. For example you could use the nagios plugin check_http to check the status of a particular server. We are using weblogic 10. Then you should look for you want to check is a stuck thread or long running Apr 19, 2011 · 1. Note that it is possible that some of your threads are doing legitimate work for over 10 minutes with Mar 27, 2020 · # Node Manager needs to be running to run this script. This note is intended to be one example of how to identify the cause of a "STUCK" thread in the WebLogic Server or Managed Server. Default (self StuckThreadMaxエラー. x find that some or all the OACore Managed servers are frequently going into Warning status with struck threads. 0 with two domains. jdbc. In between the refresh actions, identify the threads that are still executing the same request (slow running threads). For example, if you have four processors, then four threads can be running concurrently with the number of stuck threads. 4. (StuckThreadMaxTime) of “600” seconds in “server-failure-trigger”. We are using a builtin feature ' Use JMX/PMI extension editor to add custom metrics without coding. Becouse your processing takes 20min and default setting of StuckThreadMaxTime is set to 600 seconds, you will see such errors in logs. 6 Information in this document applies to any platform. Does it show the sockets in ESTABLISHED state? or some other state like TIME_WAIT or CLOSE_WAIT ? How long have you configured your stuck-thread-timeout? The default is 600 seconds, so does this operation take longer than 10 minutes? Sep 3, 2013 · Refresh the page every 3-5 seconds. For example, if historical throughput statistics indicate that a higher thread count increased throughput, WebLogic increases the thread count. Apr 24, 2013 · You can access the thread pool health details using WLST (WebLogic Scripting Tools) scripts (if you are familiar with Python, it should not be a problem), or by accessing JMX counters using Java. It could be that the stuck threads are generated by a problem in the code, by the unavailability of an external system, or it can even be expected behavior, in the case of some long-lasting operations in the Nov 7, 2016 · I'm having a Weblogic server with one Admin Server and 3 managed servers in a single cluster. 11 1. i am trying to open weblogic and Em console and its keeps loading forever ( though it had opened few days before while May 17, 2017 · The weblogic console only shows threads that it (the weblogic server) created and therefore monitors. Use jstack <pid> (or jstack -F <pid> if the process is hung) Use VisualVM. One of the them is working fine. com Aug 18, 2023 · Oracle WebLogic Server - Version 12. Take 4 or 5 sets of thread dumps at an interval of 5 seconds between each. Edit the config. By default, WebLogic Server considers a thread to be "stuck" after 600 seconds of continuous use. Also weblogic won't consider a thread assigned to a long running task as being stuck. The following commands executed on your WebLogic server as the root user will do this: Aug 20, 2012 · You could use the weblogic. If possible I would try: Find which query or queries are getting the threads stuck and check execution time. Problem. Info: maximum thread constraint constraintName is reached Description: maximum thread constraint constraintName is reached. Cause. You can read more about how weblogic 12 handles threads here: https://docs. x domain, you need to include the use81-style-execute-queues sub-element of the server element in the config. For example: When large BI report is running and the time it Nov 6, 2009 · We are able to configure by using "Work Managers" in WebLogic and putting a limit on the number of threads for that servlet. grep -i stuck logname. It notifies and attaches thread dump. 2. Worst case you have to give the customers/operators clear instructions how to gather dumps themselves to make them available to you. then check for the blocked threads or any deadlock threads. May 13, 2018 · An execute thread is classified as STUCK when the thread is stuck working on a request for more than the configured stuck thread maximum time (i. ' to get the hung threads for the traditional WebSphere. from here. 5 to 10. connector. Now you can go to Monitoring, Threads. Feb 23, 2023 · Symptoms. I suggest to investigate why the thread is taking so long and if it's possible to. Mar 9, 2023 · This MBean provides information about the server’s state and performance, including information about threads. For example, if we put maximim thread limit as 3, then if there are 10 parallel requests; 7 requests are in queue. You can try this feature in case it is available for Weblogic. Mar 8, 2016 · But, when I try to generate thread dump using kill -3 <PID>, it gets generated. May 15, 2020 · How Weblogic determine a thread to declare as hogging? A thread declared as Stuck if it runs over 600 secs (default configuration which you can increase or decrease from admin console). We're confident our code did not introduce this issue since, in the example above, it's clear we're using Apr 8, 2022 · I think this will cause weblogic to create a new thread for the task instead of taking a thread from the work manager thread pool. All Work Managers belonging to the application are shut down, and behave as described above. Third, Check the Performance and Thread of the Managed Server. ) called by other requests, these may be affected too. jar in your path; Execute a command on UNIX session: java weblogic. The thread dump will be generated in the defined server stdout. To launch a long running task, you need to set the LONGRUNNING_HINT to true in the ManagedTask that is launched. Mar 12, 2019 · In this post, we are going to share the Weblogic WLST Stuck Thread Monitoring Script which will trigger an email notification and create heap and thread dumps when the maximum Thread stuck count has reached the threshold. This need not be changed usually. start(), this does not use any weblogic API and are unknown to it. Gone is gone, end of story. 2) Increase the number of threads to prevent thread blocking. ucupsaelpmwdqwjnpqki