What is tuning in WebLogic?

What is tuning in WebLogic?

It improves performance by reducing the number of database calls to load related beans in transactions when a bean and it’s related beans are expected to be used in that transaction. See Tuning WebLogic Server EJBs.

What are WebLogic threads?

Threads are execution points that WebLogic Server delivers its power and execute work. Managing threads is very important because it may affect the overall performance of the entire system. In previous releases of WebLogic Server 9.0 we had multiple execute queues and user defined thread pools.

How do I set thread pool size in WebLogic?

Controlling the Size of Thread Pool One way of doing it is by setting them from the command line: -Dweblogic. threadpool. MinPoolSize=5 -Dweblogic.

How do I increase the thread pool size in WebLogic 12c?

Weblogic Thread Pool Configuration

1. Open Weblogic console.
2. go to MS -> Server start -> take the session.
3. Add below values in start up arguments. -Dweblogic.threadpool.MinPoolSize=100.
4. Restart the server.
5. Same steps needs to be repeated for rest of the MS in the weblogic domain.

What is garbage collection in WebLogic?

Memory management, known as “garbage collection” is the process of clearing “dead” objects from the heap, thus releasing that space for new objects. WebLogic JRockit JVM Garbage Collectors.

How many threads can WebLogic handle?

Threads Maximum: Specify the maximum number of threads that this execute queue can have; this value prevents WebLogic Server from creating an overly high thread count in the queue in response to continual overflow conditions. By default, WebLogic Server sets Threads Maximum to 400.

What causes stuck threads in WebLogic?

WebLogic Server automatically detects when a thread in an execute queue becomes “stuck.” 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.

How do I increase the number of threads in WebLogic?

In the table of configured execute queues, click the name of the default execute queue to display the Execute Queue Configuration tab. Increase or decrease, as appropriate, the default Thread Count value. Click Apply to apply your changes. Reboot the selected server to enable the new execute queue settings.

How do I increase memory in WebLogic?

To increase the WebLogic Server application server memory settings:

1. Stop your application server.
2. Open the startWebLogic script file.
3. Find the following line and alter the values to suit your server usage.

What’s the self tuning thread size limit for WebLogic?

Self-tuning Thread Pool [7] WebLogic uses work managers with a variable and self-tuning number of worker threads. By default, the self-tuning thread pool size limit is 400. This limit includes all running and idle threads, but does not include any standby threads.

How does a single thread pool work in WebLogic?

Now WebLogic Server uses a single thread pool, in which all types of work are executed. WebLogic Server prioritizes work based on rules you define, and run-time metrics, including the actual time it takes to execute a request and the rate at which requests are entering and leaving the pool.

How does the work manager work in WebLogic?

WebLogic Server prioritizes work based on rules you define, and run-time metrics, including the actual time it takes to execute a request and the rate at which requests are entering and leaving the pool. WebLogic uses work managers with a variable and self-tuning number of worker threads. By default, the self-tuning thread pool size limit is 400.

What should the size of the thread pool be?

The thread pool allocates threads to process the requests of service servers and client servers. The default value of the selfTuningThreadPoolSizeMax MBean attribute is 400. Depending on the provider and consumer requests, you can increase the pool size to a maximum of 65534.