How to configure connection pool in WebSphere?

How to configure connection pool in WebSphere?

To configure the maximum threads for the web container, click Servers > Server types > WebSphere application servers > server > Thread Pools, and modify the web container property. Lower settings, such as 10 – 30 connections, perform better than higher settings, such as 100.

What is thread pool in WebSphere application server?

Description. A thread pool enables components of the application server to reuse threads, which eliminates the need to create new threads at run time. Creating new threads expends system resources and can possibly lead to a DoS. Perform loading for your application to determine the required thread pool sizes.

What is purge policy in WebSphere?

PURGE POLICY. Specifies how to purge connections when a stale connection or fatal connection error is detected. Valid values are EntirePool and FailingConnectionOnly. ENTIRE POOL. If you set the purge policy for this data source object to EntirePool, all connections in the pool are marked stale.

What is REAP time in WebSphere Connection Pool?

Reap Time. Specify the interval, in seconds, between runs of the pool maintenance thread. For example, if Reap Time is set to 60, the pool maintenance thread runs every 60 seconds. The Reap Time interval affects the accuracy of the Unused Timeout and Aged Timeout settings.

Why do we need connection pooling?

Using connection pools helps to both alleviate connection management overhead and decrease development tasks for data access. Each time an application attempts to access a backend store (such as a database), it requires resources to create, maintain, and release a connection to that datastore.

What is max pool size in connection string?

A connection pool is created for each unique connection string. When a pool is created, multiple connection objects are created and added to the pool so that the minimum pool size requirement is satisfied. Connections are added to the pool as needed, up to the maximum pool size specified (100 is the default).

How do I increase thread count in Websphere?


  1. Leave the user ID blank; then, click Log in and enter the console.
  2. Click Servers > Application Servers > Server1 > Thread Pools when logged in.
  3. Set the Minimum value to 25 and the Maximum value to 75 for Web Container.
  4. Click Apply to save the settings.

What is WebContainer thread pool?

The WebContainer thread pools are used for HTTP requests that come from the client. Figure 1 displays the WebContainer thread pools settings. These settings were chosen due to the high HTTP traffic generated by the workload, to prevent requests from being queued in the transport chain when all threads are busy.

What is the maximum connection pool size in Websphere?

That means that the backend resource should be able to handle a load of 100 connections without any performance or other issues. It is not wise to set the Maximum connections size value higher than what the backend resource is able to handle.

How do I improve my connection pool?

To increase the JDBC connection pool size:

  1. In WebSphere Application Server, navigate to Resources > JDBC > Data Sources.
  2. Select the data source to modify.
  3. Click Connection pool properties.
  4. Change the default number of connections for the Maximum Connections setting.
  5. Click Apply.

Do we need to close connection in connection pool?

Yes, certainly you need to close the pooled connection as well. It’s actually a wrapper around the actual connection. It wil under the covers release the actual connection back to the pool.

How do I increase my connection pool size?

How do I see Appdynamic threads?

You can view thread contention information for service endpoint methods in AppDynamics. Call graphs identify service endpoint methods with this icon: . Select More > Service Endpoints from the menu bar to view thread contention information by service endpoint.

What causes hung threads in WebSphere?

A common cause of hung threads in WebSphere Application Server is when a thread sends a request to a backend server, such as a database, and waits an unexpectedly long time for a response.

How do I increase thread count in WebSphere?

  • August 23, 2022