Skip to main content

JDBC Resources monitoring in weblogic

Hi everyone,

During my recent development with Oracle SOA when my client SOA admin team uploaded some BPEL project, it start giving error "ResourceLimitException : No resources currently available in pool to allocate to applications – Oracle SOA 11g".
As after new deployment of 3-4 BPEL project SOA server usages increased by more then 50% as compare to old usages so old default configuration of SOA11g was working fine.
Error stack-trace:
java.sql.SQLException: Internal error: Cannot obtain XAConnection weblogic.common.resourcepool.ResourceLimitException: No resources currently available in pool SOADataSource to allocate to applications, please increase the size of the pool and retry..
at weblogic.common.resourcepool.ResourcePoolImpl.reserveResourceInternal(ResourcePoolImpl.java:577)
at weblogic.common.resourcepool.ResourcePoolImpl.reserveResource(ResourcePoolImpl.java:342)
Error Cause:
Weblogic server throws the below exception when there is not enough database connections in the pool to serve the incoming requests reporting increasing the connection pool count.
The above exception is due to there is not enough connections available in the pool to service the requests.
To identify which datasource / connection pool requires more connection do the following.
  • Go to Weblogic Admin console
  • Go to Environment -> Servers
  • Select the server on which the connection pool needs to be monitored
  • Go to Monitoring -> JDBC
  • Customize the table to add the below two properties
This page will list all the datasources/ connection pools targeted to that particular server and how many connections are waiting to get the connection. If more number of connections are waiting, that is not a good which will cause performance impact and also cause stuck threads on the server if the wait time is going to be beyond the thread stuck time.
When any data source will not be responding then it's state will be overloaded (In my use case image it's in running state which shows that it's running fine.)
Solution to the above problem is to increase the number of connections in the connection pool.

Steps:
  • Go to WLS Console
  • Select Services -> Datasources -> select the datasource you want to change the pool size
  • Go to Configuration -> connection pool
  • Change the Maximum Capacity to the count which is required for your environment.

Comments

Post a Comment

Popular posts from this blog

Oracle SOA 12C rest adapter with Custom HTTP headers

Most existing web applications are connected through web services, which are commonly known as SOAP services. More and more users are relying on mobile devices for communication, and they’re looking for lighter ways to access enterprise information on the go. REST services are the answer for the mobile device platform, because they get rapid responses and fast access to data. Oracle SOA Suite 12 c  provides a complete set of service infrastructure components for designing, deploying, and managing composite applications. Oracle SOA Suite 12 c  enables services to be created, managed, and orchestrated into composite applications and business processes. Some time we have need to send HTTP headers in REST service, In OSB we use header component and add what ever is needed but in oracle SOA 12C it's little bit different. Let see how we can do it. Create one SOA Application. Create one SOA Sample project inside SOA Application. Go to composite and drag drop REST ...
32 comments
Read more

How to Change Weblogic Domain MODE to Production and Development.

Hi all,   today i experienced a little task to change the "Production mode" settings to FALSE in weblogic domain because due to production mode web service test client was not working. Setting up the mode to true was easy and straight forward but a little trick comes where for some reasons we had to rollback that change to test some issues.  If you want to know what are the differences between the two modes check this post  To configure all servers in a domain to run in production mode:  Login to Weblogic Console In the left pane of the WebLogic Console, under Domain Structure, select the domain name.  Select Configuration > General and select the Production Mode check box.  Click Save, and then, to activate these changes, in the Change Center, click Activate Changes. Start and stop any servers that are currently running. Here are the steps to configure all servers in a domain back to development mode. Weblogic server stor...
17 comments
Read more

Swagger API document from Any WADL & Schema in Oracle SOA

Hi everyone, Hope everyone is doing well these days, Recently i started a project work over how to generate swagger API document for your any REST API, In case if you don't know what is swagger please go and check " https://swagger.io/tools/swagger-editor/ ". It's a great and easy to use tool which will help to create user friendly, human readable form API documentation with extension for generating API client in different languages with capability of testing your API from same. What is swagger editor, Design, describe, and document your API on the first open source editor fully dedicated to OpenAPI-based APIs. The Swagger Editor is great for quickly getting started with the OpenAPI (formerly known as the Swagger Specification) specification, with support for Swagger 2.0 and OpenAPI 3.0.  What benefits you will get by using swagger, Runs Anywhere, The Editor works in any development environment, be it locally or in the web. Smart Feedback, Validate you...
10 comments
Read more