Skip to main content

ADF : On the hunt for connection leaks

We changed our connection pool to only use connection pools in weblogic and also to swap connection pool depending on a login selection (http://dailydevfixes.blogspot.com/2011/09/using-environment-info-provider-to.html).

We are now running out of connections at a rapid rate - each task flow seems to create 2 new connections so off to weblogic console I go. (Enviroment\Servers\[YourServer]\Monitioring\JDBC).

To monitor the info I used the dashboard (dont forget to push the play button):
http://[your server]:7101/console/dashboard



Will update this thread as the hunting progresses.

Ok so my hunting ended in disappointment today - there where no connection leaks here is my scenario:
We had multiple AM's working off the same Data source. Each Application module had the value of Referenced Pool Size set to ten. Each request to a taskflow created a new application module and thus a new connection only once the Referenced Pool Size value of connections where reached did it start reusing AMs and connections.

So lessons learned and an important exercise.

Initial Info used:
http://one-size-doesnt-fit-all.blogspot.com/2011/05/jdev-11g-task-flows-adf-bc-one-root.html
http://www.orastudy.com/oradoc/selfstu/fusion/doc.1111/e15524/adv_performance.htm
http://andrejusb.blogspot.com/2010/02/optimizing-oracle-adf-application-pool.html

Comments

Popular posts from this blog

MANIFEST.MF merge JDeveloper for an executable jar

Goto your project > properties. Then click on deployment in the menu. Edit or add a jar deployment profile. Fill in the details under jar options (select Include manifest and give it a main class name) Also remember that the merge functionality only works with a BLANK line at the end of the merge file. REALLY this caught me. My merge file contents: Class-Path: commons-codec-1.3.jar [...empty line here CRLF...]

ADF: LOV Description instead of code

I keep on forgetting how to do this so this is a note to self in terms I understand (ie pictures): Add the related entiy object to yours (in the example we are adding RegionEO(list of values) to CountryEO) Now add the RegionName field from the EO and a transient attribute (I named mine RegionNameLOV) Make the transient attribute updateable and base it on the expression RegionName (the description you wish to display) Add a list of values to RegionNameLOV and map BOTH key to parent fk (region id here) AND RegionName to your transient coulmn (RegionNameLOV).  Map the transient as an Input text with List of Values. Then just drag the lov item onto the page (RegionNameLOV)

OJDeploy: Documentation for the tool

Real DOCS:  http://docs.oracle.com/cd/E26098_01/user.1112/e17455/deploying_apps.htm#OJDUG645 OJDeploy Documentation if you run it from the command line - I keep looking for this so I though I would post it here so I remeber. Oracle JDeveloper Deploy 11.1.2.1.0.6081 Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. Usage:   ojdeploy -profile <name> -workspace <jws> [ -project <name> ] [ <options> ]   ojdeploy -buildfile <ojbuild.xml> [ <options> ]   ojdeploy -buildfileschema Arguments:   -profile               the name of the Profile to deploy   -workspace      full path to the JDeveloper Workspace file(.jws)   -project              name of the JDeveloper Project within the .jws where the Profile can be...