Friday, February 17, 2012

Oracle WebCenter 11g and ConcurrentModificationException

I came accross recently a very weird issue on Oracle WebCenter 11g PS4 (

I had a page, with four portlets. One of them had a portlet parameter. When I tried to provide a value for that portlet parameter at runtime (using the WebCenter Administrator), i got a ConcurrentModificationException exception. Here is a snippet from the log file:

at java.util.LinkedList$ListItr.checkForComodification(
at java.util.LinkedList$
at oracle.portlet.client.containerimpl.event.EventManagerImpl.fireEvent(

After loggin an SR, this is a known issue and Oracle has a fix for it (patch 10427778).

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