Using Oracle Application Manager Workflow User Interface optimally for Mass re-trying ERRORed Activities..
After hitting some system wide exceptions or improper workflow background concurrent process improper termination, we may need to mass retry several different kind of workflow item types. The Oracle Application Manager UI provides a lot of possibilities into executing mass Retry and Purge actions on different kind of workflow items. Lets talk about a lesser known method of mass retrying ERROR'ed workflow items.
After clicking on Workflow Administrator Web Applications responsbility, click on "Workflow" menu item. Click on "Site Map" tab to get the following screen:

Click on the "Work Item Metrics" link under Workflow heading:

Click on Work Items under the Throughput category at the bottom right
By default, you get this screen which shows all COMPLETED status workflow items:

Select the drop down box on the top right corner to show Errored Activities:

Select a particular kind of Activity which needs to be re-tried:

Now that ALL the errored items for a particular workflow Activity are listed, you can click on the Retry All button at the top of the output to do a mass re-try of them:
Alternately, you can also do an Abort All action on these items.

