After upgrading to CAPM 3.0, when you go to the dcdebug page http://<da>:8581/dcdebug/searchdebug.jsp it produces an HTTP ERROR 404:
Problem accessing /dcdebug/searchdebug.jsp. Reason:
Not Found
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This was a change made during the development if CAPM 3.0
The following URL will only work for CAPM r2.8 and older.
http://<DAhostname>:8581/dcdebug/searchdebug.jsp
Here is the new URL that should be used for CAPM 3.0