I had a previous post about user defined routines with DBMS_STATS. After some more digging, I determined how this works. I have some data in my database that is stored in a User Defined Type. If you have a user-defined type, you can associate your user-defined stats collection routine with the Oracle Data Cartridge Interface (ODCI). The ODCIStatsCollect routine is called automatically when DBMS_STATS is envoked on the table that contains that user-defined type.
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