When Oracle join a b-tree and a bitmap index
and bitmap conversion is occured.
there is from_rowid to join bitmaps,
and to_rowid to get the data from the table.
how does this from and to rowid going on?
how much does it cost? (building bitmap from rowid sounds costly)
do you have a link to a white paper on that subject?
Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface. I made a script to download the Alert Log, look for errors, and email me the trace files. In this article I'll describe what I did and share my script.
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