BITMAP CONVERSION TO ROWID
Short Description
This step is typically found where bitmap indexes are used, or large data sets are joined.
Detailed Description​
This step is required when either bitmap indexes are used, or an earlier step has resulted in a temporary hash table for joining. Conversion of the BITMAP to ROWIDs allows the table access to take place and access the row data.
Further Reading​
- Oracle Magazine - How to read an execution plan
- Oracle Tuning Guide - Explaining and Displaying Execution Plans
- Oracle Tuning Guide - Comparing Execution Plans Tutorial
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