Oracle
1Z0-043 · Question #152
1Z0-043 Question #152: Real Exam Question with Answer & Explanation
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Question
In your test database, you have created the ORDERS table as an index-organized table (IOT). To facilitate faster querying, you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrees when users perform a large volume of transactions. While investigating the reason, you find that the mapping table segment is fragmented, leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data?
Options
- AExport and import the mapping table.
- BDrop and re-create the mapping table.
- CTruncate the mapping table and reinsert the values.
- DUse the ALTER TABLE ..REBUILD command to defragment the mapping table.
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