I just rebuilt an index with 35 million rows in it. Do I have to analyze the index after rebuild?

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When you rebuild an index you have the option to compute statistics at the time of your command, so the basic answer is yes, you may need to compute statistics on the new index. With Oracle 10g and later versions, Oracle will compute indexes' statistics on rebuild and creation. However, if you want, you can always include the COMPUTE STATISTICS. It will not cause an error, but I would suggest you remove it from any 10g+ statements.

This was first published in January 2008

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