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Anlayze Table Command
- Thread starter amolso
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The difference is what you might expect based on the syntax of the command. "Estimate statistics" generates table statistics based on a subset of the table rows. "Compute statistics" looks at all the rows. Estimate is faster but less accurate. [sig][/sig]
Depending on what level of Oracle you are using and whether you have row chaining, you may want to use 'compute statistics'. I have recently had errors occur both on 8.0.5.1 and 8.1.5.0 for large tables (over 15 million rows) and small tables with chained rows. The 'estimate statistics' gives a trace file and ends the 'analyze' command but the 'compute statistics' works. It is always better to do the 'compute' anyway, if you have the window.
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