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Oracle Performance Maintenance Point

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Maintenance principle of Big data scale

1. If this table is often crud, the best way is to regularly collect statistics to pass to the Oracle optimizer for improved performance. For example, the Dbms_stats.gather_table_stats command.

Can be done in ETL, regular execution.

2. Consider using a business characters commonly used segment for partitioning, such as time or geography. To improve the efficiency of table queries.

View Creation Principles

1. It is absolutely forbidden to create views on the basis of views, why does this affect performance?

2. MV is recommended, but not too high in refresh rate

Oracle Performance Maintenance Point

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