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Chapter 8 Oracle Index Internal Scripting

Monitoring Indexes

The bitmapped index was added in Oracle7.3.2. Indexes were expanded to include partitions in Oracle8, in addition to the old monitoring requirements. In Oracle8i, partitioning was further expanded to include sub-partitions and the additional functionality of function-based indexes, as well as indextypes. Oracle8i also added support for descending indexes. To those capabilities, Oracle9i added the bitmap join index and the skip scan index.

The DBA still needs to monitor table indexes to verify uniqueness, determine if the appropriate columns have been indexed, and determine proper ownership of indexes for a given application in Oracle9i. The DBA also needs a convenient reference to show which tables have indexes, as well as what is indexed, in case of the loss of a table or for use during table maintenance. The diagram in Figure 8.1 shows the cluster of dba_ views that are needed for monitoring indexes.


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