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19 Managing Hash Clusters
When to Use Hash Clusters ............................................................................................................ 19-2
Situations Where Hashing Is Useful........................................................................................ 19-3
Situations Where Hashing Is Not Advantageous.................................................................. 19-3
Creating Hash Clusters.................................................................................................................... 19-4
Creating Single-Table Hash Clusters....................................................................................... 19-5
Controlling Space Use Within a Hash Cluster....................................................................... 19-5
Estimating Size Required by Hash Clusters........................................................................... 19-8
Altering Hash Clusters .................................................................................................................... 19-9
Dropping Hash Clusters.................................................................................................................. 19-9
Viewing Information About Hash Clusters ................................................................................ 19-9
20 Managing Views, Sequences, and Synonyms
Managing Views ............................................................................................................................... 20-2
Creating Views............................................................................................................................ 20-2
Updating a Join View................................................................................................................. 20-5
Altering Views .......................................................................................................................... 20-10
Dropping Views........................................................................................................................ 20-10
Replacing Views ....................................................................................................................... 20-10
Managing Sequences ..................................................................................................................... 20-11
Creating Sequences .................................................................................................................. 20-12
Altering Sequences................................................................................................................... 20-13
Dropping Sequences ................................................................................................................ 20-13
Managing Synonyms ..................................................................................................................... 20-13
Creating Synonyms.................................................................................................................. 20-14
Dropping Synonyms................................................................................................................ 20-14
Viewing Information About Views, Synonyms, and Sequences.......................................... 20-15
21 General Management of Schema Objects
Creating Multiple Tables and Views in a Single Operation.................................................... 21-2
Renaming Schema Objects............................................................................................................. 21-3
Analyzing Tables, Indexes, and Clusters ..................................................................................... 21-3
Collecting Statistics for Tables, Indexes, and Clusters.......................................................... 21-4
Validating Tables, Indexes, Clusters, and Materialized Views ........................................... 21-6