||Oracle Tips by Burleson
Chapter 7 Oracle Storage and Object
Owner Cluster Tablespace Key Type Function
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SYS C_COBJ# SYSTEM INDEX
Monitoring Cluster Hash Expressions
Hash expressions can be specified for a hash
cluster beginning with the later versions of Oracle7. These hash
expressions can be viewed for a specific cluster by querying the
dba_cluster_hash_expression view. The dba_cluster_hash_expression
view has three columns: owner, cluster_name, and hash_expression.
When querying hash_expression, allow for extra-length character
strings by using the word_wrapped parameter on a COLUMN command,
since hash_expression is a LONG.
Later in this chapter, you will learn how to
monitor DIMENSIONS, a new Oracle8i feature used with materialized
views to provide query rewrite.
Monitoring LOB Storage
In Oracle8 and all
subsequent releases Oracle provides the capability to use large
objects (LOBs). These LOBs can be of type BLOB, CLOB or NCLOB
(binary, character or National Character) and can either be stored
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