Options for Index Organized Tables

Tablespace
Define a tablespace different from the default tablespace to create a table.

Logging
Specify whether creation of a database object will be logged in the redo log file (LOGGING) or not (NOLOGGING).

Parallel With Degree
Specify the degree of parallelism, which is the number of parallel threads used in the parallel operation.

Row Movement
With the option on, it allows the database to move a table row. It is possible for a row to move, for example, during table compression or an update operation on partitioned data.

Physical Attributes
Refer to Editing Physical Attributes/Default Storage Characteristics.

IOT Properties

Key Compress
Check this option to enable key compression. Upon necessary, you can also specify the prefix length (as the number of key columns), which identifies how the key columns are broken into a prefix and suffix entry.

Mapping Table
Specify if there is a mapping table for the index-organized table. Note that a mapping table is required for creating bitmap indexes on an index-organized table.

% Threshold
When an overflow segment is being used, it defines the maximum size of the portion of the row that is stored in the index block, as a percentage of block size.

Overflow Properties
Check to enable an overflow storage area.

Note: After saving the table, this option cannot be unchecked.

Overflow Column
Specify the column to be put in a separate overflow data segment.

Overflow Tablespace
Specify the tablespace in which the overflow segment to be stored.

Overflow Logging
Specify whether creation of a database object will be logged in the redo log file (LOGGING) or not (NOLOGGING).

Overflow Physical Attributes
Refer to Editing Physical Attributes/Default Storage Characteristics.