Default: The value of the Oracle Database configuration parameter, SKIP_UNUSABLE_INDEXES, as specified in the initialization parameter file. The default database setting is TRUE.
Purpose
The SKIP_UNUSABLE_INDEXES parameter specifies whether to skip an index encountered in an Index Unusable state and continue the load operation.
Syntax and Description
SKIP_UNUSABLE_INDEXES=[TRUE | FALSE]
A value of TRUE for SKIP_UNUSABLE_INDEXES means that if an index in an Index Unusable state is encountered, it is skipped and the load operation continues. This allows SQL*Loader to load a table with indexes that are in an Unusable state prior to the beginning of the load. Indexes that are not in an Unusable state at load time will be maintained by SQL*Loader. Indexes that are in an Unusable state at load time will not be maintained but will remain in an Unusable state at load completion.
Both SQL*Loader and Oracle Database provide a SKIP_UNUSABLE_INDEXES parameter. The SQL*Loader SKIP_UNUSABLE_INDEXES parameter is specified at the SQL*Loader command line. The Oracle Database SKIP_UNUSABLE_INDEXES parameter is specified as a configuration parameter in the initialization parameter file. It is important to understand how they affect each other.
If you specify a value for SKIP_UNUSABLE_INDEXES at the SQL*Loader command line, then it overrides the value of the SKIP_UNUSABLE_INDEXES configuration parameter in the initialization parameter file.
If you do not specify a value for SKIP_UNUSABLE_INDEXES at the SQL*Loader command line, then SQL*Loader uses the Oracle Database setting for the SKIP_UNUSABLE_INDEXES configuration parameter, as specified in the initialization parameter file. If the initialization parameter file does not specify a setting for SKIP_UNUSABLE_INDEXES, then the default setting is TRUE.
The SKIP_UNUSABLE_INDEXES parameter applies to both conventional and direct path loads.
Restrictions
Indexes that are unique and marked Unusable are not allowed to skip index maintenance. This rule is enforced by DML operations, and enforced by the direct path load to be consistent with DML.
Example
If the Oracle Database initialization parameter had a value of SKIP_UNUSABLE_INDEXES=FALSE, then the following parameter on the SQL*Loader command line would override it. Therefore, if an index in an Index Unusable state is encountered, it is skipped and the load operation continues.
SKIP_UNUSABLE_INDEXES=TRUE