OPTIMIZER_USE_INVISIBLE_INDEXES

Property	Description
Parameter type	Boolean
Default value	false
Modifiable	ALTER SESSION, ALTER SYSTEM
Range of values	true | false
Basic	No

OPTIMIZER_USE_INVISIBLE_INDEXES enables or disables the use of invisible indexes.

Values:

· true

Invisible indexes are treated as visible (normal) indexes.

· false

Invisible indexes will not be considered by the optimizer but will still be maintained by DML operations.

Note:

1. This parameter was introduced in 11g.

2. Query for the current value of the parameter

select name, value, isdefault, isses_modifiable, issys_modifiable,

isinstance_modifiable, isdeprecated, description

from v$parameter

where upper(name) = ‘OPTIMIZER_USE_INVISIBLE_INDEXES’;

Oracle initializatoin parameters