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Optimizer Does not use Spatial Domain Index for SQL When NLS_comp=linguistic, NLS_sort=binary_ci (Doc ID 1617278.1)

Last updated on JANUARY 26, 2014

Applies to:

Oracle Spatial and Graph - Version 11.2.0.3 and later
Information in this document applies to any platform.

Symptoms

 A table with column having type MDSYS.SDO_GEOMETRY

The problem is the spatial index usage by Optimizer:
1. Index was created in a session with NLS_comp=linguistic and NLS_sort=binary_ci
2. Query from session with NLS_comp=linguistic and NLS_sort=binary_ci uses full table scan
3. Query from session with standard  NLS_comp=binary and NLS_sort=binary uses domain index

Cause

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