Move the st_spatial_index between tablespaces in Oracle

Summary

Instructions provided describe how to move an st_geometry attribute's spatial index to a new tablespace. Reasons that may force the movement of a spatial index to a new tablespace could be space management or resource contention between multiple segments on the same physical disk.

To move a spatial index between tablespaces, use the Oracle ALTER TABLE command in SQL*Plus.

Procedure

1. The first step is to identify the street table's unique geometry identifier. The geom_id is used as the unique identifier for the geometry and its spatial index's table name.
   
   

   Code:
   SQL> SELECT geom_id
     2  FROM sde.st_geometry_columns
     3  WHERE table_name = 'STREET'
     4  AND owner = USER;
   
      GEOM_ID
   ----------
          102

   
   
2. Next, execute the ALTER TABLE command to move the spatial index table to its new tablespace strt_idx_tbs. The name of the spatial index table to move is the combination of S<geom_id>_IDX$. After performing the move operation, a view can be queried to verify the table now exists in the new tablespace.
   
   

   Code:
   SQL> ALTER TABLE s102_idx$ MOVE TABLESPACE strt_idx_tbs;
   
   Table altered.
   
   SQL> SELECT tablespace_name
     2  FROM user_indexes
     3  WHERE index_name = 'S102$_IX1';
   
   TABLESPACE_NAME
   ------------------------------
   STRT_IDX_TBS