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SDO_GEOM.SDO_CONCAVEHULL terminates with an ORA-600 [OCI_concavehull:Wrong_Triangluation] Or ORA-7445 CORE DUMP [OCI_CONCAVEHULL()+3999] (Doc ID 1475792.1)

Last updated on DECEMBER 22, 2018

Applies to:

Oracle Spatial and Graph - Version 11.2 to 12.1.0.1
Information in this document applies to any platform.

Symptoms

A Spatial query using SDO_CONCAVEHULL raises exceptions

ORA-07445: exception encountered: core dump [OCI_concavehull()+4359] [SIGSEGV] [ADDR:0x0] [PC:0x426F951] [Address not mapped to object] []

When executing this query:

SELECT SDO_GEOM.SDO_UNION
         (SDO_GEOM.SDO_CONCAVEHULL
            ((SELECT SDO_AGGR_UNION(MDSYS.SDOAGGRTYPE(A.GEOLOC, 0.005))
                FROM TEST A),
             0.001),
          (SELECT SDO_AGGR_UNION(MDSYS.SDOAGGRTYPE(A.GEOLOC, 0.005))
             FROM TEST A),
          0.001)
  FROM DUAL;

This simplified select also breaks:

SELECT SDO_GEOM.SDO_CONCAVEHULL
(SDO_AGGR_UNION(MDSYS.SDOAGGRTYPE(A.GEOLOC, 0.05)), 0.05
) from test a;

Other times the error is ORA-600 [OCI_concavehull:Wrong_Triangluation]

This error happens even after installing patch 12957127 to an 11.2.0.2 Database version

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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