3 Replies Latest reply on Feb 7, 2012 3:49 PM by JorgeB-Oracle

    Semantics Parameter

    889820
      Dear All,

      Can you plz provide me parameter for Oracle Semantics.

      Regards,
      Indu
        • 1. Re: Semantics Parameter
          JorgeB-Oracle
          Hi Indu,

          I am not sure what you referred to by "parameter for Oracle Semantics".

          Here is a link to the quick start on Oracle Semantics from the Oracle Documentation

          http://docs.oracle.com/cd/E11882_01/appdev.112/e25609/sdo_rdf_concepts.htm#CHDEDFFA
          1.10 Quick Start for Using Semantic Data

          Hope this helps, let me know if you have further questions
          Regards!
          Jorge
          • 2. Re: Semantics Parameter
            889820
            Hi Jorge,

            Thanks for the URL.

            I need to improve Semantics Performance, Which parameters can be added to the init.ora file.


            Thanks,
            Indu
            • 3. Re: Semantics Parameter
              JorgeB-Oracle
              1. There are no init ora parameters specific to Oracle Semantics

              You may want to review your memory parameters

              SGA_TARGET
              PGA_TARGET


              2. And gathers statistics about RDF and OWL tables and their indexes.

              conn / as sysdba
              SQL> sem_perf.gather_stats(false, 4);

              3. Review the SEM_MATCH chapter for the use of hints

              http://docs.oracle.com/cd/E11882_01/appdev.112/e25609/sdo_rdf_concepts.htm#CHDJACII
              1.6 Using the SEM_MATCH Table Function to Query Semantic Data

              If you have a specific query with performance problems you can paste the query here

              Regards!
              Jorge