Oracle | DBMS_MACSEC

Oracle DBMS_MACSEC_FUNCTION Version 21c

General Information

Library Note

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Purpose Contains functions that retrieve factor identities. After Oracle Database Vault installation, the install process locks the DVF account to enhance security.

When creating a new factor, Database Vault creates a new retrieval function for the factor owned by the DVF schema.

AUTHID DEFINER

Dependencies

DBMS_ASSERT

DBMS_UTILITY

Documented Yes

First Available Not Known

Security Model Owned by DVF with EXECUTE granted to DVSYS

Source {ORACLE_HOME}/rdbms/admin/dvmacfunc.plb

Subprograms

CREATE_FACTOR_FUNCTION

DROP_FACTOR_FUNCTION

TO_ORACLE_IDENTIFIER

CREATE_FACTOR_FUNCTION

Create retrieval function dbms_macsec_function.create_factor_function(p_factor IN VARCHAR2);

SQL> exec dvf.dbms_macsec_function.create_factor_function('ZZYZX');

      

      PL/SQL procedure successfully completed.

The demo, at right, is from $ORACLE_HOME/rdbms/admin/catmact.sql reformatted for readability since no one has taught developers at Oracle how to format their code. dbms_macsec_function.create_factor_function(p_factor IN VARCHAR2);

BEGIN

        FOR c99 IN (SELECT id# , name, get_expr FROM dvsys.factor$) LOOP

          l_exp := c99.get_expr;

          l_name := c99.name;

      

          BEGIN

            -- if invalid factor name, then no need to create the factor function

            IF (LENGTH(l_name) > 126) THEN

              dvsys.dbms_macutl.raise_error(47951,'factor_name');

            END IF;

      

            sys.dbms_utility.canonicalize(

              sys.dbms_assert.simple_sql_name(

                dvsys.dbms_macutl.to_oracle_identifier(l_name)), l_canon_name, 126);

            IF (LENGTH(l_canon_name) > 126) THEN

              dvsys.dbms_macutl.raise_error(47951, 'factor_name');

            END IF;

      

            dvf.dbms_macsec_function.create_factor_function(l_name);

          EXCEPTION

            WHEN OTHERS THEN

              sys.dbms_output.put_line('sddvffnc: factor='||l_name||',error='||sqlerrm);

          END;

        END LOOP;

      END;

      /

DROP_FACTOR_FUNCTION

Drop a retrieval function.

The demo, at right, is from $ORACLE_HOME/rdbms/admin/dve12.sql dbms_macsec_function.drop_factor_function(p_factor IN VARCHAR2);

execute dvf.dbms_macsec_function.drop_factor_function('DV$_Module');

      execute dvf.dbms_macsec_function.drop_factor_function('DV$_Client_Identifier');

      execute dvf.dbms_macsec_function.drop_factor_function('DV$_Dblink_Info');

TO_ORACLE_IDENTIFIER

Converts the input string into a valid Oracle object name

Note in the demo, at right, a space in the string is converted to an underscore dbms_macsec_function.to_oracle_identifier(str IN VARCHAR2) RETURN VARCHAR2;

SELECT dvf.dbms_macsec_function.to_oracle_identifier('ZZ ZZ')

      FROM dual;

      

      DVF.DBMS_MACSEC_FUNCTION.TO_ORACLE_IDENTIFIER('ZZZZ')

      -----------------------------------------------------

      ZZ_ZZ