Rechercher dans une base oracle un nombre (Search_Valeur), il est possible de filtrer les colonnes en renseignant Search_Colonne.

/* VERSION VALEUR NUMERIQUE */
SET SERVER OUTPUT ON
SET SERVEROUTPUT ON
DECLARE
TYPE curtype
IS
  REF
  CURSOR;
    Curseur_Table curtype;
    Curseur_Colonne curtype;
    Curseur_Search curtype;
    Counter              NUMBER:=0;
    RequeteSQL_Colonne   VARCHAR2(200);
    RequeteSQL_Table     VARCHAR2(500);
    RequeteSQL_Searching VARCHAR2(2048);
    Search_Table         VARCHAR (100):= '';
    Search_Colonne       VARCHAR (100):= '';

    Nom_Table            VARCHAR (200);
    Nom_Colonne          VARCHAR2(200);
    Search_Valeur        VARCHAR (200):='126980';
  BEGIN
    RequeteSQL_Table:='SELECT TABLE_NAME FROM USER_TABLES WHERE TABLE_NAME LIKE ''%'||Search_Table||'%''';
    -- dbms_output.put_line(RequeteSQL_Table);
    OPEN Curseur_Table FOR RequeteSQL_Table;
    LOOP
      FETCH Curseur_Table INTO Nom_Table;
    EXIT
  WHEN Curseur_Table%notfound;
    RequeteSQL_Colonne:='SELECT COLUMN_NAME FROM USER_TAB_COLUMNS WHERE TABLE_NAME='''||Nom_Table||''' AND DATA_TYPE IN (''NUMBER'') AND COLUMN_NAME LIKE ''%'|| Search_Colonne ||'%''';
    -- dbms_output.put_line(RequeteSQL_Colonne);
    OPEN Curseur_Colonne FOR RequeteSQL_Colonne;
    LOOP
      FETCH Curseur_Colonne INTO Nom_Colonne;
      EXIT
    WHEN Curseur_Colonne%notfound;
      RequeteSQL_Searching :='SELECT count(*) FROM "'||Nom_Table||'" WHERE "'||Nom_Colonne||'"=' || Search_Valeur;
      -- dbms_output.put_line(RequeteSQL_Searching);
      EXECUTE IMMEDIATE RequeteSQL_Searching INTO Counter;
      IF Counter > 0 THEN
        dbms_output.put_line(''|| Search_Valeur ||' trouvé '||Counter || ' fois dans "'|| Nom_Table ||'"."'|| Nom_Colonne ||'" SELECT * FROM ' || Nom_Table || ' WHERE ' || Nom_Colonne || ' = ' || Search_Valeur || ';' );
      END IF;
    END LOOP;
    CLOSE Curseur_Colonne;
  END LOOP;
  CLOSE Curseur_Table;
END;

Rechercher dans une base oracle une chaine (Search_String), il est possible de filtrer les colonnes en renseignant Search_Colonne.

/* VERSION CHAINE DE CARACTERES */
SET SERVEROUTPUT ON
SET SERVER OUTPUT ON
DECLARE
TYPE curtype
IS
  REF
  CURSOR;
    Curseur_Table curtype;
    Curseur_Colonne curtype;
    Curseur_Search curtype;
    Counter              NUMBER:=0;
    RequeteSQL_Colonne   VARCHAR2(200);
    RequeteSQL_Table     VARCHAR2(500);
    RequeteSQL_Searching VARCHAR2(2048);
    Search_String        VARCHAR (100) := '' ;
    Search_Table         VARCHAR (100) := '' ;
    Nom_Table            VARCHAR (200) ;
    Nom_Colonne          VARCHAR2(200);
  BEGIN
    RequeteSQL_Table:='SELECT TABLE_NAME FROM USER_TABLES WHERE TABLE_NAME LIKE ''%'||Search_Table||'%''';
    --    dbms_output.put_line(RequeteSQL_Table);
    OPEN Curseur_Table FOR RequeteSQL_Table;
    LOOP
      FETCH Curseur_Table INTO Nom_Table;
    EXIT
  WHEN Curseur_Table%notfound;
    RequeteSQL_Colonne:='SELECT COLUMN_NAME FROM USER_TAB_COLUMNS WHERE TABLE_NAME='''||Nom_Table||''' AND DATA_TYPE IN (''VARCHAR2'',''NVARCHAR2'')';
    -- dbms_output.put_line(RequeteSQL_Colonne);
    OPEN Curseur_Colonne FOR RequeteSQL_Colonne;
    LOOP
      FETCH Curseur_Colonne INTO Nom_Colonne;
      EXIT
    WHEN Curseur_Colonne%notfound;
      RequeteSQL_Searching :='SELECT count(*) FROM "'||Nom_Table||'" WHERE "'||Nom_Colonne||'" LIKE ''%'||Search_String||'%''';
      -- dbms_output.put_line(RequeteSQL_Searching);
      EXECUTE IMMEDIATE RequeteSQL_Searching INTO Counter;
      IF Counter > 0 THEN
        dbms_output.put_line(''''||Search_String ||''' trouvé '||Counter || ' fois dans "'|| Nom_Table ||'"."'|| Nom_Colonne ||'"');
      END IF;
    END LOOP;
    CLOSE Curseur_Colonne;
  END LOOP;
  CLOSE Curseur_Table;
END;