Problem with a indexes that doesn't run

Hi all,
I premise that I'm not a Dba Administrator, but I must resolve a performance problem in a complex select.
I hope to explain it, but If you need others information about it, I can give all!
I read a Rob thread about the explain plan and tkprof.
1) The statment is this (I show only a field extracted, but are much more)
explain plan for
select case                           
  when a.codi_prov = b.codi_prov then 1            
  when a.codi_prov != b.codi_prov                  
  and a.codi_regi = b.codi_regi then 2            
  else 3 end ordine            
  ,codi_azie
  from V_Boll0003 a    
  , ( select c.codi_prov
     , c.codi_regi          
     from AnagIndiAzie b              ,
     ParaProv     c          
     where b.codi_prov = c.codi_prov            
     and b.codi_azie = 11
     and codi_tipo_indi = 9 ) b
  where a.codi_boll_avvi = 1181
  and codi_azie = 11
order by codi_azie, ordine, nume_ordi, nvl(substr(nume_avvi_coll,2),substr(nume_avvi,2)),substr(nume_avvi,2)where the V_Boll0003 is this
select  d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B') Desc_Deno_AVVI_Coll,
              EstrDatiAvvi(codi_Avvi_Coll,'I') Desc_Deno_Ente_Coll
         from V_Asp_RepoAnagBollAvvi a,
              RelaAvviProv           b,
              RelaAvviDettCate       c,
              GestAzieInte           d
        where a.codi_avvi      = b.codi_avvi(+)
          and a.codi_avvi      = c.codi_avvi(+)
          and b.codi_prov      = d.codi_prov
          and c.codi_dett_cate = d.codi_dett_cate(+)
          and a.flag_risu      not in ('R')
          and (
                    a.impo_avvi >= d.impo_mini
                 and a.impo_avvi <= d.impo_maxx
                or a.impo_avvi = 0
     group by d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B'),
              EstrDatiAvvi(codi_Avvi_Coll,'I')
        union
      select  d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B') Desc_Deno_AVVI_Coll,
              EstrDatiAvvi(codi_Avvi_Coll,'I') Desc_Deno_Ente_Coll
          from V_Asp_RepoAnagBollAvvi a,
              RelaAvviProv           b,
              RelaAvviDettCate       c,
              GestAzieInte           d
        where a.codi_avvi_coll = b.codi_avvi(+)
          and a.codi_avvi_coll = c.codi_avvi(+)
          and b.codi_prov      = d.codi_prov
          and c.codi_dett_cate = d.codi_dett_cate(+)
          and a.flag_risu      not in ('R')
          and (
                    a.impo_avvi >= d.impo_mini
                 and a.impo_avvi <= d.impo_maxx
                or a.impo_avvi = 0
     group by d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B'),
              EstrDatiAvvi(codi_Avvi_Coll,'I')
        union
      select  d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B') Desc_Deno_AVVI_Coll,
              EstrDatiAvvi(codi_Avvi_Coll,'I') Desc_Deno_Ente_Coll
         from V_Asp_RepoAnagBollAvvi a,
              RelaAvviProv           b,
              GestAzieInte           d
        where a.codi_avvi      = b.codi_avvi
          and b.codi_prov      = d.codi_prov
          and a.flag_risu      not in ('R')
          and flag_glob = 'P'
     group by d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B'),
              EstrDatiAvvi(codi_Avvi_Coll,'I')
        union
      select  d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B') Desc_Deno_AVVI_Coll,
              EstrDatiAvvi(codi_Avvi_Coll,'I') Desc_Deno_Ente_Coll
         from V_Asp_RepoAnagBollAvvi a,
              RelaAvviProv           b,
              RelaAvviDettCate       c,
              GestAzieInte           d
        where a.codi_avvi_coll = b.codi_avvi(+)
          and a.codi_avvi      = c.codi_avvi(+)
          and b.codi_prov      = d.codi_prov
          and c.codi_dett_cate = d.codi_dett_cate(+)
          and a.flag_risu  not in ('R')
          and (
                    a.impo_avvi >= d.impo_mini
                 and a.impo_avvi <= d.impo_maxx
                or a.impo_avvi = 0
     group by d.codi_Azie        , a.codi_prov     , a.codi_regi        , nume_ordi          , nume_Avvi     ,
              a.nume_avvi_coll   , desc_deno_ente  , a.CODI_SIGL_PROV   , desc_indi_visu     ,
              desc_caap          , Desc_Comu       , desc_nume_tele02   , desc_nume_tele01   ,
              desc_nume_faxx02   , desc_nume_faxx01, desc_tipo_avvi_visu, flag_avvi_urge     , desc_ogge_lavo ,
              Flag_Cate_Stim     , Note_stim       , Impo_Avvi_Visu     , Desc_note_Impo     , Desc_Fina_0001 ,
              Desc_Arti_Legg_Boll, Data_Publ       , Data_Scad_Visu     , desc_scad_oraa     , desc_scad_minu ,
              Desc_Note_Ente_Visu, a.codi_avvi     , a.codi_boll_avvi   ,
              desc_uffi_ente     , desc_fina_0002  , desc_ogge_lavo_visu,
              desc_deno_ente_visu, EstrDatiAvvi(codi_Avvi_Coll,'B'),
              EstrDatiAvvi(codi_Avvi_Coll,'I')and the table that doesn't run the index, is RelaAvviProv,
CODI_AVVI_PROV                            NOT NULL NUMBER(9)
CODI_AVVI                                 NOT NULL NUMBER(9)
CODI_PROV                                 NOT NULL VARCHAR2(3)
USER_PROP                                 NOT NULL VARCHAR2(30)
USER_PROC                                 NOT NULL VARCHAR2(30)
DATA_AGGI                                 NOT NULL DATE
DATA_INSE                                 NOT NULL DATENow
2) Explain plan is this
PLAN_TABLE_OUTPUT                                                              
Plan hash value: 1133346799                                                    
| Id  | Operation                                      | Name                  
      | Rows  | Bytes |TempSpc| Cost (%CPU)| Time     |                        
PLAN_TABLE_OUTPUT                                                              
|   0 | SELECT STATEMENT                               |                       
      |   277 | 22160 |       |  6061   (2)| 00:01:13 |                        
|   1 |  SORT ORDER BY                                 |                       
      |   277 | 22160 |       |  6061   (2)| 00:01:13 |                        
|   2 |   MERGE JOIN CARTESIAN                         |                       
      |   277 | 22160 |       |  6060   (2)| 00:01:13 |                        
|   3 |    NESTED LOOPS                                |                       
      |     1 |    20 |       |    29   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|*  4 |     TABLE ACCESS BY INDEX ROWID                | ANAGINDIAZIE          
      |     1 |    12 |       |    28   (0)| 00:00:01 |                        
|*  5 |      INDEX RANGE SCAN                          | INDX_ANAGINDIAZIE_TIPOI
NDI   |  1726 |       |       |     4   (0)| 00:00:01 |                        
|   6 |     TABLE ACCESS BY INDEX ROWID                | PARAPROV              
      |     1 |     8 |       |     1   (0)| 00:00:01 |                        
|*  7 |      INDEX UNIQUE SCAN                         | PK_CODIPROV           
PLAN_TABLE_OUTPUT                                                              
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|   8 |    BUFFER SORT                                 |                       
      |  3952 |   231K|       |  6060   (2)| 00:01:13 |                        
|   9 |     VIEW                                       | V_BOLL0003            
      |  3952 |   231K|       |  6031   (2)| 00:01:13 |                        
|  10 |      SORT UNIQUE                               |                       
      |  3952 |  2316K|  4840K|  6031  (77)| 00:01:13 |                        
PLAN_TABLE_OUTPUT                                                              
|  11 |       UNION-ALL                                |                       
      |       |       |       |            |          |                        
|  12 |        HASH GROUP BY                           |                       
      |    11 |  6809 |       |  1414   (2)| 00:00:17 |                        
|  13 |         NESTED LOOPS OUTER                     |                       
      |    11 |  6809 |       |  1412   (2)| 00:00:17 |                        
|  14 |          NESTED LOOPS OUTER                    |                       
      |    11 |  6578 |       |  1401   (2)| 00:00:17 |                        
PLAN_TABLE_OUTPUT                                                              
|  15 |           NESTED LOOPS                         |                       
      |    11 |  6413 |       |  1400   (2)| 00:00:17 |                        
|  16 |            NESTED LOOPS                        |                       
      |    11 |  4895 |       |  1389   (2)| 00:00:17 |                        
|* 17 |             HASH JOIN                          |                       
      |   451 |   186K|       |  1156   (2)| 00:00:14 |                        
|  18 |              NESTED LOOPS                      |                       
PLAN_TABLE_OUTPUT                                                              
      |   304 |   123K|       |   710   (1)| 00:00:09 |                        
|* 19 |               HASH JOIN RIGHT OUTER            |                       
      |   174 | 70644 |       |   187   (1)| 00:00:03 |                        
|  20 |                TABLE ACCESS FULL               | ANAGUFFIENTI          
      |   963 | 30816 |       |     5   (0)| 00:00:01 |                        
|  21 |                NESTED LOOPS OUTER              |                       
      |   174 | 65076 |       |   182   (1)| 00:00:03 |                        
PLAN_TABLE_OUTPUT                                                              
|  22 |                 NESTED LOOPS OUTER             |                       
      |   174 | 59682 |       |   181   (1)| 00:00:03 |                        
|  23 |                  NESTED LOOPS OUTER            |                       
      |   174 | 55506 |       |   180   (1)| 00:00:03 |                        
|  24 |                   NESTED LOOPS OUTER           |                       
      |   174 | 51330 |       |   179   (1)| 00:00:03 |                        
|  25 |                    NESTED LOOPS                |                       
      |   174 | 47676 |       |   177   (0)| 00:00:03 |                        
PLAN_TABLE_OUTPUT                                                              
|* 26 |                     INDEX RANGE SCAN           | UQ_RELAAVVIBOLL_BOLLAVV
I     |   174 |  1566 |       |     3   (0)| 00:00:01 |                        
|* 27 |                     TABLE ACCESS BY INDEX ROWID| ANAGAVVI              
      |     1 |   265 |       |     1   (0)| 00:00:01 |                        
|* 28 |                      INDEX UNIQUE SCAN         | PK_ANAGAVVI_CODIAVVI  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  29 |                    TABLE ACCESS BY INDEX ROWID | PARATIPOAVVI          
PLAN_TABLE_OUTPUT                                                              
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
|* 30 |                     INDEX UNIQUE SCAN          | PK_PARATIPOAVVI_CODITIP
O     |     1 |       |       |     0   (0)| 00:00:01 |                        
|  31 |                   TABLE ACCESS BY INDEX ROWID  | PARAFINA              
      |     1 |    24 |       |     1   (0)| 00:00:01 |                        
|* 32 |                    INDEX UNIQUE SCAN           | PK_PARAFINA_CODIFINA  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|  33 |                  TABLE ACCESS BY INDEX ROWID   | PARAFINA              
      |     1 |    24 |       |     1   (0)| 00:00:01 |                        
|* 34 |                   INDEX UNIQUE SCAN            | PK_PARAFINA_CODIFINA  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  35 |                 TABLE ACCESS BY INDEX ROWID    | PARALEGG              
      |     1 |    31 |       |     1   (0)| 00:00:01 |                        
|* 36 |                  INDEX UNIQUE SCAN             | PK_PARALEGG_CODILEGG  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|  37 |               TABLE ACCESS BY INDEX ROWID      | RELAAVVIDETTCATE      
      |     2 |    18 |       |     3   (0)| 00:00:01 |                        
|* 38 |                INDEX RANGE SCAN                | IDX_RELAAVVIDETTCATE  
      |     2 |       |       |     2   (0)| 00:00:01 |                        
|  39 |              TABLE ACCESS FULL                 | RELAAVVIPROV          
      |   308K|  2713K|       |   440   (3)| 00:00:06 |                        
|* 40 |             TABLE ACCESS BY INDEX ROWID        | GESTAZIEINTE          
PLAN_TABLE_OUTPUT                                                              
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
|* 41 |              INDEX UNIQUE SCAN                 | UQ_GESTAZIEINTE_AZIEPRO
VCATE |     1 |       |       |     0   (0)| 00:00:01 |                        
|  42 |            TABLE ACCESS BY INDEX ROWID         | ANAGENTI              
      |     1 |   138 |       |     1   (0)| 00:00:01 |                        
|* 43 |             INDEX UNIQUE SCAN                  | PK_ANAGENTI_CODIENTE  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|  44 |           TABLE ACCESS BY INDEX ROWID          | PARAPROV              
      |     1 |    15 |       |     1   (0)| 00:00:01 |                        
|* 45 |            INDEX UNIQUE SCAN                   | PK_CODIPROV           
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  46 |          TABLE ACCESS BY INDEX ROWID           | PARACOMU              
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
|* 47 |           INDEX UNIQUE SCAN                    | PK_CODIPROVCOMU       
      |     1 |       |       |     0   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|  48 |        HASH GROUP BY                           |                       
      |    11 |  6809 |       |  1414   (2)| 00:00:17 |                        
|  49 |         NESTED LOOPS OUTER                     |                       
      |    11 |  6809 |       |  1412   (2)| 00:00:17 |                        
|  50 |          NESTED LOOPS OUTER                    |                       
      |    11 |  6578 |       |  1401   (2)| 00:00:17 |                        
|  51 |           NESTED LOOPS                         |                       
PLAN_TABLE_OUTPUT                                                              
      |    11 |  6413 |       |  1400   (2)| 00:00:17 |                        
|  52 |            NESTED LOOPS                        |                       
      |    11 |  4895 |       |  1389   (2)| 00:00:17 |                        
|* 53 |             HASH JOIN                          |                       
      |   451 |   186K|       |  1156   (2)| 00:00:14 |                        
|  54 |              NESTED LOOPS                      |                       
      |   304 |   123K|       |   710   (1)| 00:00:09 |                        
PLAN_TABLE_OUTPUT                                                              
|* 55 |               HASH JOIN RIGHT OUTER            |                       
      |   174 | 70644 |       |   187   (1)| 00:00:03 |                        
|  56 |                TABLE ACCESS FULL               | ANAGUFFIENTI          
      |   963 | 30816 |       |     5   (0)| 00:00:01 |                        
|  57 |                NESTED LOOPS OUTER              |                       
      |   174 | 65076 |       |   182   (1)| 00:00:03 |                        
|  58 |                 NESTED LOOPS OUTER             |                       
      |   174 | 59682 |       |   181   (1)| 00:00:03 |                        
PLAN_TABLE_OUTPUT                                                              
|  59 |                  NESTED LOOPS OUTER            |                       
      |   174 | 55506 |       |   180   (1)| 00:00:03 |                        
|  60 |                   NESTED LOOPS OUTER           |                       
      |   174 | 51330 |       |   179   (1)| 00:00:03 |                        
|  61 |                    NESTED LOOPS                |                       
      |   174 | 47676 |       |   177   (0)| 00:00:03 |                        
|* 62 |                     INDEX RANGE SCAN           | UQ_RELAAVVIBOLL_BOLLAVV
PLAN_TABLE_OUTPUT                                                              
I     |   174 |  1566 |       |     3   (0)| 00:00:01 |                        
|* 63 |                     TABLE ACCESS BY INDEX ROWID| ANAGAVVI              
      |     1 |   265 |       |     1   (0)| 00:00:01 |                        
|* 64 |                      INDEX UNIQUE SCAN         | PK_ANAGAVVI_CODIAVVI  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  65 |                    TABLE ACCESS BY INDEX ROWID | PARATIPOAVVI          
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|* 66 |                     INDEX UNIQUE SCAN          | PK_PARATIPOAVVI_CODITIP
O     |     1 |       |       |     0   (0)| 00:00:01 |                        
|  67 |                   TABLE ACCESS BY INDEX ROWID  | PARAFINA              
      |     1 |    24 |       |     1   (0)| 00:00:01 |                        
|* 68 |                    INDEX UNIQUE SCAN           | PK_PARAFINA_CODIFINA  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  69 |                  TABLE ACCESS BY INDEX ROWID   | PARAFINA              
      |     1 |    24 |       |     1   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|* 70 |                   INDEX UNIQUE SCAN            | PK_PARAFINA_CODIFINA  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  71 |                 TABLE ACCESS BY INDEX ROWID    | PARALEGG              
      |     1 |    31 |       |     1   (0)| 00:00:01 |                        
|* 72 |                  INDEX UNIQUE SCAN             | PK_PARALEGG_CODILEGG  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  73 |               TABLE ACCESS BY INDEX ROWID      | RELAAVVIDETTCATE      
PLAN_TABLE_OUTPUT                                                              
      |     2 |    18 |       |     3   (0)| 00:00:01 |                        
|* 74 |                INDEX RANGE SCAN                | IDX_RELAAVVIDETTCATE  
      |     2 |       |       |     2   (0)| 00:00:01 |                        
|  75 |              TABLE ACCESS FULL                 | RELAAVVIPROV          
      |   308K|  2713K|       |   440   (3)| 00:00:06 |                        
|* 76 |             TABLE ACCESS BY INDEX ROWID        | GESTAZIEINTE          
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|* 77 |              INDEX UNIQUE SCAN                 | UQ_GESTAZIEINTE_AZIEPRO
VCATE |     1 |       |       |     0   (0)| 00:00:01 |                        
|  78 |            TABLE ACCESS BY INDEX ROWID         | ANAGENTI              
      |     1 |   138 |       |     1   (0)| 00:00:01 |                        
|* 79 |             INDEX UNIQUE SCAN                  | PK_ANAGENTI_CODIENTE  
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  80 |           TABLE ACCESS BY INDEX ROWID          | PARAPROV              
      |     1 |    15 |       |     1   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|* 81 |            INDEX UNIQUE SCAN                   | PK_CODIPROV           
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  82 |          TABLE ACCESS BY INDEX ROWID           | PARACOMU              
      |     1 |    21 |       |     1   (0)| 00:00:01 |                        
|* 83 |           INDEX UNIQUE SCAN                    | PK_CODIPROVCOMU       
      |     1 |       |       |     0   (0)| 00:00:01 |                        
|  84 |        HASH GROUP BY                           |                       
PLAN_TABLE_OUTPUT                                                              
      |  3919 |  2296K|  4840K|  1787   (2)| 00:00:22 |                        
|* 85 |         HASH JOIN                              |                       
      |  3919 |  2296K|       |   786   (4)| 00:00:10 |                        
|* 86 |          INDEX RANGE SCAN                      | UQ_GESTAZIEINTE_AZIEPRO
VCATE |  1062 |  9558 |       |     5   (0)| 00:00:01 |                        
|* 87 |          HASH JOIN                             |                       
      |   257 |   148K|       |   780   (4)| 00:00:10 |                        
PLAN_TABLE_OUTPUT                                                              
|* 88 |           HASH JOIN OUTER                      |                       
      |   174 |    98K|       |   334   (2)| 00:00:05 |                        
|  89 |            NESTED LOOPS OUTER                  |                       
      |   174 | 97614 |       |   304   (2)| 00:00:04 |                        
|* 90 |             HASH JOIN                          |                       
      |   174 | 95004 |       |   302   (2)| 00:00:04 |                        
|* 91 |              HASH JOIN RIGHT OUTER             |                       
      |   174 | 70992 |       |   187   (1)| 00:00:03 |                        
PLAN_TABLE_OUTPUT                                                              
|  92 |               TABLE ACCESS FULL                | ANAGUFFIENTI          
      |   963 | 30816 |       |     5   (0)| 00:00:01 |                        
|  93 |               NESTED LOOPS OUTER               |                       
      |   174 | 65424 |       |   182   (1)| 00:00:03 |                        
|  94 |                NESTED LOOPS OUTER              |                       
      |   174 | 60030 |       |   181   (1)| 00:00:03 |                        
|  95 |                 NESTED LOOPS OUTER             |                       
PLAN_TABLE_OUTPUT                                                              
      |   174 | 55854 |       |   180   (1)| 00:00:03 |                        
|  96 |                  NESTED LOOPS OUTER            |                       
      |   174 | 51678 |       |   179   (1)| 00:00:03 |                        
|  97 |                   NESTED LOOPS                 |                       
      |   174 | 48024 |       |   177   (0)| 00:00:03 |                        
|* 98 |                    INDEX RANGE SCAN            | UQ_RELAAVVIBOLL_BOLLAVV
I     |   174 |  1566 |       |     3   (0)| 00:00:01 |                        
PLAN_TABLE_OUTPUT                                                              
|* 99 |                    TABLE ACCESS BY INDEX ROWID | ANAGAVVI              
      |     1 |   267 |       |     1   (0)| 00:00:01 |                        
|*100 |                     INDEX UNIQUE SCAN          | PK_ANAGAVVI_CODIAVVI  
      |     1 |       |       | 

Hi,
I've just did some tests, but in all case
CREATE OR REPLACE VIEW V_BOLL0003 AS
select  /*+ INDEX(RELAAVVIPROV INDX_RELAAVVIPROV_CODIPROV) */ d.codi_Azie        , a.codi_prov     , ...
CREATE OR REPLACE VIEW V_BOLL0003 AS
select  /*+ INDEX(RELAAVVIPROV INDX_RELAAVVIPROV_CODIAVVI) */ d.codi_Azie        , a.codi_prov     , ...
CREATE OR REPLACE VIEW V_BOLL0003 AS
select  /*+ INDEX(RELAAVVIPROV INDX_RELAAVVIPROV_CODIAVVI INDX_RELAAVVIPROV_CODIPROV) */ d.codi_Azie        , a.codi_prov     , ...
CREATE OR REPLACE VIEW V_BOLL0003 AS
select  /*+ INDEX(RELAAVVIPROV) */ d.codi_Azie        , a.codi_prov     , ...always I have the "Access Full Scan" on RelaAvviProv.
Any suggestions are welcome.
Thank's
Message was edited by:
mosquito70

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