Statistics on a view on pipeline function

Hi,
Suppose we create the next view v:
create view v as select code, desc from table(pipelined_function);
Now Oracle CBO does not have any clue about the data generated by pipelined_function, then the question is 'Can I set statistics for the columns of the view?'
It is obvious that we can use dbms_stats.gather_table_stats on the view, the only possibility, if possible, is to set manually the statistics for each column on the view. Is this possible?
This just occured to me so I did not try to use dbms_stats to set statistics on the view columns.
Kind regards
Taoufik

Since you can't have indexes on views (or pipelined table functions), I guess it's not obvious to me how something like a histogram would be beneficial. Selectivity is useful if the optimizer is trying to figure out whether to full-scan a table or to use an index, which index to use, whether to transform a SQL statement by pushing a predicate, etc. It's not obvious how that would apply to a pipelined table function, where there is only one possible way to materialized the result. Beyond that, the CARDINALITY hint tells the optimizer most of what it needs to know in order to figure out how to join the data that was just materialized to the other tables in the query.
As for regular SQL views, there is generally no need (or benefit) to having statistics on a view because the optimizer will generally inline the view as part of the transformation step, so the optimizer has access to the statistics for the underlying tables at that point. Now, if the views are doing computations, 11g's new virtual column functionality might be beneficial in giving the optimizer information about the selectivity of those computed data elements. Function-based indexes in earlier versions might also be appropriate for providing the CBO additional information and/or additional access paths.
Justin
I should also note that it's entirely possible that I'm simply missing the benefit and that the folks that live and breathe CBO development are working on the sort of enhancements you're hoping for in the next version of Oracle. The CBO is a very rapidly evolving animal, after all.
Message was edited by:
Justin Cave

Similar Messages

Interactive Report using a View with a Pipelined Function

Hello fellow Apex people,
I'm Using Application Express 4.1.0.00.32
I've got an interactive report that references a view (STOCK) and a pipelined function
The basic query is listed below.
SELECT S.CHANGED_TIME "Changed Time"
, S.CHANGED_BY "Changed By"
, S.ID "Id"
, STKST_DESCRS.STOCK_STATUS_CODES "Stock Status Codes"
, STKST_DESCRS.STOCK_STATUS_DESCRS "Stock Status"
, S.ORIGINAL_CONTAINER "Original Container"
FROM STOCK S
, table(LWS_StkstStatus (S.ID)) STKST_DESCRS
ORDER BY S.CO_ID,
S.SEQUENCE_NUM;
When the page is first run all the data is displayed correctly,
If I define a filter, sort or a blank search the data from the pipelined function (STKST_DESCRS.) becomes null and isn't displayed.
Does anyone know what is happening?
Many Thanks

I'm curious why you find this dangerous. I want a report that looks like this:
Opportunity X:
4 - 2-apr-2008 - Closed deal
3 - 1-mar-2008 - Called Joe again
2 - 12-feb-2008 - Called Joe
1 - 14-jan-2008 - Initial call with customer.
When you enter a new note, I want it to be numbered 5. The only problem I can imagine is someone deleting a note, which will almost never happen, and if it does, it just leaves a numbering gap. I don't see how using the function in a SELECT will accomplish this.

List View Report with pipelined function in Mobile application and ORA-01007: variable not in select list

Hi!
I have a problem with List View Report in mobile application (theme 50 in apex) after updating to apex 4.2.2. I created Report -> List View. I used select from pipelined function in Region Source. Then when page is running and submited three times (or refreshed three times) I get an error:
Error during rendering of region "LIST VIEW".
ORA-01007: variable not in select list
Technical Info (only visible for developers)
is_internal_error: true
apex_error_code: APEX.REGION.UNHANDLED_ERROR
ora_sqlcode: -1007
ora_sqlerrm: ORA-01007: variable not in select list
component.type: APEX_APPLICATION_PAGE_REGIONS
component.id: 21230833903737364557
component.name: LIST VIEW
error_backtrace:
     ORA-06512: at "APEX_040200.WWV_FLOW_DISP_PAGE_PLUGS", line 4613
     ORA-06512: at "APEX_040200.WWV_FLOW_DISP_PAGE_PLUGS", line 3220
I get this error only when I use select from pipelined function in Region Source (for example: "select value1, value2 from table(some_pipelined_function(param1, param2)) ").
You can check it on http://apex.oracle.com/pls/apex/f?p=50591 (login - demo, password - demo).
In this application:
- I created package TAB_TYPES_PKG:
create or replace PACKAGE TAB_TYPES_PKG IS
TYPE cur_rest_r IS RECORD (
    STR_NAME          VARCHAR2(128),
    INFO              VARCHAR2(128)
TYPE cur_rest_t IS TABLE OF cur_rest_r;
END TAB_TYPES_PKG;
- I created pipelined function TEST_FUNC:
create or replace
FUNCTION TEST_FUNC
RETURN TAB_TYPES_PKG.cur_rest_t PIPELINED IS
r_cur_rest TAB_TYPES_PKG.cur_rest_r;
BEGIN
r_cur_rest.STR_NAME := 'ROW 1';
r_cur_rest.INFO := '10';
PIPE ROW (r_cur_rest);
r_cur_rest.STR_NAME := 'ROW 2';
r_cur_rest.INFO := '20';
PIPE ROW (r_cur_rest);
r_cur_rest.STR_NAME := 'ROW 3';
r_cur_rest.INFO := '30';
PIPE ROW (r_cur_rest);
r_cur_rest.STR_NAME := 'ROW 4';
r_cur_rest.INFO := '40';
PIPE ROW (r_cur_rest);
r_cur_rest.STR_NAME := 'ROW 5';
r_cur_rest.INFO := '50';
PIPE ROW (r_cur_rest);
RETURN;
END TEST_FUNC;
- I created List View Report on Page 1:
Region Source:
SELECT str_name,
       info
FROM TABLE (TEST_FUNC)
We can see error ORA-01007 after refresing (or submiting) Page 1 three times or more.
How to fix it?

Hi all
I'm experiencing the same issue. Predictably on every third refresh I receive:
Error
Error during rendering of region "Results".
ORA-01007: variable not in select list
Technical Info (only visible for developers)
is_internal_error: true
apex_error_code: APEX.REGION.UNHANDLED_ERROR
ora_sqlcode: -1007
ora_sqlerrm: ORA-01007: variable not in select list
component.type: APEX_APPLICATION_PAGE_REGIONS
component.id: 6910805644140264
component.name: Results
error_backtrace: ORA-06512: at "APEX_040200.WWV_FLOW_DISP_PAGE_PLUGS", line 4613 ORA-06512: at "APEX_040200.WWV_FLOW_DISP_PAGE_PLUGS", line 3220
OK
I am running Application Express 4.2.2.00.11 on GlassFish 4 using Apex Listener 2.0.3.221.10.13.
Please note: this works perfectly using a classic report in my desktop application; however, no joy on the mobile side with a list view. I will use a classic report in the interim.
My region source is as follows:
SELECT description AS "DESCRIPTION", reference AS "REFERENCE" FROM TABLE(AUTOCOMPLETE_LIST_VIEW_FNC('RESULTS'))
The procedure:
FUNCTION AUTOCOMPLETE_LIST_VIEW_FNC(
      p_collection_name IN VARCHAR2)
    RETURN list_row_table_type
AS
    v_tab list_row_table_type := list_row_table_type();
BEGIN
    DECLARE
      jsonarray json_list;
      jsonobj json;
      json_clob CLOB;
    BEGIN
      SELECT clob001
      INTO json_clob
      FROM apex_collections
      WHERE collection_name = p_collection_name;
      jsonobj              := json(json_clob);
      jsonarray            := json_ext.get_json_list(jsonobj, 'predictions');
      FOR i IN 1..jsonArray.count
      LOOP
        jsonobj := json(jsonArray.get(i));
        v_tab.extend;
        v_tab(v_tab.LAST) := list_row_type(json_ext.get_string(jsonobj, 'description'), json_ext.get_string(jsonobj, 'reference'));
      END LOOP;
      RETURN(v_tab);
    END;
END AUTOCOMPLETE_LIST_VIEW_FNC;
Thanks!
Tim

BC4J view objects on pipeline functions

Hello,
I just wanted to find out if we can place a BC4J view object on the new Oracle 9i Pipeline functions.
Thanks
Ramna

If it still looks on the outside like a database view to the JDBC client (BC4J in this case), then sure.
If you're making updates, then your underlying entity object will have to:
[list]
[*]Be mapped to an appropriate, updateable table, or
[*]Write INSTEAD OF triggers for your view
[list]
Let us know if you hit any problems.

Pipelined function ignores DML changes on subqueries

Hello all,
I have a really specific issue when using a pipelined function used in a complex subquery where the function ignores the changes made on the current transaction. The problem is the hidden hint materialize sometimes used by the Oracle optimizer. I say sometimes because it depends mostly on the execution plan and the complexity of the query.
I can repeat the problem with a dummy scenario.
Let's say we have a dummy table with a simple record :
CREATE TABLE DUMMY ("NAME" VARCHAR2(50 BYTE));
INSERT INTO DUMMY VALUES('Original name');
We then create a package which will contain our pipelined function and its record object and collection:
CREATE OR REPLACE PACKAGE PKG_DUMMY AS
TYPE DUMMY_RECORD IS RECORD (NAME VARCHAR2(50 BYTE));
TYPE DUMMY_RECORDS IS TABLE OF DUMMY_RECORD;
FUNCTION FUNC_GET_DUMMY_NAME RETURN DUMMY_RECORDS PIPELINED;
END PKG_DUMMY;
CREATE OR REPLACE
PACKAGE BODY PKG_DUMMY AS
FUNCTION FUNC_GET_DUMMY_NAME RETURN DUMMY_RECORDS PIPELINED AS
BEGIN
FOR CUR IN ( SELECT * FROM DUMMY )
LOOP
PIPE ROW (CUR);
END LOOP;
END FUNC_GET_DUMMY_NAME;
END PKG_DUMMY;
With this SQL query, we can return the value of the table by the pipelined function :
WITH DUMMY_NAME AS
SELECT "NAME"
FROM TABLE(PKG_DUMMY.FUNC_GET_DUMMY_NAME())
SELECT "NAME"
FROM DUMMY_NAME
Result
Original name
If we modify the DUMMY table with a new name without a commit, and re-execute the query, we got the same result :
UPDATE DUMMY SET "NAME" = 'New name';
Result
New name
But if we add the materialize hint in the subquery (without doing a commit or rollback), we have the original value hence my issue :
WITH DUMMY_NAME AS
SELECT /*+ materialize */ "NAME"
FROM TABLE(PKG_DUMMY.FUNC_GET_DUMMY_NAME())
SELECT "NAME"
FROM DUMMY_NAME
Result
Original name
I know I can force my subquery to use an inline hint instead of the "materialize" hint chose by the optimizer but then the query lose a lot of performance. Is there a way to force Oracle to use current DML changes with the materialize hint on a pipelined funtion in a subquery?
This thread is also for this issue : http://stackoverflow.com/questions/1597467/is-using-a-select-inside-a-pipelined-pl-sql-table-function-allowed

Hi Eliante, Hi Dominic,
Very Interesting. Here what I can reproduce in Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
sql > truncate table dummy;
Table truncated.
sql >INSERT INTO DUMMY VALUES('Original name');
1 row created.Please pay attention that I didn't commit
sql > with dummy_name as
2 (
3 select "NAME"
4 from table(pkg_dummy.func_get_dummy_name())
5 )
6 select "NAME"
7 from dummy_name;
NAME
Original name
sql> start c:\dispcursor
PLAN_TABLE_OUTPUT
SQL_ID 838mtur4m74j2, child number 0
with dummy_name as ( select "NAME" from table(pkg_dummy.func_get_dummy_name()) ) select "NAME"
from dummy_name
Plan hash value: 117055
| Id | Operation                         | Name                | Starts | A-Rows |   A-Time   | Buffers |
|   1 | COLLECTION ITERATOR PICKLER FETCH| FUNC_GET_DUMMY_NAME |      1 |      1 |00:00:00.01 |      15 |
Note
   - rule based optimizer used (consider using cbo)
17 rows selected.
sql > with dummy_name as
2 (
3 select /*+ materialize */ "NAME"
4 from table(pkg_dummy.func_get_dummy_name())
5 )
6 select "NAME"
7 from dummy_name;
no rows selected
sql >start c:\dispcursor
PLAN_TABLE_OUTPUT
SQL_ID 9frx3wjk992rd, child number 0
with dummy_name as ( select /*+ materialize */ "NAME" from table(pkg_dummy.func_get_dummy_name()) ) select "NAME" from dummy_name
Plan hash value: 1359790764
| Id | Operation                           | Name                        | Starts | E-Rows | A-Rows |   A-Time   | Buffers | OMem | 1Mem | Used-Mem |
|   1 | TEMP TABLE TRANSFORMATION          |                             |      1 |        |      0 |00:00:00.01 |      20 |       |       |          |
|   2 |   LOAD AS SELECT                    |                             |      1 |        |      0 |00:00:00.01 |      19 | 1024 | 1024 |          |
|   3 |    COLLECTION ITERATOR PICKLER FETCH| FUNC_GET_DUMMY_NAME         |      1 |        |      0 |00:00:00.01 |      17 |       |       |          |
|   4 |   VIEW                              |                             |      1 |   8168 |      0 |00:00:00.01 |       0 |       |       |          |
|   5 |    TABLE ACCESS FULL                | SYS_TEMP_0FD9D780C_BD7649E3 |      1 |   8168 |      0 |00:00:00.01 |       0 |       |       |          |
16 rows selected.I can point out that the TABLE ACCESS FULL of the global temporary SYS_TEMP_0FD9D780C_BD7649E3 table created by Oracle in response to the -materialize hint is returning *0 rows* in operation 5.
Why?
It seems for me that the reason for that comes from the fact that the creation of this SYS_TEMP_0FD9D780C_BD7649E3 table is done via direct path read/direct path write and as far as
the insert of *'Original name'* has not been pushed yet into the disc then materializing the query will generate an empty temporary table (empty in this case).
This is why if I had committed I will not have seen such a kind of discrepancy between those two queries
What do you think?
Mohamed Houri
www.hourim.wordpress.com

Pipelined Function with execute immediate

Hello Experts,
I have created a Pipe lined function with execute immediate, due to below requirement;
1) Columns in where clause is passed dynamically.
2) I want to know the data stored into above dynamic columns.
3) I want to use it in report, so I don't want to insert it into a table.
I have created a TYPE, then through execute immediate i have got the query and result of that query will be stored in TYPE.
But when calling the function i am getting
ORA-00932: inconsistent datatypes: expected - got -
Below is my function and type, let me know i am going wrong, and is my logic correct.
CREATE OR REPLACE TYPE OBJ_FPD AS OBJECT
                  (LOW_PLAN_NO VARCHAR2 (40),
                   FPD VARCHAR2 (5),
                   SERIAL_NO NUMBER,
                   CEDIA_CODE VARCHAR2 (2),
                   DT DATE);
CREATE OR REPLACE TYPE FPD_TBL_TYPE AS TABLE OF OBJ_FPD;
CREATE OR REPLACE FUNCTION FUNC_GET_FPD_DATE (P_LOW_PLAN_NO    VARCHAR2,
                                              P_CEDIA_CODE     VARCHAR2,
                                              P_SERIAL_NO      NUMBER)
   RETURN FPD_TBL_TYPE
   PIPELINED
AS
   CURSOR C1
   IS
          SELECT 'FPD' || LEVEL TBL_COL
            FROM DUAL
      CONNECT BY LEVEL <= 31;
   V_STR        VARCHAR2 (5000);
   V_TBL_TYPE   FPD_TBL_TYPE;
BEGIN
   FOR X IN C1
   LOOP
      V_STR :=
            'SELECT A.low_PLAN_NO,
           A.FPD,
           A.SERIAL_NO,
           A.cedia_code,
           TO_DATE (
                 SUBSTR (FPD, 4, 5)
              || ''/''
              || TO_CHAR (C.low_PLAN_PERIOD_FROM, ''MM'')
              || ''/''
              || TO_CHAR (C.low_PLAN_PERIOD_FROM, ''RRRR''),
              ''DD/MM/RRRR'')
              DT FROM ( SELECT low_PLAN_NO, '
         || ''''
         || X.TBL_COL
         || ''''
         || ' FPD, '
         || X.TBL_COL
         || ' SPTS, SERIAL_NO, cedia_code FROM M_low_PLAN_DETAILS WHERE NVL('
         || X.TBL_COL
         || ',0) > 0 AND SERIAL_NO = '
         || P_SERIAL_NO
         || ' AND cedia_code = '
         || ''''
         || P_CEDIA_CODE
         || ''''
         || ' AND low_PLAN_NO = '
         || ''''
         || P_LOW_PLAN_NO
         || ''''
         || ') A,
           M_low_PLAN_DETAILS B,
           M_low_PLAN_MSTR C
     WHERE     A.low_PLAN_NO = B.low_PLAN_NO
           AND A.cedia_code = B.cedia_code
           AND A.SERIAL_NO = B.SERIAL_NO
           AND B.low_PLAN_NO = C.low_PLAN_NO
           AND B.CLIENT_CODE = C.CLIENT_CODE
           AND B.VARIANT_CODE = C.VARIANT_CODE
CONNECT BY LEVEL <= SPTS';
      EXECUTE IMMEDIATE V_STR INTO V_TBL_TYPE;
      FOR I IN 1 .. V_TBL_TYPE.COUNT
      LOOP
         PIPE ROW (OBJ_FPD (V_TBL_TYPE (I).LOW_PLAN_NO,
                            V_TBL_TYPE (I).FPD,
                            V_TBL_TYPE (I).SERIAL_NO,
                            V_TBL_TYPE (I).CEDIA_CODE,
                            V_TBL_TYPE (I).DT));
      END LOOP;
   END LOOP;
   RETURN;
EXCEPTION
   WHEN OTHERS
   THEN
      RAISE_APPLICATION_ERROR (-20000, SQLCODE || ' ' || SQLERRM);
      RAISE;
END;Waiting for your views.
Regards,

Ora Ash wrote:
Hello Experts,
I have created a Pipe lined function with execute immediate, due to below requirement;
1) Columns in where clause is passed dynamically.No, that's something you've introduced, and is due to poor database design. You appear to have columns on your table called FPD1, FPD2 ... FPD31. The columns do not need to be 'passed dynamically'
2) I want to know the data stored into above dynamic columns.And you can know the data without it being dynamic.
3) I want to use it in report, so I don't want to insert it into a table.That's fine, though there's no reason to use a pipelined function.
You also have an pointless exception handler, which masks any real errors.
I'm not quite sure what the point of your "connect by" is in your query as we don't have your tables or data or know for sure what the expected output is.
However, in terms of handling the 'dynamic' part that you've introduced, then you would be looking at doing something along the following lines, using a static query that requires no poor dynamic code, and no pipelined function...
with x as (select level as dy from dual connect by level <= 31)
select a.low_plan_no
      ,a.fpd
      ,a.serial_no
      ,a.cedia_code
      ,trunc(c.low_plan_period_from)+a.dy-1 as dt
from (select low_plan_no
             ,dy
             ,'FPD'||dy as fpd
             ,spts
             ,serial_no
             ,cedia_code
       from (
             select low_plan_no
                   ,x.dy
                   ,case x.dy when 1 then fpd1
                              when 2 then fpd2
                              when 3 then fpd3
                              when 4 then fpd4
                              when 5 then fpd5
                              when 6 then fpd6
                              when 7 then fpd7
                              when 8 then fpd8
                              when 9 then fpd9
                              when 10 then fpd10
                              when 11 then fpd11
                              when 12 then fpd12
                              when 13 then fpd13
                              when 14 then fpd14
                              when 15 then fpd15
                              when 16 then fpd16
                              when 17 then fpd17
                              when 18 then fpd18
                              when 19 then fpd19
                              when 20 then fpd20
                              when 21 then fpd21
                              when 22 then fpd22
                              when 23 then fpd23
                              when 24 then fpd24
                              when 25 then fpd25
                              when 26 then fpd26
                              when 27 then fpd27
                              when 28 then fpd28
                              when 29 then fpd29
                              when 30 then fpd30
                              when 31 then fpd31
                    else null
                    end as spts
                   ,serial_no
                   ,cedia_code
             from   x cross join m_low_plan_details
             where serial_no = p_serial_no
             and    cedia_code = p_cedia_code
             and    low_plan_no = p_low_plan_no
       where nvl(spts,0) > 0
      ) A
      join m_low_plan_details B on (    A.low_plan_no = B.low_plan_no
                                    and A.cedia_code = B.cedia_code
                                    and A.serial_no = B.serial_no
      join m_low_plan_mstr C on (    B.low_plan_no = C.low_plan_no
                                 and B.client_code = C.client_code
                                 and B.variant_code = C.variant_code
connect by level <= spts;... so just remind us again why you think it needs to be dynamic?

What exactly is parallelised in pipelined functions?

Hi All,
I have a slight confusion about pipelined table functions, which are parallelised (with PARALLEL_ENABLE clause).
Everywhere on the internet/documents it is mentioned that, we can use PARALLEL_ENABLE with pipelined table functions, I am not clear about exactly how this will work?
For example, I have a pipelines function, which is called by C# code to write data in file ( Oracle v11.2 on Linux 64bit). Function looks something like
FUNCTION extract_data (param1..., param2...., param3.... )
RETURN data_tab /* this data_tab is table of record type data_rec */
PIPELINED
IS
     v_data_rec      data_rec := data_rec ( null, null,....., null);
BEGIN
FOR i_rec IN ( select col1, col2, col3,.... FROM table1, table2 WHERE <all typical stuff here> )
LOOP
          v_data_rec.col1 := i_rec.col1 ;
          v_data_rec.col2 := i_rec.col2 ;
          v_data_rec.col3 := i_rec.col3 ;
          if v_data_rec.col1 = 'A' then
              select col into v_data_rec.col4 from tablex where .... ;
          elsif v_data_rec.col1 = 'B' then
              select col into v_data_rec.col4 from tabley where .... ;
          elsif v_data_rec.col1 = 'C' then
              select col into v_data_rec.col4 from tablez where .... ;
          elsif v_data_rec.col1 = 'D' then
              select col into v_data_rec.col4 from tablet where .... ;
          end if ;
          /* some more bits of complex logic here */
          PIPE ROW ( v_data_rec ) ;
END LOOP ;
END extract_data ;Now, if I add PARALLEL_ENABLE to my function definition, which bits will be parallelised? will anything be parallelised ?
Thoughts please.
Thanks in advance.

i.e. this ( where the query might well be run in parallel, but the result processed serially by the pipelined function):
SQL> explain plan for
2 select *
3 from   table(
4         f_serial_pipe
5         (cursor(select /*+ parallel (t1 4) */
6                        *
7                 from   t1)));
Explained.
SQL>
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 1425181138
| Id | Operation                          | Name          | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT                   |               | 8168 | 1100K|    34   (3)| 00:00:01 |
|   1 | VIEW                              |               | 8168 | 1100K|    34   (3)| 00:00:01 |
|   2 |   COLLECTION ITERATOR PICKLER FETCH| F_SERIAL_PIPE | 8168 |       |    34   (3)| 00:00:01 |
Note
   - dynamic sampling used for this statement (level=4)
13 rows selected.
SQL> is different from thsi:
SQL> explain plan for
2 select *
3 from   table(
4         f_parallel_pipe
5         (cursor(select /*+ parallel (t1 4) */
6                        *
7                 from   t1)));
Explained.
SQL>
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 2029647211
| Id | Operation                            | Name            | Rows | Bytes | Cost (%CPU)| Time     |    TQ |IN-OUT| PQ Distrib |
|   0 | SELECT STATEMENT                     |                 | 8168 | 1100K|    34   (3)| 00:00:01 |        |      |            |
|   1 | PX COORDINATOR                      |                 |       |       |            |          |        |      |            |
|   2 |   PX SEND QC (RANDOM)                | :TQ10000        | 8168 | 1100K|    34   (3)| 00:00:01 | Q1,00 | P->S | QC (RAND) |
|   3 |    VIEW                              |                 | 8168 | 1100K|    34   (3)| 00:00:01 | Q1,00 | PCWP |            |
|   4 |     COLLECTION ITERATOR PICKLER FETCH| F_PARALLEL_PIPE | 8168 |       |    34   (3)| 00:00:01 | Q1,00 | PCWP |            |
|   5 |      PX BLOCK ITERATOR               |                 |   798K|    97M| 2659   (1)| 00:00:02 | Q1,00 | PCWC |            |
|   6 |       TABLE ACCESS FULL              | T1              |   798K|    97M| 2659   (1)| 00:00:02 | Q1,00 | PCWP |            |
Note
   - dynamic sampling used for this statement (level=4)
17 rows selected.
SQL>

How the performance will increase with pipelined function.

Respects all,
Can u please help to explain one example regarding which i have mentioned in the subject line.
Thanks

Hi,
pipelined functions don't "increase performance".
1) This is an entirely wrong way to think about Oracle features. There are no Oracle features that automatically "increase performance", like some sort of a "turbo" button (not even partitioning! not even indexes!). Most of the features can work both ways -- when used appropriately, they improve performance, when not, they can cripple it.
2) Pipelined functions are not about performance. They simply provide a way for you to SELECT from a PL/SQL function (which otherwise is impossible to do). Not only you can generate sets of values this way, but also you can join it with other tables/views, that can be very convenient. Pipelined functions can also be very convenient for generating formatted text reports they allow you to bypass limitations of long/lob data types). But none of this has to do with performance.
3) Pipelined functions are inevitably associated with row-by-row processing (because there is no way to pipe a set of rows at once). So when the choice is between returning a refcursor (from which you can do a bulk fetch), and using a pipelined function, from which you'll be returning rows one by one, and none of items listed in 2) applies, then chances are that pipelined function is going to be slower.
So whoever claimed that "pipelined functions increase performance", either he/she is incompetent, or you took his/her words out of the context or misintepreted them.
Best regards,
Nikolay

Apex3.2.1 pipelined functions with parameters send cpu to 100 percent

I have just installed 11g and exported a schema from 10g into it.
When I run Apex3.2.1 and open a page with a flash chart that running off a table object populated by a pipelined function the CPU goes in overload 100%.
I have tracked the problem to parameters on the pipelined function if I use bind parameters( :P640_YEARS, :P640_EMPLOYER_ID) then the problem happens but if I hard code values all is fine (2010,99).
This happens with every flash chart we have, which makes our application and database unusable.
Any ideas.
Derek

Thanks very much for the posts, I took the opportunity to upgrade to Apex 4.0.2 as suggested by Patrick and the application works fine again now.
Interestingly I did re-analyse the statistics but only as a reaction to the problem, should have been done regardless.
I did consider re-writing the pipelined functions but to be honest it would have been difficult as they are extremely complex, I wasn't looking forward to the task. I have become quite a fan of pipelined functions for building flash charts, dash boards extra, its as always about tuning the sql.
Thanks very to all
Derek
Edited by: 835735 on Feb 10, 2011 1:50 PM

Pipeline function raised ORA-06519: active autonomous transaction detected

Hi All,
My name is John and I've got a problem which I need to share with all of you guru and experts. I've created the following pipeline function under the Oracle user ABC:
CREATE OR replace FUNCTION SomeFunction(p_from_date DATE, p_to_date DATE) RETURN T_TAB_A pipelined
IS
PRAGMA autonomous_transaction;
BEGIN
DELETE FROM temp_rcm;
INSERT INTO temp_rcm
SELECT * FROM int.facility fd,
int.capacity co
WHERE co.resource_name = fd.resource_name
AND co.trade_date = fd.trade_date
AND co.trade_date BETWEEN p_from_date AND p_to_date;
COMMIT;
FOR rec IN (SELECT co.*
FROM temp_rcm co
left join int.outage o
ON ( o.flag = 'Y'
AND o.reason_flag = 'F'
AND o.INTERVAL = co.INTERVAL
AND co.resource_name = o.resource_name )
ORDER BY co.INTERVAL,
co.name) LOOP
pipe ROW (T_A( rec.INTERVAL, rec.trade_date,
rec.resource_name,rec.day_of_week_long, rec.working_day, rec.peak));
END LOOP;
RETURN;
END SomeFunction;
I was able to compile and create the SomeFunction function successfully but when I executed it using the following command:
select * from table(SomeFunction(to_date('01/01/2010',to_date('01/01/2010')));
I was returned with the Oracle error - ORA-06519: active autonomous transaction detected and rolled back
I have searched through the web, such Oracle error occurs whenever the function has a missing 'COMMIT' or 'ROLLBACK' command inside an autonomous_transaction. But the fact is I have already included the 'COMMIT;' in the function. I suspected that the error was caused by the tables which I queried against (like int.facility and int.capacity) were all views that belonged to another schema called int. Or is that something that I miss in the function? Thank you for your time and assistance.
Regards,
John

johnwanng wrote:
Hi Guys,
Thank you for all your feedback. In addition to your reply, Bill, can you spare some time and provide us a simple example of the steps involved to implement the 'correct' implementation based on the queries that I've used. As I do not understand your vanilla approach. Much appreciated and thank you for the time again.
Regards,
JohnIf I had to guess, Billy may have meant something like this (untested):
CREATE OR REPLACE FUNCTION SomeFunction
( p_from_date IN int.facility.trade_date%TYPE
, p_to_date   IN int.facility.trade_date%TYPE
RETURN SYS_REFCURSOR
AS
     rcur     SYS_REFCURSOR;
BEGIN
     OPEN rcur FOR
          SELECT co.interval
               , co.trade_date
               , co.resource_name
               , co.day_of_week_long
               , co.working_day
               , co.peak
          FROM   int.capacity co
          JOIN   int.facility fd        ON fd.resource_name = co.resource_name
                                       AND fd.trade_date    = co.trade_date
          LEFT OUTER JOIN int.outage o ON o.interval       = co.interval
                                       AND o.resource_name = co.resource_name
          WHERE co.trade_date BETWEEN p_from_date AND p_to_date
          AND    o.reason_flag = 'F'
          AND    o.flag        = 'Y'
          ORDER BY co.interval
                 , co.name
     RETURN rcur;
END;
/I made the following modifications:
1. I set the input parameter data types to match that of the table column you are checking against. A good practice to get into.
2. Removed the autonomous transaction and inserting into a temp table. In Oracle it's a good practice to perform everything in a single SQL statement if possible.
3. Changed the return data type to a SYS_REFCURSOR
Hope this helps and provides a good example.

PipeLine Function Taking time to return Table record

Hi,
I want to use a function in join clause. so i go for pipelined function(using for loop to get record & 1 more loop to fetch in table type variable). i achieved what i required. but problem is it takes much time to fetch data. is there any other approach which returns table records without pipelined function.
please suggest me a better approach as soon as possible.

Hi,
Thanks all for the quick response.
I am using oracle 10g
this is the table details & the entire function.
Create object & table type to use in the function
CREATE OR REPLACE TYPE SYSADM.STR_TYPE AS OBJECT(COLUMNVALUE VARCHAR2(8),FromNo Int,ToNo Int)
CREATE OR REPLACE TYPE SYSADM.STR_ARRAY AS TABLE OF STR_TYPE
table involved
View : VesselType
column : Code varchar2(5)
Table : T065_SHIP
column : SKIPS_KODE varchar2(4)
CODE_SHIPTYPE varchar2(5)
Table : SelsKap
column : SELSKAPSKODE varchar2(4)
Table : t041_shiptypeusers
column : Code_ShipType varchar2(5)
USERID varchar2(8)
View : PositionBook
column : VesselCode varchar2(8)
VoyageNo integer
Company varchar2(4)
Table : T62_BRUKER_SELSKAP
column : SELSKAPSKODE varchar2(4)
BRUKER varchar2(8)
Pipelined function
CREATE OR REPLACE FUNCTION SYSADM.TF_ShiporShipTypeByUser
In_UserName IN VARCHAR2,
In_Type IN VARCHAR2,
In_VesselCode IN VARCHAR2,
In_CompanyHistory IN NUMBER DEFAULT 0
RETURN str_array PIPELINED AS
l_ShipTypeUser NUMBER(10,0);
l_CompanyUser NUMBER(10,0);
l_UseCompanyHistory NUMBER(1,0);
l_Snicsacct NUMBER(1,0);
BEGIN
BEGIN
SELECT shiptype_user,
company_user
INTO l_ShipTypeUser,
l_CompanyUser
FROM User_Segregation;
EXCEPTION
WHEN OTHERS THEN
l_ShipTypeUser := NULL;
l_CompanyUser := NULL;
END;
BEGIN
SELECT 1 INTO l_Snicsacct
FROM DUAL
WHERE NOT EXISTS ( SELECT 1 FROM sn_user_cfg WHERE UserID='SNICS' and CfgID='ACCTSYS');
EXCEPTION
WHEN OTHERS THEN
NULL;
END;
IF In_CompanyHistory = 1
THEN
BEGIN
SELECT CfgData
INTO l_UseCompanyHistory
FROM SN_User_Cfg
WHERE CfgID = 'USE COMPANY HISTORY'
AND UserID = 'SNICS';
EXCEPTION
WHEN OTHERS THEN
l_UseCompanyHistory := 0;
END;
END IF;
IF In_UserName = 'SYSADM' OR (l_CompanyUser = 0 AND l_ShipTypeUser = 0)
OR (l_CompanyUser = 1 and l_Snicsacct =1 ) or (In_CompanyHistory = 0 and l_CompanyUser = 1 and In_Type ='ShipType')
OR (l_ShipTypeUser = 1 and In_Type = 'Company')
THEN
BEGIN
IF In_Type = 'ShipType'
THEN
BEGIN
FOR cur IN (SELECT Code ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM VesselType )
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
ELSIF In_Type = 'Ship'
THEN
BEGIN
FOR cur IN (SELECT SKIPS_KODE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP
WHERE SKIPS_KODE = NVL(In_VesselCode,SKIPS_KODE ))
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
ELSIF In_Type = 'Company'
THEN
BEGIN
FOR cur IN (SELECT SELSKAPSKODE ShipCode
, NULL VoyageFrom
, NULL VoyageTo
FROM SelsKap)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
END IF;
END;
ELSE
IF In_Type = 'Ship'
THEN
BEGIN
IF l_ShipTypeUser =1
THEN
BEGIN
FOR cur IN (SELECT S.SKIPS_KODE ShipCode
, 1 FromVoyage
, 999999999 ToVoyage
FROM T065_SHIP S
JOIN t041_shiptypeusers U
ON S.CODE_SHIPTYPE = U.Code_ShipType
AND USERID = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
GROUP BY S.SKIPS_KODE)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.FromVoyage,cur.ToVoyage));
END LOOP;
RETURN;
END;
ELSIF l_CompanyUser = 1
THEN
BEGIN
IF l_UseCompanyHistory = 1 AND In_CompanyHistory = 1
THEN
FOR cur IN (SELECT a.VesselCode ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
JOIN T62_BRUKER_SELSKAP b
ON a.Company = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
UNION
SELECT a.VesselCode ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.VesselCode,
a.VoyageNo,
a.VoyageNo)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
ELSE
FOR cur IN (SELECT a.SKIPS_KODE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP a
JOIN T62_BRUKER_SELSKAP b
ON a.Company = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.SKIPS_KODE = NVL(In_VesselCode, a.SKIPS_KODE)
AND NVL(l_UseCompanyHistory,0) = 0
UNION
SELECT a.SKIPS_KODE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.SKIPS_KODE = NVL(In_VesselCode, a.SKIPS_KODE)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.SKIPS_KODE)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END IF;
END;
END IF;
END;
ELSIF In_Type = 'ShipType'
THEN
IF l_ShipTypeUser = 1
THEN
BEGIN
FOR cur IN (SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
JOIN t041_shiptypeusers U
ON S.CODE_SHIPTYPE = U.Code_ShipType
AND USERID = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
GROUP BY S.CODE_SHIPTYPE)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
ELSIF l_CompanyUser = 1
THEN
IF l_UseCompanyHistory = 1 AND In_CompanyHistory = 1
THEN
BEGIN
FOR cur IN (SELECT a.VesselType ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
JOIN T62_BRUKER_SELSKAP b
ON a.COMPANY = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.VesselCode = NVL(In_VesselCode,a.VesselCode)
UNION
SELECT a.VesselType ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.VesselType,
a.VoyageNo,
a.VoyageNo)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
ELSE
BEGIN
FOR cur IN (SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
JOIN T62_BRUKER_SELSKAP b
ON S.company = b.SELSKAPSKODE
AND B.BRUKER = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
AND NVL(l_UseCompanyHistory,0) = 0
UNION
SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
LEFT JOIN T62_BRUKER_SELSKAP b
ON S.company = b.SELSKAPSKODE
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
AND b.SELSKAPSKODE IS NULL)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
END IF;
END IF;
ELSIF In_Type = 'Company'
THEN
BEGIN
FOR cur IN (SELECT a.SELSKAPSKODE ShipCode
, NULL VoyageFrom
, NULL VoyageTo
FROM Selskap a
JOIN T62_BRUKER_SELSKAP b
ON a.SELSKAPSKODE = b.SELSKAPSKODE
WHERE b.BRUKER = In_UserName
Union All
Select a.SELSKAPSKODE ShipCode
, NULL VoyageFrom
, NULL VoyageTo
From Selskap a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.SELSKAPSKODE = b.SELSKAPSKODE
Where b.SELSKAPSKODE IS NULL
GROUP BY a.SELSKAPSKODE)
LOOP
PIPE ROW(str_type(cur.ShipCode,cur.VoyageFrom,cur.VoyageTo));
END LOOP;
RETURN;
END;
END IF;
END IF;
END;
select statement which i call the function it takes minimum 6 seconds to execute. It gives 8339 records
WITH deftbl AS ( SELECT /*+ CACHE(deftbl) */
/*+ result_cache */
a.VesselCode,
a.VoyageNo,
CASE a.BallastLeg When 0
THEN MIN(a.ArrivalDate)
ELSE NVL(( SELECT MAX(DepartureDate)
FROM PositionBook b
WHERE b.VesselCode = a.VesselCode
AND b.VoyageNo = (Select MAX(VoyageNo) From PositionBook c Where c.VesselCode = a.VesselCode and c.VoyageNo<a.VoyageNo)
),MIN(a.ArrivalDate))
END AS StartOfVoyage,
MAX(DepartureDate) EndOfVoyage
FROM PositionBook a
JOIN TABLE(*TF_ShiporShipTypeByUser*('BKA', 'Ship', NULL, 1)) D /*Calling the function*/
ON D.ColumnValue = a.VesselCode
AND a.VoyageNo BETWEEN D.FromVoyageNo AND D.ToVoyageNo
GROUP BY VesselCode,VoyageNo,a.BallastLeg )
SELECT /*+ result_cache */
ROW_NUMBER() OVER(PARTITION BY a.VesselCode ORDER BY a.VoyageNo DESC) as "Row"
,a.VesselCode
,v.Name AS VesselName
,a.VoyageNo
,c.StartOfVoyage AS FromPort
,c.EndOfVoyage AS ToPort
/*,a.FROMPORT
,a.TOPORT*/
, CASE
WHEN ( SELECT PortName
FROM PositionBook b
WHERE b.VesselCode = a.VesselCode
AND b.VoyageNo = a.VoyageNo
AND SYSDATE BETWEEN ArrivalDate AND DepartureDate ) IS NOT NULL
THEN ( SELECT FIRST_VALUE(PortName) OVER(PARTITION BY b.vesselcode,b.VoyageNo ORDER BY b.vesselcode,b.VoyageNo,b.ArrivalDate,b.secondarytime)
FROM PositionBook b
WHERE b.VesselCode = a.VesselCode
AND b.VoyageNo = a.VoyageNo
AND SYSDATE BETWEEN ArrivalDate AND DepartureDate
AND ROWNUM=1
WHEN SYSDATE BETWEEN c.StartOfVoyage AND c.EndOfVoyage
THEN ( SELECT 'Steam From '||FIRST_VALUE(UPPER(PortName)) OVER(PARTITION BY b.vesselcode,b.VoyageNo ORDER BY b.vesselcode,b.VoyageNo,b.ArrivalDate desc,b.secondarytime desc)
FROM POSITIONBOOK b
WHERE b.VesselCode = a.VesselCode AND b.VoyageNo = a.VoyageNo
AND b.ArrivalDate<SYSDATE
AND ROWNUM=1
WHEN (c.StartOfVoyage-SYSDATE)>0
THEN 'Voyage Not Started'
WHEN (c.EndOfVoyage-SYSDATE)<0
THEN 'Voyage Completed'
ELSE Null
END "Location"
,( SELECT MIN(b.PortName) KEEP(DENSE_RANK FIRST ORDER BY b.ArrivalDate,b.secondarytime) OVER(PARTITION BY b.VesselCode,b.VoyageNo)
FROM POSITIONBOOK b
WHERE b.VesselCode = a.VesselCode AND b.VoyageNo = a.VoyageNo
AND b.ArrivalDate>SYSDATE
AND ROWNUM=1
) AS NextPort
, ( SELECT MIN(b.ArrivalDate) KEEP(DENSE_RANK FIRST ORDER BY b.ArrivalDate,b.secondarytime) OVER(PARTITION BY b.VesselCode,b.VoyageNo)
FROM POSITIONBOOK b
where b.VesselCode = a.VesselCode AND b.VoyageNo = a.VoyageNo
AND b.ArrivalDate>SYSDATE
AND ROWNUM=1
) AS NextETA
,a.STATUS VoyageStatus
,a.Trade
,UFN_MyVoyConcatinate_Values('FIXNOTE', a.VesselCode, a.VoyageNo) FixNote
,UFN_MyVoyConcatinate_Values('CHARTERER', a.VesselCode, a.VoyageNo) Charterer
,CASE WHEN st.CurrentStatus=0
THEN 1
WHEN st.CurrentStatus=1
THEN 0
ELSE st.CurrentStatus
END AS CurrentStatus
FROM Positionbook a
JOIN deftbl c
ON a.VesselCode = c.VesselCode
AND a.VoyageNo = c.VoyageNo
JOIN Vessel v
ON v.Code = c.VesselCode
LEFT JOIN GTT_VOYAGESTATUS st
ON st.VesselCode = c.Vesselcode
AND st.VoyageNo = c.VoyageNo
GROUP BY a.VesselCode
, v.Name
, a.VoyageNo
, c.StartOfVoyage
, c.EndOfVoyage
/*, a.FROMPORT
, a.TOPORT*/
, a.Status
, a.Trade
, st.CurrentStatus;
Note:
i changed the function without pipelined also. but it doesnt show much difference
non pipelined function
CREATE OR REPLACE FUNCTION TF_ShiporShipTypeByUser_nonp
In_UserName IN VARCHAR2,
In_Type IN VARCHAR2,
In_VesselCode IN VARCHAR2,
In_CompanyHistory IN NUMBER DEFAULT 0
RETURN str_array AS
l_ShipTypeUser NUMBER(10,0);
l_CompanyUser NUMBER(10,0);
l_UseCompanyHistory NUMBER(1,0);
l_Snicsacct NUMBER(1,0);
l_str_array str_array:=str_array();
BEGIN
BEGIN
SELECT shiptype_user,
company_user
INTO l_ShipTypeUser,
l_CompanyUser
FROM User_Segregation;
EXCEPTION
WHEN OTHERS THEN
l_ShipTypeUser := NULL;
l_CompanyUser := NULL;
END;
BEGIN
SELECT 1 INTO l_Snicsacct
FROM DUAL
WHERE NOT EXISTS ( SELECT 1 FROM sn_user_cfg WHERE UserID='SNICS' and CfgID='ACCTSYS');
EXCEPTION
WHEN OTHERS THEN
NULL;
END;
IF In_CompanyHistory = 1
THEN
BEGIN
SELECT CfgData
INTO l_UseCompanyHistory
FROM SN_User_Cfg
WHERE CfgID = 'USE COMPANY HISTORY'
AND UserID = 'SNICS';
EXCEPTION
WHEN OTHERS THEN
l_UseCompanyHistory := 0;
END;
END IF;
IF In_UserName = 'SYSADM' OR (l_CompanyUser = 0 AND l_ShipTypeUser = 0)
OR (l_CompanyUser = 1 and l_Snicsacct =1 ) or (In_CompanyHistory = 0 and l_CompanyUser = 1 and In_Type ='ShipType')
OR (l_ShipTypeUser = 1 and In_Type = 'Company')
THEN
BEGIN
IF In_Type = 'ShipType'
THEN
BEGIN
SELECT STR_TYPE(Code,1,999999999)
BULK COLLECT INTO l_str_array
FROM VesselType;
RETURN l_str_array;
END;
ELSIF In_Type = 'Ship'
THEN
BEGIN
SELECT STR_TYPE(SKIPS_KODE,1,999999999)
BULK COLLECT INTO l_str_array
FROM T065_SHIP
WHERE SKIPS_KODE = NVL(In_VesselCode,SKIPS_KODE);
RETURN l_str_array;
END;
ELSIF In_Type = 'Company'
THEN
BEGIN
SELECT STR_TYPE(SELSKAPSKODE,NULL,NULL)
BULK COLLECT INTO l_str_array
FROM SelsKap;
RETURN l_str_array;
END;
END IF;
END;
ELSE
IF In_Type = 'Ship'
THEN
BEGIN
IF l_ShipTypeUser =1
THEN
BEGIN
SELECT STR_TYPE(S.SKIPS_KODE,1,999999999)
BULK COLLECT INTO l_str_array
FROM T065_SHIP S
JOIN t041_shiptypeusers U
ON S.CODE_SHIPTYPE = U.Code_ShipType
AND USERID = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
GROUP BY S.SKIPS_KODE;
RETURN l_str_array;
END;
ELSIF l_CompanyUser = 1
THEN
BEGIN
IF l_UseCompanyHistory = 1 AND In_CompanyHistory = 1
THEN
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM ( SELECT a.VesselCode ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
JOIN T62_BRUKER_SELSKAP b
ON a.Company = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
UNION
SELECT a.VesselCode ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.VesselCode,
a.VoyageNo,
a.VoyageNo);
RETURN l_str_array;
ELSE
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM (SELECT a.SKIPS_KODE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP a
JOIN T62_BRUKER_SELSKAP b
ON a.Company = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.SKIPS_KODE = NVL(In_VesselCode, a.SKIPS_KODE)
AND NVL(l_UseCompanyHistory,0) = 0
UNION
SELECT a.SKIPS_KODE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.SKIPS_KODE = NVL(In_VesselCode, a.SKIPS_KODE)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.SKIPS_KODE);
RETURN l_str_array;
END IF;
END;
END IF;
END;
ELSIF In_Type = 'ShipType'
THEN
IF l_ShipTypeUser = 1
THEN
BEGIN
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM (SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
JOIN t041_shiptypeusers U
ON S.CODE_SHIPTYPE = U.Code_ShipType
AND USERID = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
GROUP BY S.CODE_SHIPTYPE);
RETURN l_str_array;
END;
ELSIF l_CompanyUser = 1
THEN
IF l_UseCompanyHistory = 1 AND In_CompanyHistory = 1
THEN
BEGIN
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM ( SELECT a.VesselType ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
JOIN T62_BRUKER_SELSKAP b
ON a.COMPANY = b.SELSKAPSKODE
AND b.BRUKER = In_UserName
WHERE a.VesselCode = NVL(In_VesselCode,a.VesselCode)
UNION
SELECT a.VesselType ShipCode
, a.VoyageNo VoyageFrom
, a.VoyageNo VoyageTo
FROM PositionBook a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.company = b.SELSKAPSKODE
WHERE a.VesselCode = NVL(In_VesselCode, a.VesselCode)
AND b.SELSKAPSKODE IS NULL
GROUP BY a.VesselType,
a.VoyageNo,
a.VoyageNo);
RETURN l_str_array;
END;
ELSE
BEGIN
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM ( SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
JOIN T62_BRUKER_SELSKAP b
ON S.company = b.SELSKAPSKODE
AND B.BRUKER = In_UserName
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
AND NVL(l_UseCompanyHistory,0) = 0
UNION
SELECT S.CODE_SHIPTYPE ShipCode
, 1 VoyageFrom
, 999999999 VoyageTo
FROM T065_SHIP S
LEFT JOIN T62_BRUKER_SELSKAP b
ON S.company = b.SELSKAPSKODE
WHERE S.SKIPS_KODE = NVL(In_VesselCode, S.SKIPS_KODE)
AND b.SELSKAPSKODE IS NULL);
RETURN l_str_array;
END;
END IF;
END IF;
ELSIF In_Type = 'Company'
THEN
BEGIN
SELECT STR_TYPE(ShipCode,VoyageFrom,VoyageTo)
BULK COLLECT INTO l_str_array
FROM ( SELECT a.SELSKAPSKODE ShipCode
, NULL VoyageFrom
, NULL VoyageTo
FROM Selskap a
JOIN T62_BRUKER_SELSKAP b
ON a.SELSKAPSKODE = b.SELSKAPSKODE
WHERE b.BRUKER = In_UserName
Union All
Select a.SELSKAPSKODE ShipCode
, NULL VoyageFrom
, NULL VoyageTo
From Selskap a
LEFT JOIN T62_BRUKER_SELSKAP b
ON a.SELSKAPSKODE = b.SELSKAPSKODE
Where b.SELSKAPSKODE IS NULL
GROUP BY a.SELSKAPSKODE);
RETURN l_str_array;
END;
END IF;
END IF;
END;please kindly provide me your valuable suggestions
Edited by: ganex27lin on Mar 16, 2011 1:54 AM

Tabular forms based on pipelined functions - can it be done?

Hi there,
Pipelined functions are great, specially when you want to encapsulate the access to tables instead of just SELECTing from them (what I am doing a lot in my current project.)
However Apex 4 does not like them, at least not for tabular forms...
I want to handle myself the update/insert/delete process, so I don't need the MRU default functionality (all the access to the data is via APIs). But at the same time I want to just SELECT from my pipelined function and set the item types using the builder interface as with any tabular form (without having to use the apex_item API). Also I want to be able to use tabular form validation.
To start with, you can only create a tabular form based on a table or view. To overcome this issue, I created a dummy view with the fields I wanted and created my tabular form on it. Then I changed the FROM clause to FROM TABLE(myfunction). It didn't work as it seems it tries to select the ROWID for each row... Of course my pipelined function doesn't return one but I don't need one anyway as I will be doing the data manipulation myself based on the PK.
For this to work, I had to create a collection, populate it with the result of the pipelined function in a page process every time the page is loaded, create a view on that collection and base the tabular form on the view... A lot of work and overhead for something that should be very simple in principle.
Then, I found out that if I remove the default MRU process that is automatically created, the tabular form validations stop working (as I posted in another thread). So I have to leave a "dummy" MRU process there with condition = never for it to work.
The application I am working on is all based on API calls and pipelined functions so all this work has to be repeated for each tabular form that is needed.
If it was possible to base a tabular form directly on a pipelined function it would be such an elegant solution.
Is there a better way to implement this? Shouldn't Apex be more compatible with pipelined functions? (at least in regards to tabular forms, they work well with normal forms, reports, LOVs etc)
Thanks
Luis

As I mentioned before, I don't handle inserts (well, I cheat).... On my page, there is a form to set up a request - prompts for a few things, and when submitted, calls a stored procedure:
:P2_REQUEST_RESULT := Simon.Apex_Campus_Guest.Setup_Request(:P2_GROUP_NAME,
       :P2_COAS_ORGN, :P2_START_DATE, :P2_END_DATE, :P2_Quantity, :P2_Generic_Names);
Which creates an APEX collection, which in turn is made visible via a pipelined function turned into a view:
create or replace view Apex_Campus_Guest_Request_va as
select seq_no,
        user_name,
       group_name,
        comments
from table ( Apex_Campus_Guest.Request_Result )
I have a second region which is tabular form on a query - conditional on select 1 from Simon.apex_campus_guest_request_va (the view defined above).
When this submitted, I have standard MRU and MRD processes (Seq_No is the primary key). This then runs into the appropriate trigger - the update trigger is as follows:
trigger Apex_Campus_Guest_Req_Upd
instead of update on Apex_Campus_Guest_Request_va
for each row
declare
        cg_rec campus_guest_maint.rec;
begin
        cg_rec := Campus_Guest_Maint.Request(
                        name => :new.user_name,
                        group_name => :new.group_name,
                        comments => :new.comments);
end;I don't know off hand why it isn't asking for a rowid - but may be that I specified a PKEY column. The insert case fails, as it tries to add a "Returning" statement in the original select. I actually find that annoying as a function is defined to allocate the PKEY from a sequence, so it doesn't need to ask for it that way.

Select on a view containing a function

Hi,
I have a problem with my production user (LABO): he's trying to access a view on another schema ( METAP ). This view use a function on another schema ( APPDATA ).
The view:
CREATE OR REPLACE VIEW metap.foreg_best AS
select
TX, TN, TG, WW, WW_1, WW_2, WW_EVOL,
from
FOREG_11REGIONS
where
TIMESTAMP_BEGIN > local_time(SYSDATE)
AND CODE in(6407,6447,6476,6479,6480);
LABO has the right to see the table FOREG_11REGIONS and also the right to execute the function LOCAL_TIME. If labo tries the query, it works, if he access the view with the same query : ORA-01031: insufficient privileges .
When metap select the view, no problem, when I do( with DBA role), no problem.
I've already tried a grant execute on appdata.local_time to labo, but it doesn't change anything.
Thanks for your help.

Thank you so much Yoann !!
I have to admit I didn't had enough read what is " with grant option": I swear I'll read more about it in the next days.
Thank you for the quick answer !
Stephane.

Pipelined function in reports6i....1

Hi,
i have a problem with using pipelined function in
reports6i.
can i use pipelined function in reports6i.
The following code is used to return rows
based on the parameter i am passing:
my package declaration and body is as follows:
PACKAGE P_RET_ARRAY IS
TYPE array1 AS TABLE OF NUMBER;
FUNCTION ret_array(str VARCHAR2)
RETURN ARRAY1 PIPELINED;
END;
PACKAGE BODY P_RET_ARRAY IS
FUNCTION ret_array(str VARCHAR2)
RETURN ARRAY1 pipelined
IS
str1 VARCHAR2(100);
num1 NUMBER(5);
BEGIN
str1 := str ||',';
WHILE LENGTH(str1)>=0
LOOP
num1 := TO_NUMBER(SUBSTR(str1,1,INSTR(str1,',',1)-1));
pipe (num1);
str1 := SUBSTR(str1,INSTR(str1,',',1)+1);
END LOOP;
--NULL;
RETURN ;
END;
END;
I got the above piece of code from one of the oracle forums:
now if i am trying to use this code in my reports6i it's not recognizing
pipelined.any suggestions plz .
it's urgent....

Hi,
i have a problem with using pipelined function in
reports6i.
can i use pipelined function in reports6i.
The following code is used to return rows
based on the parameter i am passing:
my package declaration and body is as follows:
PACKAGE P_RET_ARRAY IS
TYPE array1 AS TABLE OF NUMBER;
FUNCTION ret_array(str VARCHAR2)
RETURN ARRAY1 PIPELINED;
END;
PACKAGE BODY P_RET_ARRAY IS
FUNCTION ret_array(str VARCHAR2)
RETURN ARRAY1 pipelined
IS
str1 VARCHAR2(100);
num1 NUMBER(5);
BEGIN
str1 := str ||',';
WHILE LENGTH(str1)>=0
LOOP
num1 := TO_NUMBER(SUBSTR(str1,1,INSTR(str1,',',1)-1));
pipe (num1);
str1 := SUBSTR(str1,INSTR(str1,',',1)+1);
END LOOP;
--NULL;
RETURN ;
END;
END;
I got the above piece of code from one of the oracle forums:
now if i am trying to use this code in my reports6i it's not recognizing
pipelined.any suggestions plz .
it's urgent....

Error in Viewing BPEL Xpth Functions

I have BPEL Process Manager in my PC. I wanted to view BPEL XPath Functions by typing http://localhost:9700/BPELConsole/domain.jsp?mode=XPath as suggested in BPEL Process Manager Developer's Guide (Part No. B14448-01).
But it is throwing the following message:
Oracle BPEL Process Manager Full Cycle
An unexpected error has occurred while executing your request. This is most likely related to a defect in the Oracle BPEL Process Manager product. We apologize you can post the error to the OTN forum and we will get back to you as soon as possible.
Attachments:
Build Information:
Oracle BPEL Server version 10.1.2.0.0
Build: 1442
Build time: Fri Apr 29 16:59:32 PDT 2005
Build type: release
Source tag: BPELPM_10_1_2_release_branch
Exception Message:
[java.lang.Exception]
Invalid Login. Domain not specified.
Exception Trace:
java.lang.Exception: Invalid Login. Domain not specified.
     at com.collaxa.cube.fe.util.ServletUtils.getLocator(ServletUtils.java:80)
     at domain.jspService(_domain.java:69)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:347)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at com.collaxa.cube.fe.DomainFilter.doFilter(DomainFilter.java:89)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:649)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
Help needed as to where it went wrong

Hi Nilay,
Please follow the following steps.
1. Open a browser window.
2. Open the BPELConsole in this window.
3. click on the Manage BPEL Domain link on right hand top corner.
4. Click on XPath Library link on this page.
or try the following URL
http://localhost:9700/BPELConsole/<domain_name>/domain.jsp?mode=XPath
or
http://localhost:9700/BPELConsole/default/domain.jsp?mode=XPath
There seem to be a typo in the Developer's guide.
Dhaval

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