Performance issue with ALV Grid in Module Pool

Hi Experts,
I am using an editable ALV Grid on a screen. This ALV does not have too many fields and is called in modal dialog box.
I call this screen from a standard transaction. The problem is this screen is taking 3-4 seconds to load. I checked that fetching the data is not a problem and only after the call screen statement, the processing becomes very slow. Is this due to ALV grid. Please help as this is urgently needed and I cannot change from ALV to table control. Please suggest if anything can b done?
Regards
Satish

Hi Satish,
I hope there is a chance to do the SET_TABLE_FOR_FIRST_DISPLAY or preparation of field catalog earlier, i.e. in INITILIZATION event and then later just exchange table contents before display. That will reduce time.
Regards,
Clemens

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Issue with ALV grid print preview/spool

Hello everyone,
I am working on a report and I am having some issues with ALV grid. Currently in our DEV and QA environments the user can run the report, view the ALV grid, and print the grid without any issues.
However this isn't the case in the Prod environment. The user is able to run the report and view the grid without any issues. But when they click print preview or click print, the spool is incorrect. It shows the proper values from the grid, but the first field is reduced in length. Rather than showing a numeric field of length 10 it shows 99999999# or 99999999...
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I was waiting to hear from the functional team on the matter and no one has mentioned any more issues. I am assuming the problem is solved. I just noticed the thread was still un-answered and wanted to give an update.
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Reg alv grid using module pool programming

Dear Friends,
I have a situation where i am using alv grid in module programming where in when i click the total button in the tool bar for any numeric column, the screen goes for a run time error.
I have giving all conditions such as made the column in the field structure of lvc_field_catalog as do_sum = 'X',
still goes for a dump...can anyone throw some hints to do more or the reason behind this and also have not excluded the function code for this total pushbutton while passing to the method set_table_for_first_display
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hi,
check this up
internal tables
DATA: i_tab TYPE TABLE OF zchangereq,
w_tab TYPE zchangereq.
display field details
DATA: w_field_cat_wa TYPE lvc_s_fcat. " Field Catalog work area
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-020.
PARAMETERS: p_outs RADIOBUTTON GROUP g1,
p_comp RADIOBUTTON GROUP g1.
SELECTION-SCREEN END OF BLOCK b1.
*MACROS
DEFINE add_field.
&1 = FIELDNAME &2 = HEADING &3 = Key field flag
clear w_field_cat_wa.
w_field_cat_wa-fieldname = &1.
lw_field_cat_wa-ref_table = p_ref_table.
lw_field_cat_wa-inttype = p_inttype.
lw_field_cat_wa-decimals = p_decimals.
lw_field_cat_wa-coltext = p_coltext.
lw_field_cat_wa-seltext = p_seltext.
lw_field_cat_wa-do_sum = p_do_sum.
lw_field_cat_wa-no_out = p_no_out.
lw_field_cat_wa-col_pos = p_col_pos.
lw_field_cat_wa-reptext = p_coltext.
lw_field_cat_wa-colddictxt = p_colddictxt.
w_field_cat_wa-scrtext_m = &2.
w_field_cat_wa-key = &3.
append w_field_cat_wa to i_field_cat.
END-OF-DEFINITION.
ALV specific Declarations...........................................
ALV specific Internal table declarations.............................
DATA: i_field_cat TYPE lvc_t_fcat, " Field catalogue
i_alv_sort TYPE lvc_t_sort. " Sort table
ALV variables........................................................
DATA: w_alv_layout TYPE lvc_s_layo, " ALV Layout
w_alv_save TYPE c, " ALV save
w_alv_variant TYPE disvariant. " ALV Variant
ALV Class definitions................................................
CLASS lcl_event_handler DEFINITION.
PUBLIC SECTION.
METHODS: handle_double_click
FOR EVENT double_click OF cl_gui_alv_grid
IMPORTING e_row e_column.
METHODS: handle_hotspot
FOR EVENT hotspot_click OF cl_gui_alv_grid
IMPORTING e_row_id e_column_id.
ENDCLASS. " CLASS LCL_EVENT_HANDLER DEF..
ALV Class implementation............................................
In the Event of a Double Click drill down to the corresponding CHANGE REQUEST
CLASS lcl_event_handler IMPLEMENTATION.
METHOD handle_double_click.
DATA: l_tab LIKE LINE OF i_tab.
CHECK e_row-rowtype(1) EQ space.
READ TABLE i_tab INDEX e_row-index INTO l_tab.
SET PARAMETER ID 'ZTY' FIELD l_tab-ztype.
SET PARAMETER ID 'ZCR' FIELD l_tab-zcref.
CALL TRANSACTION 'ZCRT' AND SKIP FIRST SCREEN.
ENDMETHOD. " HANDLE_DOUBLE_CLICK
not working yet - hotspot seems to stay in the gui!!
METHOD handle_hotspot.
DATA: l_tab LIKE LINE OF i_tab.
CHECK e_row_id-rowtype(1) EQ space.
READ TABLE i_tab INDEX e_row_id-index INTO l_tab.
SET PARAMETER ID 'ZTY' FIELD l_tab-ztype.
SET PARAMETER ID 'ZCR' FIELD l_tab-zcref.
CALL TRANSACTION 'ZCRT' AND SKIP FIRST SCREEN.
ENDMETHOD. " HANDLE_DOUBLE_CLICK
ENDCLASS. " CLASS LCL_EVENT_HANDLER IMPL...
ALV Grid Control definitions........................................
DATA:
ALV Grid Control itself
o_grid TYPE REF TO cl_gui_alv_grid,
Container to hold the ALV Grid Control
o_custom_container TYPE REF TO cl_gui_custom_container,
Event handler (defined in the class above)
o_event_handler TYPE REF TO lcl_event_handler.
INITIALIZATION.
PERFORM create_field_catalogue. " Create ALV Field Catalog
START-OF-SELECTION.
Outstanding requests
IF p_outs = 'X'.
SELECT * FROM zchangereq
INTO TABLE i_tab
WHERE zstatus < 99.
ELSE.
completed requests
SELECT * FROM zchangereq
INTO TABLE i_tab
WHERE zstatus = 99.
ENDIF.
END-OF-SELECTION.
PERFORM list_output_to_alv. " Perform ALV Output operations
FORM LIST_OUTPUT_TO_ALV *
This subroutine is used to call the screen for ALV Output. *
There are no interface parameters to be passed to this subroutine. *
FORM list_output_to_alv.
CALL SCREEN 100.
ENDFORM. " LIST_OUTPUT_TO_ALV
Module STATUS_0100 OUTPUT *
This is the PBO module which will be processed befor displaying the *
ALV Output. *
MODULE status_0100 OUTPUT.
SET PF-STATUS '0100'. " PF Status for ALV Output Screen
IF p_outs = 'X'.
SET TITLEBAR 'STD'.
ELSE.
completed requests
SET TITLEBAR 'COMP'.
ENDIF.
CREATE OBJECT: o_custom_container
EXPORTING container_name = 'SC_GRID',
o_grid
EXPORTING i_parent = o_custom_container.
PERFORM define_alv_layout. " ALV Layout options definitions
PERFORM save_alv_layout_options. " save ALV layout options
PERFORM call_alv_grid. " Call ALV Grid Control
ENDMODULE. " STATUS_0100 OUTPUT
Module USER_COMMAND_0100 INPUT *
This is the PAI module which will be processed when the user performs*
any operation from the ALV output. *
MODULE user_command_0100 INPUT.
CASE sy-ucomm.
WHEN 'EXIT' OR 'BACK' OR 'CANC'.
may need to do this so display is refreshed if other report selected
CALL METHOD o_custom_container->free.
SET SCREEN 0.
ENDCASE.
ENDMODULE. " USER_COMMAND_0100 INPUT
FORM DEFINE_ALV_LAYOUT *
This subroutine is used to Define the ALV layout. *
FORM define_alv_layout .
w_alv_layout-numc_total = 'X'. " Numc total line
w_alv_layout-cwidth_opt = 'X'. " Optimal column width
w_alv_layout-detailinit = 'X'. " Show values that are initial in
" detail list.
w_alv_layout-sel_mode = 'A'. " Column selection mode
w_alv_layout-no_merging = 'X'. " No merging while sorting columns
w_alv_layout-keyhot = 'X'.
ENDFORM. " DEFINE_ALV_LAYOUT
FORM SAVE_ALV_LAYOUT_OPTIONS *
This subroutine is used to Save the ALV layout options. *
FORM save_alv_layout_options.
See the ALV grid control documentation for full list of options
w_alv_save = 'A'.
w_alv_variant-report = sy-repid.
ENDFORM. " SAVE_ALV_LAYOUT_OPTIONS
FORM CALL_ALV_GRID *
This subroutine is used to call ALV Grid control for processing. *
FORM call_alv_grid.
CALL METHOD o_grid->set_table_for_first_display
EXPORTING
is_layout = w_alv_layout
i_save = w_alv_save
is_variant = w_alv_variant
CHANGING
it_outtab = i_tab[]
it_sort = i_alv_sort
it_fieldcatalog = i_field_cat.
Link used Events and Event Handler Methods
CREATE OBJECT o_event_handler.
Set handler o_event_handler->handle_top_of_page for o_grid.
SET HANDLER o_event_handler->handle_double_click FOR o_grid.
ENDFORM. " CALL_ALV_GRID
*& Form create_field_catalogue
set up field catalogue
FORM create_field_catalogue .
Fieldname Heading Key?
*eg add_field 'ZTYPE' 'Type' 'X'.
ENDFORM. " create_field_catalogue

Issue With Search Help in Module Pool

Dear All,
I have an Issue with Search help. I have created a Module Pool Program. In this module pool, User requires the search helps for the fields.
Imagine there are 3 fields on a screen. Field1, field2 and field3.
Field2 entries depends on field1 and field3 entries depends on field1 and field2.
I have created a collective search help. and created the corresponding Ztables to maintain the search help entries.
Now I assigned the same collective search help to both the fields . i.e. field2 and field3. But when i execute the module pool program, and press F4 on these fields , the data shown is write. BUT for the 3rd field, when I select F4, The second field values are transfered to the screen, instead of third field value.
Any Idea will be appreciated .
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Regards,

Did you check the screen field names & search help name? is it identical & unique?
Raja T

Issue with ALV Grid and events

Hi,
I am creating an ALV Grid with fields Matnr,Charg,Labst,Meins. The first three fields are editable and the last (MEINS) is read only.
Now I am trying to fill the MEINS field programmaticly after entering the MATNR and confirm with enter/return.
I think that I have to "overload" the enter event of the alv grid to fill the MEINS everytime when a MATNR was entered. But I don't know how I could implementing this. Could you give me a hint how I could solve this problem?
(The behavior should look like in transaction MIGO)
Thanks

Hi Alex
When you press enter an event is triggerd and function code is filled in sy-ucoom or you can say in ok_code. At that time PAI event occurs. In PAI of that screen you need to check ok_code and load new data in table which you passed to ALV and also refresh the ALV.
data: ok_code like sy-ucomm.
PAI----screen 100
case ok_code.
when 'ENTER'.
select data
and refresh ALV
then again call
funtion to display ALV
Regards
Aditya

F4 help before save - ALV Grid in Module Pool

Hi,
   I am calling an ALV Grid using CL_GUI_A;V_GRID. When I create a new record, I need F4 help for a particular field based on the entries in 2 other fields. Thing is I can't use DATA_CHANGED event coz then I won't be able to display the F4 button. And F4 option doesn't pass the data that has been changed(ER_CHANGED_DATA table). So frustrating. Can anyone help me plz???
Thanks in advance,
Poornima L Nathan

Hi ,
i think you are missing one params while registering your F4 fields..
ls_f4-register   = 'X'.
ls_f4-getbefore = 'X'.
ls_f4-chngeafter = 'X'.
Documentatin of SAP program *BCALV_EDIT_08*
*   1b. If the value range in your f4 help depends on other
*       values of cells that are input enabled, set the
*       GETBEFORE parameter.
now you can use row_indx no to read your internal table
regards
Prabhu
Edited by: Prabhu Peram on Aug 23, 2011 2:11 PM

Printing with ALV Grid

Hi,
I am using ALV List and ALV grid in one of my custom reports.
There is no issue with ALV List when I print the report after running the program.
But when I use ALV Grid , the report runs good and when I try to print the report I get short dump "OBJECTS_NOT_CHARLIKE" in program "LKKBLF99" of the main program "SAPLKKBL".
I am using the function module "REUSE_ALV_GRID_DISPLAY" to run the report using ALV Grid and I get the above short dump when I try to print the report.
Can anyone help me please?
Thanks,
Ashok.

Hai Ashok
Try with the following Code
*& Report ZALV_GRID *
REPORT ZALV_GRID .
TABLES: MARA.
TYPE-POOLS : SLIS.
Data declaration
DATA: BEGIN OF I_MARA OCCURS 0.
 INCLUDE STRUCTURE MARA.
DATA: END OF I_MARA.
DATA: V_REPID LIKE SY-REPID.
selection-screen
SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME.
SELECT-OPTIONS : S_MATNR FOR MARA-MATNR.
PARAMETERS: P_MTART LIKE MARA-MTART DEFAULT 'ROH'.
SELECTION-SCREEN END OF BLOCK B1.
initialisation
INITIALIZATION.
S_MATNR-LOW = '1400'.
S_MATNR-HIGH = '1500'.
APPEND S_MATNR.
V_REPID = SY-REPID.
start-of-selection
START-OF-SELECTION.
SELECT * FROM MARA
 INTO TABLE I_MARA
 WHERE MATNR IN S_MATNR AND
 MTART = P_MTART.
CHECK SY-SUBRC = 0.
end of selection
END-OF-SELECTION.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
I_INTERFACE_CHECK = ' '
I_BYPASSING_BUFFER =
I_BUFFER_ACTIVE = ' '
I_CALLBACK_PROGRAM = ' '
I_CALLBACK_PF_STATUS_SET = ' '
I_CALLBACK_USER_COMMAND = ' '
 I_STRUCTURE_NAME = 'MARA'
IS_LAYOUT =
IT_FIELDCAT =
IT_EXCLUDING =
IT_SPECIAL_GROUPS =
IT_SORT =
IT_FILTER =
IS_SEL_HIDE =
I_DEFAULT = 'X'
I_SAVE = ' '
IS_VARIANT =
IT_EVENTS =
IT_EVENT_EXIT =
IS_PRINT =
IS_REPREP_ID =
I_SCREEN_START_COLUMN = 0
I_SCREEN_START_LINE = 0
I_SCREEN_END_COLUMN = 0
I_SCREEN_END_LINE = 0
IMPORTING
E_EXIT_CAUSED_BY_CALLER =
ES_EXIT_CAUSED_BY_USER =
TABLES
 T_OUTTAB = I_MARA
EXCEPTIONS
PROGRAM_ERROR = 1
OTHERS = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
Thanks & Regards
Sreenivasulu P

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Hello, gurus!
I have a problem with ALV-grid. Sometimes when I call F4 help for a cell, data is inserted in a different cell. And when I call check_changed_data method, my internal table (passed to ALV-control in set_table_for_first_display) does not updates properly. In what can be a problem?
Thanks,
Mikhail

Hi Prabhu,
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REFRESH pt_fieldcat .
CLEAR: ps_layout, ls_fcat.
ls_fcat-fieldname = 'VBELN'.
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* ls_fcat-inttype    = 'C'.
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ls_fcat-outputlen = 9.
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* ls_fcat-datatype   = 'DATS'.
* ls_fcat-inttype    = 'D'.
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CLEAR: ls_fcat.
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        txt1 = text-i02
        txt2 = text-i03
        txt3 = text-i04.
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Edited by: Mikhail Sarychev on Mar 16, 2011 6:41 AM
Edited by: Mikhail Sarychev on Mar 16, 2011 6:49 AM
Edited by: Mikhail Sarychev on Mar 16, 2011 6:49 AM

Handling Double click on a Pop-up screen with ALV Grid

Hello Experts,
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Get selected line
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et_index_rows = lt_rows
et_row_no = lt_rows_no.
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IF sy-subrc EQ 0.
gv_selected = 'X'.
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e_req_id = ls_req-zzrequest_id.
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ENDIF.
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SET SCREEN 0.
ENDIF.
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Am I doing this in the right way? Appreciate quick suggestions. Proper posts will be thoroughly awarded with points.
Thx.
Minni

Put your code into the Event handler Implementation of Double Click which is there in the PAI Module.
Regards,
Naimesh Patel

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 CHECK sy-subrc = 0.
 SORT itab BY (<fs>) DESCENDING.
 CONCATENATE 'WA_STRU' '-' <fs> INTO lv_field .
 ASSIGN (lv_field) TO <fs1>.
 CHECK sy-subrc = 0.
 READ TABLE itab INTO wa_stru INDEX 1 TRANSPORTING (<fs>).
 IF sy-subrc = 0 AND ( NOT <fs1> IS INITIAL ).
 wa_fieldcat-fieldname = wa_components-name.
 wa_fieldcat-seltext_m = wa_components-name.
 APPEND wa_fieldcat TO it_fieldcat.
 CLEAR wa_fieldcat.
 ENDIF.
ENDLOOP.
lv_repid = sy-repid.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
 EXPORTING
 i_callback_program = lv_repid
 it_fieldcat = it_fieldcat[]
 TABLES
 t_outtab = itab[].
ENDIF.

Is there a recommended limit on the number of custom sections and the cells per table so that there are no performance issues with the UI?

Is there a recommended limit on the number of custom sections and the cells per table so that there are no performance issues with the UI?

Thanks Kelly,
The answers would be the following:
1200 cells per custom section (NEW COUNT), and up to 30 custom sections per spec.
Assuming all will be populated, and this would apply to all final material specs in the system which could be ~25% of all material specs.
The cells will be numeric, free text, drop downs, and some calculated numeric.
Are we reaching the limits for UI performance?
Thanks

Performance issues with pipelined table functions

I am testing pipelined table functions to be able to re-use the base_query function. Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? The processor function is from [url http://www.oracle-developer.net/display.php?id=429]improving performance with pipelined table functions .
Edit: The underlying query returns 500,000 rows in about 3 minutes. So there are are no performance issues with the query itself.
Many thanks in advance.
CREATE OR REPLACE PACKAGE pipeline_example
IS
 TYPE resultset_typ IS REF CURSOR;
 TYPE row_typ IS RECORD (colC VARCHAR2(200), colD VARCHAR2(200), colE VARCHAR2(200));
 TYPE table_typ IS TABLE OF row_typ;
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ;
 c_default_limit CONSTANT PLS_INTEGER := 100;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY);
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
END pipeline_example;
CREATE OR REPLACE PACKAGE BODY pipeline_example
IS
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ
 IS
 o_resultset resultset_typ;
 BEGIN
 OPEN o_resultset FOR
 SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB;
 RETURN o_resultset;
 END base_query;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY)
 IS
 aa_source_data table_typ;-- := table_typ ();
 BEGIN
 LOOP
 FETCH p_source_data
 BULK COLLECT INTO aa_source_data
 LIMIT p_limit_size;
 EXIT WHEN aa_source_data.COUNT = 0;
 /* Process the batch of (p_limit_size) records... */
 FOR i IN 1 .. aa_source_data.COUNT
 LOOP
 PIPE ROW (aa_source_data (i));
 END LOOP;
 END LOOP;
 CLOSE p_source_data;
 RETURN;
 END processor;
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT /*+ PARALLEL(t, 5) */ colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN '1' END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM TABLE (processor (base_query (argA, argB),100)) t
 GROUP BY colC
 ORDER BY colC
 END with_pipeline;
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN 1 END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM (SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB)
 GROUP BY colC
 ORDER BY colC;
 END no_pipeline;
END pipeline_example;
ALTER PACKAGE pipeline_example COMPILE;Edited by: Earthlink on Nov 14, 2010 9:47 AM
Edited by: Earthlink on Nov 14, 2010 11:31 AM
Edited by: Earthlink on Nov 14, 2010 11:32 AM
Edited by: Earthlink on Nov 20, 2010 12:04 PM
Edited by: Earthlink on Nov 20, 2010 12:54 PM

Earthlink wrote:
Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? Well, we're missing a lot here.
Like:
- a database version
- how did you test
- what data do you have, how is it distributed, indexed
and so on.
If you want to find out what's going on then use a TRACE with wait events.
All nessecary steps are explained in these threads:
HOW TO: Post a SQL statement tuning request - template posting
http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
Another nice one is RUNSTATS:
http://asktom.oracle.com/pls/asktom/ASKTOM.download_file?p_file=6551378329289980701

Performance issues with Homesharing?

I have a Time Capsule as the base station for my wireless network, then 2 Airport Express setup to extend the network around the house, an iMac i7 as the main iTunes Library and couple of iPads, and a couple of Apple TVs. Everything has the latest software, but I have several performance issues with Home sharing. I've done several tests making sure nothing is taking additional bandwidth, so here are the list of issues:
1) With nothing else running, trying playing a movie via home sharing in an iPad 2 which is located on my iMac, it stops and I have to keep pressing the play button over and over again. I typically see that the iPad tries to download part of the movie first and then starts playing so that it deals with the bandwidth, but in many cases it doesn't.
2) When trying to play any iTunes content (movies, music, photos, etc) from my Apple TV I can see my computer library, but when I go in on any of the menus, it says there's no content. I have to reboot the Apple TV and then problem fixed. I's just annoying that I have to reboot.
3) When watching a Netflix movie on my iPad and with Airplay I send the sound to some speakers via Airplay through an Airport Express. At time I lose the connection to the speakers.
I've complained about Wifi's instability, but here I tried to keep everything with Apples products to avoid any compatibility issues and stay within N wireless technology, which I understood it was much more stable.
Has anyone some suggestions?

Hi,
you should analyze the db after you have loaded the tables.
Do you use sequences to generate PKs? Do you have a lot of indexex and/or triggers on the tables?
If yes:
make sure your sequence caches (alter sequence s cache 10000)
Drop all unneeded indexes while loading and disable trigger if possible.
How big is your Redo Log Buffer? When loading a large amount of data it may be an option to enlarge this buffer.
Do you have more then one DBWR Process? Writing parallel can speed up things when a checkpoint is needed.
Is it possible using a direct load? Or do you already direct load?
Dim

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