ABAP Select data from SAP table ORASESSION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ORASESSION table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ORASESSION. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ORASESSION table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ORASESSION TYPE STANDARD TABLE OF ORASESSION,
      WA_ORASESSION TYPE ORASESSION,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ORASESSION> TYPE ORASESSION.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ORASESSION.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ORASESSION
  INTO TABLE IT_ORASESSION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ORASESSION
*  INTO TABLE @DATA(IT_ORASESSION2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ORASESSION INDEX 1 INTO DATA(WA_ORASESSION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ORASESSION ASSIGNING <ORASESSION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ORASESSION>-SID = 1.
<ORASESSION>-SPID = 1.
<ORASESSION>-MACHINE = 1.
<ORASESSION>-PROCESS = 1.
<ORASESSION>-STATUS = 1.

ENDLOOP.

LOOP AT IT_ORASESSION INTO WA_ORASESSION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ORASESSION-EVENT, sy-vline,
  WA_ORASESSION-USERNAME, sy-vline,
  WA_ORASESSION-SQL_TEXT, sy-vline,
  WA_ORASESSION-L_READS, sy-vline,
  WA_ORASESSION-P_READS, sy-vline,
  WA_ORASESSION-B_CHANGES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ORASESSION you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ORASESSION TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ORASESSION INTO WA_ORASESSION.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ORASESSION_STR, 
SID TYPE STRING,
SPID TYPE STRING,
MACHINE TYPE STRING,
PROCESS TYPE STRING,
STATUS TYPE STRING,
EVENT TYPE STRING,
USERNAME TYPE STRING,
SQL_TEXT TYPE STRING,
L_READS TYPE STRING,
P_READS TYPE STRING,
B_CHANGES TYPE STRING,
C_CHANGES TYPE STRING,
SEC_WAIT TYPE STRING,
WAIT_TIME TYPE STRING,
P1TEXT TYPE STRING,
P1 TYPE STRING,
P2TEXT TYPE STRING,
P2 TYPE STRING,
P3TEXT TYPE STRING,
P3 TYPE STRING,
TRANS_STATUS TYPE STRING,
START_TIME TYPE STRING,
START_SCNB TYPE STRING,
START_UEXT TYPE STRING,
START_UBAFIL TYPE STRING,
START_UBABLK TYPE STRING,
START_UBASQN TYPE STRING,
START_UBAREC TYPE STRING,
UBAFIL TYPE STRING,
UBABLK TYPE STRING,
UBASQN TYPE STRING,
UBAREC TYPE STRING,
XIDUSN TYPE STRING,
XIDSLOT TYPE STRING,
XIDSQN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ORASESSION_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ORASESSION_STR-SID sy-vline 
WA_ORASESSION_STR-SPID sy-vline 
WA_ORASESSION_STR-MACHINE sy-vline 
WA_ORASESSION_STR-PROCESS sy-vline 
WA_ORASESSION_STR-STATUS sy-vline 
WA_ORASESSION_STR-EVENT sy-vline 
WA_ORASESSION_STR-USERNAME sy-vline 
WA_ORASESSION_STR-SQL_TEXT sy-vline 
WA_ORASESSION_STR-L_READS sy-vline 
WA_ORASESSION_STR-P_READS sy-vline 
WA_ORASESSION_STR-B_CHANGES sy-vline 
WA_ORASESSION_STR-C_CHANGES sy-vline 
WA_ORASESSION_STR-SEC_WAIT sy-vline 
WA_ORASESSION_STR-WAIT_TIME sy-vline 
WA_ORASESSION_STR-P1TEXT sy-vline 
WA_ORASESSION_STR-P1 sy-vline 
WA_ORASESSION_STR-P2TEXT sy-vline 
WA_ORASESSION_STR-P2 sy-vline 
WA_ORASESSION_STR-P3TEXT sy-vline 
WA_ORASESSION_STR-P3 sy-vline 
WA_ORASESSION_STR-TRANS_STATUS sy-vline 
WA_ORASESSION_STR-START_TIME sy-vline 
WA_ORASESSION_STR-START_SCNB sy-vline 
WA_ORASESSION_STR-START_UEXT sy-vline 
WA_ORASESSION_STR-START_UBAFIL sy-vline 
WA_ORASESSION_STR-START_UBABLK sy-vline 
WA_ORASESSION_STR-START_UBASQN sy-vline 
WA_ORASESSION_STR-START_UBAREC sy-vline 
WA_ORASESSION_STR-UBAFIL sy-vline 
WA_ORASESSION_STR-UBABLK sy-vline 
WA_ORASESSION_STR-UBASQN sy-vline 
WA_ORASESSION_STR-UBAREC sy-vline 
WA_ORASESSION_STR-XIDUSN sy-vline 
WA_ORASESSION_STR-XIDSLOT sy-vline 
WA_ORASESSION_STR-XIDSQN sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.