SAP Archiving
下面简单介绍下对Add-On Table的Archiving。主要就是下面几点：
| 1、 | T-Code:AOBJ,此步很简单只要New一个就好，先不要定义各种参数设置 | |
| 2、 | 此步只要按照某个例子更改其中关键部分即可，同时在Archiving Object中指定对应的程式(图1) | |
| 3、 | Structure&Table Define | 这一步没什么好做的Add-on表通常是和要Archiving的Table结构一致 |
| 4、 | T-Code:SARA，点击Customizing,Cross-Client File Name/Path(如图2) 这一步也还好，注意下路径中的变量(一般是尖括号)，只要在要输入路径的地方用F1就好 | |
| 5、 | 这一步在AOBJ的Customizing Setting中，只要把刚才定义好的写到相应位置就好 另外定义下Archive File Size和Settings for Delete Program，其它的比较高深可以先不定义 |
图2
下面是从网上摘录的一些资料：
（from http://blog.chinaunix.net/u1/59700/article_91302_2.html）
下面谈一下Archiving几大优点。
- 减少数据库的压力，提高系统性能
- 有些数据由于财务审计、税务要求必须保留，不能删除，就只能通过Archiving的形式保留
- 减少备份，恢复，升级的时间
- 节约存储空间
- 可以通过SAP提供的工具访问Archiving的数据
- 由于数据量的减少，从而提高了系统管理效率
SAP Archiving就是为了解决公司业务增长过快，原有数据库中数据海量增长，系统效率降低，而导致业务受到影响等情况的。虽然说现在有BI，可以方便用 来出报表，但是不管出报表速度多快，如果数据量无限膨胀的话，哪个数据库，哪个系统都是吃不消的，所以Archiving还是必须的。
下面是一些在Archving时常用的T-code，总的来说分为数据容量分析和归档具体应用两块。着颜色的几个T-code是几个主要的归档事务。以后的总结中，会慢慢讲解其中一些T-code的应用。
| Transaction Code | Short text | Package |
| | | |
| ACLA | Define Archiving Classes | SARC |
| AOBJ | Archiving object definition | SARC |
| DB15 | Data Archiving: Database Tables | SARC |
| SARA | Archive Administration | SARC |
| SAR_DA_STAT_ANALYSIS | Analysis of DA Statistics | SARC |
| SAR_OBJ_IND_CUS | Cross-Archiving-Obj. Customizing | SARC |
| SAR_SHOW_MONITOR | Data Archiving Monitor | SARC |
| SAR_SYNC_HOME_PATH | Synchornization of Home Paths | SARC |
| | | |
| AS_ADMIN | SAP AS: Administration | SARCIS |
| SARE | Archive Explorer | SARCIS |
| SARI | Archive Information System | SARCIS |
| SARJ | Archive Retrieval Configurato | SARCIS |
上文介绍了一下Archiving，下面来介绍我参与的那个项目。
一般来说Archiving只要Basis去做就可以了，但是由于上线一段时间后客户会做很多的定制和增强，那么原有的Archiving程序就不能再用了，需要重新编写。
Archiving运行界面：
我们需要用T-code: AOBJ来定义一个Archiving Object。其中有四个主要的地方需要ABAPer来参与，Preprocess,Write,Delete,Read，这四个步骤分别代表4个程序， 在AOBJ里需要配置给相应的自定义的Archiving Object。
其中，Archiving Object中需要Write Program, Delete Program, Preprocessing Program等，这三个一般都要重写，其他的视情况而定。Stucture Definition要定义哪些表要Archiving，最好这些表都是相关联的。Customizing Settings,就是定义一些Archive文件的容量，提交的频率等。Read Program就是用来读取已经Archiving数据的程序。其余的就是一些选择性的内容，根据Archiving Object来定。
配置完毕后，用T-code: SARA进行Archiving 就行。
对于这个Archiving Project原来有两个方案，一个针对Oracle数据库的优化软件LiveReorg，另一个是日立的IXOS。介绍一下这各工具：
Oracle数据库应用的大量实施，使数据库碎片重组成为保持应用高性能运行的关键。常规重组方法需要中断应用运行，对企业造成严重的影响。
LiveReorg是一种联机数据库性能优化工具，在不影响关键业务系统运行的情况下，对Oracle数据库进行碎片重组。
LiveReorg 采用了基于日志的复制技术。通过读取Oracle 日志，可以跟踪重组期间发生的用户活动，保证应用系统的数据库保持持续可用的状态。
LiveReorg包括快速、灵活的数据移动选项，支持通过实时和常规方式进行重组。重组过程既可以完全在数据库内，通过 SQL语句来实现，也可以利用该主品的FastCopy功能通过文件系统实现。FastCopy功能可以将数据卸载到文件系统，再利用Oracle的直接 路径技术对其进行重载，这种方式对较大的Long和Long Raw数据类型有很好的支持。
IXOS，是一个文档管理系统，数据是存在光存储器上的，专门用来管理Archiving文档的工具，具有简单好用等特点。
最后，公司选择了IXOS，理由就是简单好用，越是牛比复杂的技术，日后出现问题的概率就越大，维护起来就越麻烦。
由于选择了IXOS，所有有了Archiving项目，才有了机会把Archiving好好搞一遍。
SAP Archiving中对于一些增强过的表及特殊要求，我们要重写一些PreProcessing, Write, Delete, Read等程序。由于PreProcessing就是在Archiving前做一些检查和处理，每个表都有不同。所以下面就举Write, Delete, Read等比较通用的程序。(其实还是按照我之前的方法，把例子看懂了，逻辑清楚了，就可以拿来重用了。不然每次都重头写，不要累死的)。
Write Program
*----------------------------------------------------------------------*
* Program Name: ZKEVINA_WRI
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*
REPORT ZKEVINA_WRI.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Tables
*-----------------------------------------------------------------------
TABLES: ZKEVINA.
*-----------------------------------------------------------------------
* Constants
*-----------------------------------------------------------------------
* data declaration
CONSTANTS: LC_OBJECT TYPE ARCH_OBJ-OBJECT VALUE 'ZKEVIN'.
*-----------------------------------------------------------------------
* Variables
*-----------------------------------------------------------------------
DATA: LV_FILES_CREATE(1) TYPE C,
LV_DELETE_TESTMODE(1) TYPE C,
LV_HANDLE LIKE SY-TABIX,
LV_SESSION_INTERRUPTED(1) TYPE C VALUE ' ',
LV_OBJECT_IDENTIFIER TYPE STRING,
LV_TOTAL_OBJECT_NUMBER TYPE I,
LV_OBJECTS_PROCESSED TYPE I,
LV_PROGRESS_SEND(1) TYPE C.
*-----------------------------------------------------------------------
* Internal Tables and Work Areas
*-----------------------------------------------------------------------
DATA: LS_ZKEVINA LIKE ZKEVINA,
LW_CALLBACK_PARAM TYPE BAL_S_PARM,
* lt_callback_param TYPE bal_t_par,
LT_ZKEVINA LIKE TABLE OF ZKEVINA.
* optional e.g. for the old index solution (ADK index, not
* DATA: lv_data_object_id LIKE arch_idx_s-obj_id.
*$*$----------------------------------------------------------------$*$*
*$*$ Selection Screen $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Selection Screen
*-----------------------------------------------------------------------
* selection criteria and parameters
SELECTION-SCREEN BEGIN OF BLOCK ARCH_ZKEVINA WITH FRAME.
SELECT-OPTIONS: S_ID FOR ZKEVINA-ID,
S_NAME FOR ZKEVINA-NAME.
SELECTION-SCREEN END OF BLOCK ARCH_ZKEVINA.
*-----------------------------------------------------------------------
* At Selection Screen
*-----------------------------------------------------------------------
INCLUDE ARCH_WRITE_PRG_STANDARD2. " flow control
*--------- INITIALIZATION ----------
INITIALIZATION.
PERFORM STANDARD_OPT_WRITEPRG_INIT. " flow contol: frame titel
*--------- AT SELECTION-SCREEN OUTPUT ----------
AT SELECTION-SCREEN OUTPUT.
PERFORM STANDARD_OPT_WRITEPRG_ATOUTPUT USING LC_OBJECT.
" options for start of delete program
*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*
*--------- START-OF-SELECTION ----------
START-OF-SELECTION.
* set parameters for 'ARCHIVE_OPEN_FOR_WRITE' from selection screen
LV_DELETE_TESTMODE = 'X'.
IF P_WRITST = 'X'.
LV_FILES_CREATE = SPACE.
ELSE.
LV_FILES_CREATE = 'X'.
IF P_DELTST IS INITIAL.
LV_DELETE_TESTMODE = SPACE.
ENDIF.
ENDIF.
* select data from the database
SELECT * FROM ZKEVINA INTO TABLE LT_ZKEVINA
WHERE ID IN S_ID AND
NAME IN S_NAME.
LV_TOTAL_OBJECT_NUMBER = SY-DBCNT.
* open a new archiving session to archive data
CALL FUNCTION 'ARCHIVE_OPEN_FOR_WRITE'
EXPORTING
CALL_DELETE_JOB_IN_TEST_MODE = LV_DELETE_TESTMODE
COMMENTS = P_COMENT
CREATE_ARCHIVE_FILE = LV_FILES_CREATE
OBJECT = LC_OBJECT
OUTPUT_SEL_SCREEN_WHEN_DIALOG = ''
IMPORTING
ARCHIVE_HANDLE = LV_HANDLE.
* optional: set call back parameter for object and message details
* lw_callback_param-callback-userexitp = sy-repid.
* lw_callback_param-callback-userexitf = 'CALLBACK_AT_LINE_SELECTION'.
* lw_callback_param-callback-userexitt = space.
* "or:
* lw_callback_param-callback-userexitf = '<name of the function module>'.
* lw_callback_param-callback-userexitt = 'F'.
* init protocoll
CALL FUNCTION 'ARCHIVE_PROTOCOL_INIT'
EXPORTING
I_DETAILPROTOCOL = P_PROT
I_PROTOCOL_OUTPUT = P_PROT_O.
* optional: set call back parameter for object and message details
* I_CALLBACK_PARAMETER = lw_callback_param.
LOOP AT LT_ZKEVINA INTO LS_ZKEVINA.
* if necessary, process checks whether records can be archived or not
* (residence time etc.)
* ...
* get/check records from all dependig/further tables
* SELECT * FROM <depending_table1> INTO TABLE lt_depending_table1
* WHERE ...
* AND ...
* ...
* optional e.g. for the old index solution (ADK index, not
* if possible use
* CONCATENATE sy-mandt ls_sbook-carrid ls_sbook-bookid
* INTO lv_data_object_id.
* initialize a new data object
CALL FUNCTION 'ARCHIVE_NEW_OBJECT'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE.
* object_id = lv_data_object_id. " optional: ADK index
* put data records into ADK's data container
CALL FUNCTION 'ARCHIVE_PUT_RECORD'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
RECORD_STRUCTURE = 'ZKEVINA'
RECORD = LS_ZKEVINA.
* further (depending) records from other tables usually follow
* CALL FUNCTION 'ARCHIVE_PUT_TABLE'
* EXPORTING
* archive_handle = lv_handle
* record_structure = 'DEPENDING_TABLE1'
* TABLES
* table = lt_depending_table1.
* .......
* (or alternatively
* loop at <lt_depending_table1> where ...
* call function 'ARCHIVE_PUT_RECORD' ...
* endloop...)
* write data object into the archive file
CALL FUNCTION 'ARCHIVE_SAVE_OBJECT'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
EXCEPTIONS
TERMINATION_REQUESTED = 1.
IF SY-SUBRC = 1.
LV_SESSION_INTERRUPTED = 'X'.
EXIT.
ENDIF.
* collect protocol messages
CONCATENATE LS_ZKEVINA-ID LS_ZKEVINA-NAME INTO LV_OBJECT_IDENTIFIER SEPARATED BY SPACE.
* optional: parameter needed in order to display object details
* REFRESH lt_callback_param.
* APPEND INITIAL LINE TO lt_callback_param ASSIGNING <lw_param>.
* <lw_param>-parname = '...'.
* <lw_param>-parvalue = '...'.
CALL FUNCTION 'ARCHIVE_PROTOCOL_COLLECT'
EXPORTING
I_OBJECT = LV_OBJECT_IDENTIFIER
I_TEXT = 'Einzelflugbuchung archiviert'(001)
I_MSGTYPE = 1.
* I_CALLBACK_PARAMETER = lt_callback_param[].
LV_OBJECTS_PROCESSED = LV_OBJECTS_PROCESSED + 1.
* send progress indicator
CALL FUNCTION 'PROGRESS_INDICATOR'
EXPORTING
I_TEXT = '&1% (&2 von &3) der Einzelflugbuchungen archiviert'(002)
I_PROCESSED = LV_OBJECTS_PROCESSED
I_TOTAL = LV_TOTAL_OBJECT_NUMBER
IMPORTING
E_PROGRESS_SENT = LV_PROGRESS_SEND.
IF NOT LV_PROGRESS_SEND IS INITIAL.
CALL FUNCTION 'DB_COMMIT'.
ENDIF.
* send progress indicator if all objects are processed
IF LV_OBJECTS_PROCESSED = LV_TOTAL_OBJECT_NUMBER.
CALL FUNCTION 'PROGRESS_INDICATOR'
EXPORTING
I_TEXT = '&1% (&2 von &3) der Einzelflugbuchungen archiviert'(002)
I_PROCESSED = LV_OBJECTS_PROCESSED
I_TOTAL = LV_TOTAL_OBJECT_NUMBER
I_OUTPUT_IMMEDIATELY = 'X'.
ENDIF.
ENDLOOP.
IF LV_SESSION_INTERRUPTED = 'X'.
* This means the last data object has not been saved.
* -> Clean-up and/or update status specific to interrupted sessions,
* but also write a detailed or standard log + close session as usual:
ENDIF.
* create the default spool list
CALL FUNCTION 'ARCHIVE_WRITE_STATISTICS'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE.
* close the archiving session
CALL FUNCTION 'ARCHIVE_CLOSE_FILE'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE.
* write protocol
CALL FUNCTION 'ARCHIVE_PROTOCOL_WRITE'.
*************
* optional - only for online programs with protocol output into the spool:
* show details on chosen object or message
* AT LINE-SELECTION.
* CALL FUNCTION 'ARCHIVE_PROTOCOL_LINE_DETAIL'.
*************
* optional - only for online programs with protocol output into the spool:
* call back for showing details on chosen object
* FORM callback_at_line_selection USING lv_object TYPE string
* lt_param TYPE bal_t_par.
* ...
** !!! if CALL SCREEN is needed, it has to be called in a function module.!!!
*
* ENDFORM.
Delete Program
*----------------------------------------------------------------------*
* Program Name: ZKEVIN_DEL
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*
REPORT ZKEVINA_DEL.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Constants
*-----------------------------------------------------------------------
* data declaration
CONSTANTS: LC_OBJECT LIKE ARCH_OBJ-OBJECT VALUE 'ZKEVIN'.
*-----------------------------------------------------------------------
* Variables
*-----------------------------------------------------------------------
DATA: LV_HANDLE LIKE SY-TABIX,
LV_COMMIT_CNT LIKE ARCH_USR-ARCH_COMIT,
LV_OBJECT_CNT TYPE I,
LV_DELCNT TYPE I,
LV_CNT TYPE I.
DATA: LV_DOCUMENT TYPE ADMI_RUN-DOCUMENT,
LV_ARCHIVE_KEY TYPE ADMI_FILES-ARCHIV_KEY,
LV_OBJECTS_TO_DELETE
*-----------------------------------------------------------------------
* Tables
*-----------------------------------------------------------------------
DATA: LT_ZKEVINA TYPE TABLE OF ZKEVINA,
LT_ZKEVINA_DELETE TYPE TABLE OF ZKEVINA.
*$*$----------------------------------------------------------------$*$*
*$*$ Selection Screen $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* At Selection Screen
*-----------------------------------------------------------------------
*--------- INITIALIZATION ----------
INCLUDE ARCH_DELETE_PRG_STANDARD1. "<<< flow control
INITIALIZATION.
PERFORM STANDARD_OPT_DELETEPRG_INIT. "<<< flow control: frame titel
*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*
START-OF-SELECTION.
* open a new archiving session to delete data
CALL FUNCTION 'ARCHIVE_OPEN_FOR_DELETE'
EXPORTING
OBJECT = LC_OBJECT
TEST_MODE = P_DELTST
IMPORTING
ARCHIVE_HANDLE = LV_HANDLE.
* get Customizing data from the archiving object
CALL FUNCTION 'ARCHIVE_GET_CUSTOMIZING_DATA'
EXPORTING
OBJECT = LC_OBJECT
IMPORTING
COMMIT_COUNT_FOR_DELETE_PRG = LV_COMMIT_CNT.
* get total number of objects to be deleted
CALL FUNCTION 'ARCHIVE_GET_INFORMATION'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
IMPORTING
ARCHIVE_DOCUMENT = LV_DOCUMENT
ARCHIVE_NAME = LV_ARCHIVE_KEY.
SELECT SINGLE OBJ_COUNT FROM ADMI_FILES INTO LV_OBJECTS_TO_DELETE
WHERE DOCUMENT = LV_DOCUMENT
AND ARCHIV_KEY = LV_ARCHIVE_KEY.
* loop to get the next data object from the archive file(s)
CLEAR LV_OBJECT_CNT.
DO.
CALL FUNCTION 'ARCHIVE_GET_NEXT_OBJECT'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
EXCEPTIONS
END_OF_FILE = 01.
IF SY-SUBRC = 1.
EXIT.
ENDIF.
ADD 1 TO LV_OBJECT_CNT.
REFRESH LT_ZKEVINA.
CALL FUNCTION 'ARCHIVE_GET_TABLE'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
RECORD_STRUCTURE = 'ZKEVINA'
ALL_RECORDS_OF_OBJECT = 'X'
TABLES
TABLE = LT_ZKEVINA.
APPEND LINES OF LT_ZKEVINA TO LT_ZKEVINA_DELETE.
* for dependig/further tables
* call function 'ARCHIVE_GET_TABLE'
* exporting
* archive_handle = lv_handle
* record_structure = 'DEPENDING_TABLE1'
* all_records_of_object = 'X'
* tables
* table = lt_depending_table1.
* APPEND LINES OF lt_depending_table1 TO lt_depending_table1_to_del.
* in case of archiving classes
* call function 'ARCHIVE_DELETE_OBJECT_DATA'
* exporting
* archive_handle = lv_handle
IF LV_OBJECT_CNT = LV_COMMIT_CNT.
* delete data (if running in production mode) or simulate deletion (if
* running in test mode) and collect statistics
PERFORM DELETE_FROM_TABLE USING LV_HANDLE
P_DELTST
LV_OBJECT_CNT
LT_ZKEVINA_DELETE.
DESCRIBE TABLE LT_ZKEVINA_DELETE LINES LV_CNT.
ADD LV_OBJECT_CNT TO LV_DELCNT.
CLEAR LV_OBJECT_CNT.
REFRESH LT_ZKEVINA_DELETE.
".. dependig/further tables
ENDIF. " value of commit counter
* send progress indicator
CALL FUNCTION 'PROGRESS_INDICATOR'
EXPORTING
I_TEXT = '&1 (&2 von &3) der Einzelflugbuchungen bearbeitet'(003)
I_PROCESSED = LV_DELCNT
I_TOTAL = LV_OBJECTS_TO_DELETE.
ENDDO.
IF LV_OBJECT_CNT >= 1.
PERFORM DELETE_FROM_TABLE USING LV_HANDLE " deleting last package
P_DELTST
LV_OBJECT_CNT
LT_ZKEVINA_DELETE.
ADD LV_OBJECT_CNT TO LV_DELCNT.
CLEAR LV_OBJECT_CNT.
".. dependig/further tables
ENDIF.
IF LV_DELCNT = LV_OBJECTS_TO_DELETE.
* send progress indicator at the end
CALL FUNCTION 'PROGRESS_INDICATOR'
EXPORTING
I_TEXT = '&1 (&2 von &3) der Einzelflugbuchungen bearbeitet'(003)
I_PROCESSED = LV_DELCNT
I_TOTAL = LV_OBJECTS_TO_DELETE
I_OUTPUT_IMMEDIATELY = 'X'.
ENDIF.
* create statistics list
CALL FUNCTION 'ARCHIVE_WRITE_STATISTICS'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE
STATISTICS_ONLY_PER_FILE = 'X'.
* close the archiving session
CALL FUNCTION 'ARCHIVE_CLOSE_FILE'
EXPORTING
ARCHIVE_HANDLE = LV_HANDLE.
*---------------------------------------------------------------------*
* FORM DELETE_FROM_TABLE *
*---------------------------------------------------------------------*
* --> P_HANDLE ADK handle
* --> P_TESTMODE X = deleting in test mode
* --> P_OBJECT_CNT number of deleted data objects
* --> PT_SBOOK_DELETE records to delete from SBOOK
* --> PT_... records to delete from further tables
*---------------------------------------------------------------------*
FORM DELETE_FROM_TABLE USING VALUE(P_HANDLE) LIKE SY-TABIX
VALUE(P_TESTMODE) LIKE P_DELTST
VALUE(P_OBJECT_CNT) LIKE SY-DBCNT
VALUE(PT_ZKEVINA_DELETE) LIKE LT_ZKEVINA_DELETE.
DATA: LS_STAT_ITAB TYPE ARCH_STAT,
LT_STAT_ITAB TYPE TABLE OF ARCH_STAT,
LT_ZKEVINA_AUX TYPE TABLE OF ZKEVINA, "#EC NEEDED
LV_DBCNT TYPE SY-DBCNT.
REFRESH LT_STAT_ITAB.
IF P_TESTMODE IS INITIAL.
* delete data on DB if running in production mode
DELETE ZKEVINA FROM TABLE PT_ZKEVINA_DELETE. " delete job restartable
LV_DBCNT = SY-DBCNT.
".. dependig/further tables
ELSE.
* select data from DB if running in test mode
SELECT * FROM ZKEVINA INTO TABLE LT_ZKEVINA_AUX
FOR ALL ENTRIES IN PT_ZKEVINA_DELETE
WHERE ID = PT_ZKEVINA_DELETE-ID
AND NAME = PT_ZKEVINA_DELETE-NAME.
LV_DBCNT = SY-DBCNT.
".. dependig/further tables
ENDIF.
LS_STAT_ITAB-TABNAME = ' '.
LS_STAT_ITAB-COUNT = P_OBJECT_CNT.
APPEND LS_STAT_ITAB TO LT_STAT_ITAB.
LS_STAT_ITAB-TABNAME = 'ZKEVINA'.
LS_STAT_ITAB-COUNT = LV_DBCNT.
APPEND LS_STAT_ITAB TO LT_STAT_ITAB.
* provide ADK with statistics data (before every COMMIT WORK!)
CALL FUNCTION 'ARCHIVE_GIVE_STATISTICS'
EXPORTING
ARCHIVE_HANDLE = P_HANDLE
TABLES
TABLE = LT_STAT_ITAB.
COMMIT WORK.
ENDFORM. " DELETE_FROM_TABLE
Read Program
*----------------------------------------------------------------------*
* Program Name: ZKEVINA
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*
REPORT ZKEVINA.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Variables
*-----------------------------------------------------------------------
* data declaration
DATA: HANDLE LIKE SY-TABIX,
BUFFER TYPE ARC_BUFFER,
ZKEVINA_WA LIKE ZKEVINA,
NUMBER_OF_RECORDS_READ TYPE I.
*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*
* open existing archive files
CALL FUNCTION 'ARCHIVE_OPEN_FOR_READ'
EXPORTING
OBJECT = 'ZKEVIN'
IMPORTING
ARCHIVE_HANDLE = HANDLE
EXCEPTIONS
OTHERS = 1.
IF SY-SUBRC <> 0.
WRITE: / 'No file can be accessed'(001).
STOP.
ENDIF.
CLEAR NUMBER_OF_RECORDS_READ.
* loop to get the next data object from the archive file(s)
DO.
CALL FUNCTION 'ARCHIVE_GET_NEXT_OBJECT'
EXPORTING
ARCHIVE_HANDLE = HANDLE
EXCEPTIONS
END_OF_FILE = 1
OTHERS = 2.
IF SY-SUBRC <> 0.
EXIT.
ENDIF.
* get data records from the data container
DO.
CALL FUNCTION 'ARCHIVE_GET_NEXT_RECORD'
EXPORTING
ARCHIVE_HANDLE = HANDLE
IMPORTING
RECORD = BUFFER-SEGMENT
RECORD_STRUCTURE = BUFFER-RNAME
EXCEPTIONS
END_OF_OBJECT = 1
OTHERS = 2.
IF SY-SUBRC <> 0.
EXIT.
ENDIF.
ADD 1 TO NUMBER_OF_RECORDS_READ.
ENDDO.
ENDDO.
WRITE: / 'Total number of records read: '(002), NUMBER_OF_RECORDS_READ.
SKIP.
WRITE / 'Last record read: '(003).
SKIP.
CASE BUFFER-RNAME.
WHEN 'ZKEVINA'.
FIELD-SYMBOLS: <FS1> TYPE X,
<FS2> TYPE X.
ASSIGN ZKEVINA_WA TO <FS1> CASTING.
ASSIGN BUFFER-SEGMENT TO <FS2> CASTING.
<FS1> = <FS2>.
* sbook_wa = buffer-segment.
WRITE: / 'ID :', ZKEVINA_WA-ID,
/ 'NAME :', ZKEVINA_WA-NAME,
/ '...'.
* when ...
* If the archive object contained more than one table
* (different buffer-rname), more cases would be needed.
ENDCASE.
* close the archive session
CALL FUNCTION 'ARCHIVE_CLOSE_FILE'
EXPORTING
ARCHIVE_HANDLE = HANDLE.
你说SAP Archiving的重点和难点是什么？是技术么？显然不是，SAP已经提供了一套相当简便的方法，还有也有很多例子可供参考。有一个很Senior的 BASIS和我说过，BASIS做多了，就成了体力活，我想这句话应该是真的。很多BASIS的活不难，但是很需要熟练度，像这个Archiving的项 目，看上去，主力是BASIS，但实际上，你只要会用几个T-code(DB02,DB15等)和一些DB上的知识，你也行。关键是人家比你更熟练，更精 通，更有经验。
虽说主要任务还是由BASIS和ABAP来承担，但是项目成败的关键还是业务，能对业务准确地分析，多久的数据是可以Archiving的？什么类型的凭证是不能Archiving的？
我要先要把业务搞清楚了，才能往下做，我们当时做的时候就是在这方面花了很大力气。
后面就是BASIS分析好，那些表由于技术上的考虑（DB容量，系统性能等），需要Archiving。最后才是ABAP来进行实现。
可是，一个项目要成功，就需要业务、BASIS、ABAP同事做好才能行。不然，就会导致以下几种情况：
1.业务弄错了，后面都是白做
2.BASIS没分析好，该Archiving的没有做，不该做的倒做了
3.ABAP最后没有把实现好，导致最后数据错误地被Archiving，这个后果也是很严重的！
所以，一个实施好的项目，就是把一系列的做好的事情串联而成的，要重视每一个环节！
由于这边的业务比较复杂，对需要Archiving数据做的处理也就很多。
这里我就要提到架构问题。之前写程序也没考虑到架构问题，因为大家都知道，国内做ABAP开发，程序的规模都不是很大。能在一个程序里写完的，绝对不放在两个程序里搞定。
刚看到把一个程序搞那么复杂时，我真觉得那个美国的架构师是不是闲得没事做了，特意把简单东西复杂化了。
但实则不然。
后来在做项目过程中，慢慢发现，那样架构的优势，真的是很不错，值得国内的一些项目借鉴。下面就先写几点。
先是一个自己写的Archiving Main Menu，User Menu上挂了很多T-code，包括SAP标准的那些Archiving 工具，还有自己定制的一些工具，用起来很方便。
大量使用了function group，主程序代码量相对很少，大量地模块化。注：一个function group是可以共享全局变量的，这样每个function之间就有了联系。
使用了动态调用及Mapping技术，真的很动态，减少很多冗余代码。
......
突然觉得这种东西，还是挺值得写写的。看看人家几百个程序是怎么整合成一个应用的，我后面会慢慢总结，好东西要一口口吃，不然会噎着的。
对之前的Archiving做一下补充
T-code: AOBJ，Customizing Setting里，有一块是’Place File in Storage System’，是将在SAP文件系统中的Archive文件，移送到外围的Storage System中。但是，在我参与的项目中没有使用这个选项，而是由人工去实现移送。
Content Repository需要根据情况自己定义。
T-code
OAC0 定义Content Repository
OAC2 定义Document types
OAC3 定义Content Repository的Link
SM59 定义RFC Destination for Content Sever
SAP官方有详细的介绍：
http://help.sap.com/saphelp_47x200/helpdata/en/8d/3e4ef6462a11d189000000e8323d3a/frameset.htm
T-code SARI，这是对Archiving后的数据进行浏览使用的。
进入SARI界面后Customizing->Environment->Field Catalogs 定义与Archiving data相应的Field Catalogs->回到Customizing界面，建立Archive Infostructure->回到SARI界面，Status->Status Per Archive/Status Per Infostructure->Fill Structures->SARI界面，Archive Explorer->输入相应的选择条件，就能查询到相关Archived数据->回到SARI界面，Status->Status Per Archive/Status Per Infostructure->Delete Structures->完成一次Archive Data Explorer。
将一个功能或者模块的开发放在一个Package里，这是一个习惯。就如，我们把SAP Archiving中所有的字典对象，类，程序等都会放在一个Package里。国内有些项目放得很随意，有根据开发人员分Package的，有分得很宽泛的，更有甚者随便拿了个Package就可以你放，以为只要能传输就可以了……但是为了方便项目的管理和维护，我觉得还是以项目为单位比较好。特别是当一个公司模块很多，错综复杂的时候，这样分更易维护和升级。
关于用Function Group的好处。前面提到要把一个项目相关的开发都要放到一个Package以便维护，这里有一个更进一步的，就是把相关联的Function都放到一个Function Group里，因为这样可以共享全局的参数，而且方便管理。
可以用以下路径访问到Function的Function Pool: se37->function名->Goto->Global Data/MainProgram
Global Data是全局有效的，Function之间是共享的。比如一个程序调用一个function group里的两个function，如果这两个function都对一个参数进行了操作，那么这个参数会顺序改变。
如：Global Data: A = 1.
FM1: A = A + 1.
FM2: A = A + 2.
在主程序中Call FM1 : A = 1 + 1 = 2
Call FM2 : A = 2 + 2 = 4
所以使用这种方式写的话，要当心全局变量的赋值。
之前说过一个Main Menu的架构，虽然实现难度不是很大，但是却可以省去用户很多麻烦。所有的T-code都集中在一个屏幕上，再也不用记那么多繁杂的T-code了。
主要是在Menu Bar里加上相应的T-code和描述，下面是代码的实现。很简单吧！但很实用！
*----------------------------------------------------------------------*
* Program Name: ZARCH_MAINMENU
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*
REPORT ZARCH_MAINMENU.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Variables
*-----------------------------------------------------------------------
DATA: GV_TCODE LIKE SY-TCODE.
*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*
*--------- START-OF-SELECTION ----------
START-OF-SELECTION.
* Empty screen used just to display the GUI status.
CALL SCREEN 001.
*--------- END-OF-SELECTION ----------
END-OF-SELECTION.
*&---------------------------------------------------------------------*
*& Module STATUS_0001 OUTPUT
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
MODULE STATUS_0001 OUTPUT.
* Archiving Area Menu
SET TITLEBAR '001'.
SET PF-STATUS 'ARCHMENU'.
ENDMODULE. " STATUS_0001 OUTPUT
*&---------------------------------------------------------------------*
*& Module USER_COMMAND_0001 INPUT
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
MODULE USER_COMMAND_0001 INPUT.
IF ( SY-UCOMM = 'BACK' ) OR ( SY-UCOMM = 'EXIT' ) OR
( SY-UCOMM = 'CANCEL' ) OR ( SY-UCOMM = 'SE38' ).
LEAVE PROGRAM.
ELSEIF ( SY-UCOMM = SPACE ).
EXIT.
ELSE.
GV_TCODE = SY-UCOMM.
CALL TRANSACTION GV_TCODE.
ENDIF.
ENDMODULE. " USER_COMMAND_0001 INPUT
这里我们聊一下动态调用和Mapping。
作为一个比较大型的应用，动态调用和Mapping是必不可少的，有了这两样法宝，可以减少很多冗余代码，同时也简化日后维护。
下面给一个例子：分两部分，一个是function group，另一个运行用的report
Function pool: SAPLZKEVIN_A
*******************************************************************
* System-defined Include-files. *
*******************************************************************
INCLUDE LZKEVIN_ATOP. " Global Data
INCLUDE LZKEVIN_AUXX. " Function Modules
*******************************************************************
* User-defined Include-files (if necessary). *
*******************************************************************
* INCLUDE LZKEVIN_AF. " Subprograms
* INCLUDE LZKEVIN_AO... " PBO-Modules
* INCLUDE LZKEVIN_AI... " PAI-Modules
INCLUDE LZKEVIN_AF01.
*INCLUDE LZKEVIN_AF02.
INCLUDE LZKEVIN_AF02.
LZKEVIN_AF01
*----------------------------------------------------------------------*
***INCLUDE LZKEVIN_AF01 .
*----------------------------------------------------------------------*
*&---------------------------------------------------------------------*
*& Form CHECK_02
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM CHECK_02 .
WRITE / 'CHECK_02'.
ENDFORM. " CHECK_02
*&---------------------------------------------------------------------*
*& Form CHECK_03
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM CHECK_03 .
WRITE / 'CHECK_03'.
ENDFORM. " CHECK_03
LZKEVIN_AF02
*----------------------------------------------------------------------*
***INCLUDE LZKEVIN_AF02 .
*----------------------------------------------------------------------*
*&---------------------------------------------------------------------*
*& Form CHECK_01
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM CHECK_01 .
WRITE / 'CHECK_01'.
ENDFORM. " CHECK_01
Report
*----------------------------------------------------------------------*
* Program Name: Z_KEVIN_ARCH
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*
REPORT Z_KEVIN_ARCH.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*
*-----------------------------------------------------------------------
* Internal Tables and Work Areas
*-----------------------------------------------------------------------
DATA GS_CHECK TYPE ZCHECK.
DATA GT_CHECK TYPE TABLE OF ZCHECK.
DATA GS_ZKEVINA TYPE ZKEVINA.
DATA GT_ZKEVINA TYPE TABLE OF ZKEVINA.
*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*
SELECT * FROM ZKEVINA
INTO TABLE GT_ZKEVINA
WHERE ID = '1'.
SELECT * FROM ZCHECK
INTO TABLE GT_CHECK.
SORT GT_CHECK BY SEQ.
LOOP AT GT_ZKEVINA INTO GS_ZKEVINA.
READ TABLE GT_CHECK INTO GS_CHECK WITH KEY ID = GS_ZKEVINA-ID.
IF ( SY-SUBRC = 0 ).
LOOP AT GT_CHECK INTO GS_CHECK WHERE ID = GS_ZKEVINA-ID.
PERFORM (GS_CHECK-CHECK_ROUTINE) IN PROGRAM SAPLZKEVIN_A.
ENDLOOP.
ENDIF.
ENDLOOP.
表结构：
ZCHECK
MANDT MANDT CLNT 3 0 Client
ID CHAR 4 0
SEQ NUMC3 NUMC 3 0 Numc3, internal use
CHECK_ROUTINE CHAR30 CHAR 30 0 30 Characters
ZKEVINA
ID CHAR 4 0 ID
NAME CHAR 20 0 Name
