SAP数据库表DDLOG的设计原理
Today when I am reading this SAP help, I find out this sentence:
Then I have opened the definition of table DDLOG in the system and found I cannot directly view the content of field NOTEBOOK due to its data type LRAW.
So I have chosen one table with buffer activated, and made some changes on it.
Since I can only query this table via timestamp, I cannot figure out which entry is for my change on CRMC_PROC_TYPE.
Although I can fetch the content of NOTEBOOK in ABAP code via SELECT *, I do not how to parse this raw data to extract useful information.
So I perform where used list on this table:
Then I have found two useful stuff:
(1) table buffer synchronization monitor
use report RSDBBUF3:
(2) FM SBUF_SEL_DDLOG_RECS to parse content of field DDLOG-NOTEBOOK
I wrote a simple report to use this FM:
DATA: lt_sync_tab TYPE sync_tab_t,
lv_tstamp_from TYPE ddlog-timestamp,
lv_tstamp_to TYPE ddlog-timestamp.
lv_tstamp_from = '20160621061955'.
lv_tstamp_to = '20160623000000'.
CALL FUNCTION 'SBUF_SEL_DDLOG_RECS'
EXPORTING
from_time = lv_tstamp_from
to_time = lv_tstamp_to
max_cnt = 10000
keep_db2_tstmp = 'X'
CHANGING
sync_tab = lt_sync_tab.
SORT lt_sync_tab BY tabname.
Now I can find the corresponding entry for my changes from changing parameter lt_sync_tab by table name:
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