【翻譯自mos文章】對於oracle數據庫來說,OGG的抽取進程什麼時候到database中獲取數據?
對於oracle 數據庫來說,OGG的抽取進程什麼時候到database中獲取數據?
參考原文:
When GoldenGate Fetches Data From The Database On Extraction For Oracle (Doc ID 1059583.1)
適用於:
Oracle GoldenGate - Version 4.0.0 and later
Information in this document applies to any platform.
解決方法:
問題:
什麼觸發了OGG的抽取進程到database中獲取數據?
答案:
只有特定的數據類型才會導致從database中獲取數據:
UDT 100% of the time GoldenGate fetches data from the database.
LONG,
LONG RAW,
CLOB,
BLOB Only if the row is chained. Otherwise, the data is captured from the redo log.
可以使用 STATOPTIONS REPORTFETCH 參數來跟蹤抽取進程何時從database中獲取數據
Key Words
Oracle , fetch , STATOPTIONS , REPORTFETCH , UDT , CLOB , BLOB , LOB , LONG