redo log 中文意思是什麼

redo log 解釋
可以通過事務名在重做日誌
  • redo : vt. （redid; redone ）1. 再做，重做。2. 重新布置[裝飾]。
  • log : n 1 原木，圓木，乾材。2 測程儀，計程儀。3 航海日誌，（飛行員用的）航海日誌；旅行日記。4 〈英國〉...
  1. If any log is waiting in the redo queue, the mirror server finishes rolling forward the mirror database

    如果重做隊列中有任何等待的日誌，則鏡像服務器將完成前滾鏡像數據庫的操作。
  2. Recovering from the loss of the current redo log group

    從當前重做日誌組的丟失中恢復。
  3. During log switch, online redo logs will be archived

    在日誌切換期間，將歸檔聯機重做日誌
  4. Recovering from the loss of one member of an online redo log group

    從丟失的聯機重做日誌組的成員中進行恢復。
  5. Olap for database online redo log

    聯機重做日誌
  6. Olap online redo log

    聯機重做日誌
  7. Online redo log

    聯機重做日誌。
  8. Online redo logs are written round robin manner namely when the last log is full, it will overwrite log 1

    聯機重做日誌以循環的方式進行寫入，也就是當最後一個日誌已滿時，將重寫日誌1 。
  9. Failover time for the database depends on how fast the mirror server can roll forward the log in the redo queue, which, in turn, is determined primarily by the system hardware and the current work load

    數據庫的故障轉移時間取決于鏡像服務器前滾重做隊列中日誌的速度，此速度反過來主要由系統硬體和當前的工作負荷決定。
  10. Performing queries based on actual data values in the redo log files

    在重做日誌文件中執行基於確定值的查詢。
  11. Log writer lgwr writes entries from log buffer to redo the log files

    日誌讀寫器（ lgwr ）從日誌緩沖區寫入項目，以便重做日誌文件。
  12. Extracting the data dictionary into the redo log files

    將數據字典摘取到重做日誌文件中。
  13. Recovering from the loss of an inactive redo log group

    從不活動的重做日誌組的丟失中恢復。
  14. Recovering from the loss of an only active redo log group

    從惟一活動重做日誌組的丟失中恢復。
  15. The entire notion of online backup in oracle is that as users carry out transactions, all changes made to the database, either committed or uncommitted, are stored to the redo log buffer and subsequently are written to the online redo log files by the lgwr process

    在oracle中，聯機備份的全部思想是，當用戶執行事務時，將對數據庫所做的所有更改（提交或未提交的）都存儲到重做日誌緩沖區中，隨後由lgwr進程把它們寫到聯機重做日誌文件中。
  16. To investigate what status is the missing redo log is - a. select from v logfile shows which group is invalid

    要檢查丟失的重做日誌處于什麼狀態a . select * from v $ logfile展示了哪個組是無效的。
  17. To investigate what status is the missing redo log is - select from v logfile shows which group and member is invalid

    要檢查丟失的重做日誌處于什麼狀態select * from v $ logifle顯示哪個組及哪個成員是無效的。
  18. Since the redo log group is inactive and is archived, just clear the redo log - alter database clear logfile group n where n is the group of the lost redo log

    由於重做日誌組是不活動和歸檔的，所以只需清除重做日誌即可alter database clear logfile group n （其中n是丟失的重做日誌的組） 。
  19. Checkpoint ckpt synchronizes the headers of data files and control files with the current redo log and checkpoint numbers

    檢查點（ ckpt ）將數據文件頭和控制文件頭與當前重做日誌和檢查點數同步。
  20. Redo log file

    恢復日誌文件
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