database startup. Memory will be allocated even if we don't plan to create restore point later.
it might take minutes to damage a database but hours to recover. Correcting an error takes about as long as it took to make it with Flashback. In addition, the time required to recover from this error is not dependent on the database size, a capability unique to the Oracle Database. ...
1. Flashback Query in Oracle 9i(参考Adrian Billington的Flashback Query in Oracle 9i) Flashback query 在9.1 和9.2还是有点区别的,9.1的用法比较繁琐,不方便,9.2改进了许多。 (1) 应用flashback query的先决条件 undo_management = auto(在参数文件pfile/spfile中设置) undo_retention = n( n是个正整数,...
Oracle Database 19c プライマリ・データベースでリストア・ポイントを作成すると、自動的にスタンバイ・データベースに伝播され、対応するリストア・ポイントがスタンバイ・データベースに作成されます。 Oracle Data Guard構成のプライマリ・データベースとスタンバイ・データベ...
oracle之三闪回flashback 闪回flashback 5.1 flashback 的功能:1)利用undo data回溯或撤销提交的数据,2)flashback log 使database 可以恢复到过去某个时间点,可以作为不完恢复的补充。 5.2 flashback分类:(PPT-II-253) 1)flashback drop 2)flashback query (新添flashback database archive)...
Filed under:19c,DataPump,flashback,GoldenGate— mdinh @ 1:07 am I am working on improving Instantiating Oracle Golden Gate with an Initial Load using Datapump. There are billions of rows and last import time was 11:18:20 hours with 102 errors ignored. ...
Use the FLASHBACK TABLE statement to restore an earlier state of a table in the event of human or application error. The time in the past to which the table can be flashed back is dependent on the amount of undo data in the system. Also, Oracle Database cannot restore a table to an...
Oracle Database - Enterprise Edition – 版本 10.2.0.4 到 11.1.0.7 [Release 10.2 到 11.1] 本文信息适用于任何平台。 目的 本文介绍了如何使用闪回数据库从一个DROP TABLESPACE语句中恢复。 范围 要使用闪回数据库从DROP TABLESPACE中恢复,必须满足以下条件: ...
ORACLE instance started. Total System Global Area 1874841600 bytes Fixed Size 1337268 bytes Variable Size 1073743948 bytes Database Buffers 788529152 bytes Redo Buffers 11231232 bytes Database mounted. SQL> flashback database to restore point aa; ...
1)restore point no guarantee flashback database 1@@@prepare SQL> create table fb_rp(a number); Table created. SQL> create restore point fb_rp1; Restore point created. SQL> select GUARANTEE_FLASHBACK_DATABASE,SCN,TIME from v$restore_point; GUA...