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oracle开启闪回
查看数据库是否是归档模式:SQL>showparameterdb_flashback;NAMETYPEVALUE-----------------------------------------------------------------------------db_flashback_retention_targetinteger1440SQL>archiveloglist;DatabaselogmodeArchiveModeAutomaticarchivalEna..
分类:数据库   时间:2015-10-16 19:10:21    阅读次数:186
ocp-416
QUESTION NO: 416 Which two statements regarding the Flashback Table feature are correct? (Choose two.) A. Flashback Table can be performed on system tables. B. Flashback Table operation does not sh...
分类:其他好文   时间:2015-10-15 11:21:18    阅读次数:136
ocp-289
QUESTION NO: 289 Flashback Database relies on which technologies to recover to a point in time?A. Flashback Data Archive B. Flashback logs in the flash recovery area C. FlashbUndo tablespace D. RMA...
分类:其他好文   时间:2015-10-11 11:40:16    阅读次数:173
ocp-291
QUESTION NO: 291 Which of these are valid Flashback Database recovery point parameters? (Choose all that apply.) A. SCN B. Timestamp C. Named recovery point D. Transaction ID E. Session ID Answ...
分类:其他好文   时间:2015-10-11 11:37:26    阅读次数:155
ocp-293
QUESTION NO: 293 To clean up old records that are in a Flashback Data Archive and are past the retention period, what must the DBA do? A. TRUNCATE the archive table. B. DROP the Flashback Data Arc...
分类:其他好文   时间:2015-10-11 11:36:19    阅读次数:168
ocp-292
QUESTION NO: 292 When setting up the Flashback Data Archive, which of these key parameters are required? (Choose all that apply.) A. Tablespace name B. Storage quota C. Retention D. Table name E...
分类:其他好文   时间:2015-10-11 11:35:15    阅读次数:188
实验-闪回数据库
一、打开闪回数据库1、确保数据库处于归档模式,如果为非归档模式,将数据库转换成归档模式 SQL> select name,log_mode from v$database;NAME LOG_MODE --------- ------------ ORCL NOARCHIVELOG SQL> select flashback_on from v$database; FLASHBAC...
分类:数据库   时间:2015-10-08 21:39:50    阅读次数:267
ORACLE恢复删除表或表记录
一:表的恢复对误删的表,只要没有使用PURGE永久删除选项,那么从FLASHBACK TABLE区恢复回来希望是挺大的。一般步骤有:1、从FLASHBACK TABLE里查询被删除的表SELECT * FROM RECYCLEBIN ORDER BY DROPTIME DESC2.执行表的恢复 F....
分类:数据库   时间:2015-10-08 16:34:02    阅读次数:192
ocp-101
QUESTION NO: 101 Note the output of the following query; SQL> SELECT flashback_archieve_name, status FROM dba_flashback_archieve;FLASHBACK_ARCHIEVE_NAME STATUS FLA1 You executed the following comma...
分类:其他好文   时间:2015-10-05 11:43:55    阅读次数:158
ocp-66
QUESTION NO: 66 Exhibit: View the Exhibit and examine the output. You executed the following command to enable Flashback Data Archive on the EXCHANGE_RATE table: ALTER TABLE exchange_rate FLASHB...
分类:其他好文   时间:2015-10-03 06:09:30    阅读次数:178
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