闪回3-闪回信息查看

 
1.  版本信息：
SQL> select * from v$version;     2闪回区路径及最大大小 SQL> set linesize 1000 SQL> show parameter db_recover NAME                                 TYPE                   VALUE
------------------------------------ ---------------------- -----------------------------
db_recovery_file_dest                string                 D:/oracle/flash_recovery_area
db_recovery_file_dest_size           big integer            2G
3 闪回区数据保持时间（分钟）SQL> show parameter flash   NAME                                 TYPE                   VALUE
------------------------------------ ---------------------- ------
db_flashback_retention_target        integer                1440
SQL> select 1440/60 hours from dual;        HOURS
----------
        24
4 最早恢复到的事件点SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'; 会话已更改。 SQL> select * from v$flashback_database_log; OLDEST_FLASHBACK_SCN OLDEST_FLASHBACK_TI RETENTION_TARGET FLASHBACK_SIZE ESTIMATED_FLASHBACK_SIZE
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           464604298 2008-03-11 16:51:50             1440        8192000                        0