oracle更新脚本把原数据冲了,并且没有备份,急煞我也 解决办法: oracle数据库有闪回功能: select * from tab 可以查出已被删除的表 show recyclebin 显示垃圾桶 FLASHBACK TABLE TABLENAME TO BEFORE DROP 恢复删除的表 PURGE TABLE TABLENAME; 从垃圾桶清除指定的表,此命令将从回收站中删除表及所有相关对象,如索引.约束等. PURGE TABL…
查看是否开启闪回 SQL> select flashback_on from v$database; FLASHBACK_ON ------------------ NO 查看是否配置了db_recover_file_dest SQL> show parameter db_recovery NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_reco…
Flashback Tips The following tips and restrictions apply to using flashback features. Flashback Tips – Performance For better performance, generate statistics on all tables involved in a Flashback Query by using the DBMS_STATS package, and keep the s…