$ oerr ora 38760 38760, 00000, "This database instance failed to turn on flashback database" // *Cause: Database flashback is on but this instance failed to //         start generating flashback data. Look in alert log for more //         specif…

ORA-38760: This database instance failed to turn on flashback database  第三篇 第一篇 第二篇 问题现象:      在数据库alert告警日志中看见例如以下信息: Completed: ALTER DATABASE MOUNT Wed Nov 19 04:57:28 2014 alter database open Errors in file /DBSoft/diag/rdbms/woo/woo/trace/woo_or…

ORA-38760: This database instance failed to turn on flashback database 问题背景:        測试数据库运行shutdown immediate,日志里面报错,错误信息为:ORA-19815: WARNING: db_recovery_file_dest_size of 4322230272 bytes is 99.77% used, and has 9814016 remaining bytes available.  …

--===================================== -- Oracle 闪回特性(FLASHBACK DATABASE) --===================================== 闪回技术通常用于快速简单恢复数据库中出现的认为误操作等逻辑错误,从闪回的方式可以分为基于数据库级别闪回.表级别闪回.事务 级别闪回,根据闪回对数据的影响程度又可以分为闪回恢复,闪回查询.闪回恢复将修改数据,闪回点之后的数据将全部丢失.而闪回查询则可 以查询数据被DML的…

Oracle Flashback Database Ensure that the prerequisites described in Prerequisites of Flashback Database are met. To use the FLASHBACK DATABASE command to return your database contents to points in time within the flashback window, your database must…

默认情况数据库的flashback database是关闭的. 启用Flashback Database 步骤:1.配置Flash Recovery Area 检查是否启动了flash recovery area: SQL> show parameter db_recovery_file; --或者是show parameter db_recover; 两个语句执行结果一致. NAME TYPE VALUE ------------------------------------ -------…

一.  Flashback Database 说明 Flashback Database 功能非常类似与 RMAN 的不完全恢复, 它可以把整个数据库回退到过去的某个时点的状态, 这个功能依赖于 Flashback log 日志. 比RMAN 更快速和高效. 因此 Flashback Database 可以看作是不完全恢复的替代技术. 但它也有某些限制:(1)Flashback Database 不能解决 Media Failure, 这种错误 RMAN 恢复仍是唯一选择.(2)如果删除了数据文…

一.打开数据库alert日志,发现有报错 ERROR: failed to establish dependency between database RACDB and diskgroup resource ora.DATA.dg 二.上mos查看(是一个BUG,无害) This error is harmless.It is documented in the  internal Bug 8304720 "ERROR: FAILED TO ESTABLISH DEPENDENCY BETWE…

摘自:http://dbtricks.com/?p=34 If you are trying to connect to the Oracle enterprise Manger and you get the following errors: Enterprise Manager is not able to connect to the database instance. And in the “Agent connection to instance” section: Status:…

今天一个同事说在一个生产库执行某个存储过程,遇到了错误: Fatal error 605 occurred at jul 29 2014 我试着执行该存储过程,结果出现下面错误,每次执行该存储过程,得到的错误内容都不一样(page变化,还有就是allocation unit)变化 消息 605,级别 21,状态 3,过程 usp_xxxxxxxxx,第 228 行 Attempt to fetch logical page (7:121808) in database 2 failed. It…