db_block_checksum & db_block_checking
首先看两个参数的定义:DB_BLOCK_CHECKSUMDB_BLOCK_CHECKSUMdetermines whether DBWn and the direct loader will calculate a checksum(a number calculated from all the bytes stored in the block) and store...
rman备份时ORA-19504错误?
在使用RMAN对数据库进行备份时,指定了set limit channel t1 kbytes 1800000;或者CONFIGURE CHANNEL DEVICE TYPE DISK MAXPIECESIZE 100 M;备份format定义为backup database format 'd:/fprsdb_%u_%d_%s.dbf';会...
Oracle联机日志文件丢失或损坏的处理方法(zt)
经验总结: 联机日志分为当前联机日志和非当前联机日志,非当前联机日志的损坏是比较简单的,一般通过clear命令就可以解决问题。 损坏非当前联机日志: 1、启动数据库,遇到ORA-00312 or ORA-00313错误,如...
using backup controlfile和 until cancel 区别(转)
using backup controlfile和 until cancel 区别1. recover database using backup controlfile2. recover database until cancel3. recover database using backup controlfile until cancel;4. recover databas...