备份脚本：

oracle备份fullbak.sh 脚本

. /u01/prod/db/12.1.0/PROD_erpdbp.env

LOGDATE="`date '+%Y%m%d'`"

#delete backup logfile

find /u01/backup/log -mtime +360 |xargs rm -f

rman target / cmdfile=/u01/backup/scripts/fullbak.rman log=/u01/backup/log/fullbak_$LOGDATE.log

rman备份脚本fullbak.rman：

run{
sql 'alter system archive log current';
      allocate channel ch1 type disk;
      allocate channel ch2 type disk;
      allocate channel ch3 type disk;
      backup as compressed backupset incremental level 0 database format '/u01/backup/data/db_%d_%T_%U.bak' plus archivelog format '/u01/backup/data/arch_%d_%T_%U.bak' delete all input; 
      CONFIGURE CONTROLFILE AUTOBACKUP on; 
      release channel ch1;
      release channel ch2;
      release channel ch3;
crosscheck backup;
crosscheck archivelog all;
delete noprompt expired backup;
delete expired archivelog all;
report obsolete;
delete noprompt obsolete;
}

RMAN 还原：

查看oracle的控制文件备份信息：

list backup of controlfile;

用rman恢复数据：

1，startup nomount;
 2，set dbid= 365215955;
 3，restore controlfile from '/u01/bak/db_PROD_20190807_41u8j1iv_1_1.bak';
 4，startup mount;
5，catalog start with '/u01/bak/';
 6，restore database
 7，recover database;
 8，alter database open resetlogs;

365215955

recover database until scn 5971330707288;

create undo tablespace undotb2 datafile '/u01/prod/db/data/undotb12.dbf' 

size 1024M autoextend on next 10M maxsize 12048M;

提示错误：

ORA-30012: undo tablespace 'UNDOTBS1' does not exist or of wrong type

强制打开数据库：

startup force;

重新创建undo表空间

create undo tablespace undotb2 datafile '/u01/prod/db/data/undotb12.dbf' size 1024M autoextend on next 10M maxsize 12048M

在设置spfile文件

alter system set undo_tablespace=undotb2 scope=spfile;

修改undo的管理模式

alter system set undo_management=auto scope=spfile;

创建undo的表空间文件

create undo tablespace undotb2 datafile '/u01/prod/db/data/undotb12.dbf' size 1024M autoextend on next 10M maxsize 12048M