在异机实现 Oracle 不完全恢复

Posted 2021-01-16

1、将数据库完全备份集和归档日志备份集传到执行恢复的 Oracle 服务器
# 传到中转服务器

scp -P 2222 database.20181030.5* 218.17.56.50:/tmp/backup
scp -P 2222 archivelog.20181029.5ltgrqir_1_1.rman 218.17.56.50:/tmp/backup
scp -P 2222 archivelog.20181030.* 218.17.56.50:/tmp/backup

# 传到 Oracle 服务器

scp -r backup/ [email protected]:~/

2、注册备份集到控制文件

catalog backuppiece ‘/home/oracle/backup/archivelog.20181029.5ltgrqir_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/archivelog.20181030.5stguer0_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/archivelog.20181030.5ttguer0_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/archivelog.20181030.5utguesp_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/archivelog.20181030.5vtguesr_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/archivelog.20181030.60tgueuk_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/database.20181030.5otgue2k_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/database.20181030.5ptgue2k_1_1.rman‘;
catalog backuppiece ‘/home/oracle/backup/database.20181030.5qtgueid_1_1.rman‘;

3、处理 incarnation (有需要则执行)

shutdown immediate;
startup mount;
list incarnation;
reset database to incarnation 1;

4、执行不完全恢复
# rman 脚本

cat restore.rman 
run {
    shutdown immediate;
    startup mount;
    set until time = "to_date(‘30-10-18 12:00:00‘,‘dd-mm-yy hh24:mi:ss‘)";
    restore database;
    recover database;
    alter database open resetlogs;
}
# 恢复
rman target / @restore.rman

注意：如果恢复报错，检查备份集 Status 是否为 AVAILABLE。如果备份集有效，仍然无法创建数据文件，则从装系统和数据库可解决此问题。