RAC 攻击 - Oracle 集群数据库在家/数据库备份

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RAC 备份和恢复 (e)

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我们将配置备份以充分利用集群，通过并行运行。

配置 RMAN 默认通道和并行性。RMAN> configure device type disk parallelism 2 backup type to compressed backupset; RMAN> configure channel 1 device type disk connect 'sys/racattack@rac1'; RMAN> configure channel 2 device type disk connect 'sys/racattack@rac2'; RMAN> show all;
对整个数据库进行完全热备份。RMAN> backup database plus archivelog; Starting backup at 04-MAY-09 current log archived channel ORA_DISK_1: starting compressed archived log backup set channel ORA_DISK_2: starting compressed archived log backup set ... Finished backup at 04-MAY-09 Starting backup at 04-MAY-09 channel ORA_DISK_1: starting compressed full datafile backup set channel ORA_DISK_2: starting compressed full datafile backup set ... Finished backup at 04-MAY-09 Starting backup at 04-MAY-09 current log archived channel ORA_DISK_1: starting compressed archived log backup set channel ORA_DISK_2: starting compressed archived log backup set ... Finished backup at 04-MAY-09
交叉检查备份。发生了什么，为什么？RMAN> list backupset summary; Key TY LV S Device Type Completion Time #Pieces #Copies Compressed ------- -- -- - ----------- --------------- ------- ------- ---------- 1 B A A DISK 04-MAY-09 1 1 YES 2 B A A DISK 04-MAY-09 1 1 YES 3 B A A DISK 04-MAY-09 1 1 YES 4 B A A DISK 04-MAY-09 1 1 YES 5 B F A DISK 04-MAY-09 1 1 YES 6 B F A DISK 04-MAY-09 1 1 YES 7 B F A DISK 04-MAY-09 1 1 YES 8 B F A DISK 04-MAY-09 1 1 YES 9 B A A DISK 04-MAY-09 1 1 YES 10 B A A DISK 04-MAY-09 1 1 YES RMAN> allocate channel for maintenance device type disk; released channel: ORA_DISK_1 released channel: ORA_DISK_2 allocated channel: ORA_MAINT_DISK_1 channel ORA_MAINT_DISK_1: SID=111 instance=RAC1 device type=DISK RMAN> crosscheck backup; RMAN> list backupset summary;