限制rman消耗太多空间

-以最小负载方式运行RMAN备份

RMAN> run{

backup as backupset duration 00:10 minimize load database current controlfile;

backup duration 00:10 minimize load archivelog all delete all input;

}

--限定通道大小方式运行RMAN备份

RMAN> run{

allocate channel c1 device type disk rate 2m format '/home/oracle/db_%U.bak';

backup as backupset database include current controlfile plus archivelog all delete all input;

release channel c1;

}