|
MAXSETSIZE跟MAXPIECESIZE用法 区别：maxpiecesize设置的是备份完成后的备份片大小，对备份整体的大小没有影响，比如一个G的备份完成文件，maxpiecesize设置为100M，最后就会变成10个100M的备份文件。Maxsetsize设置限定的是整体大小，个人认为这个功能比较鸡肋，一般只要没人动，就用不到的。 Maxsetsize的写法： 1. RMAN> configure maxsetsize to 2G;
RMAN> run{ 2> allocate channel c1 device type disk; 3> backup database format='/u01/app/oracle/oradata/Backup/oradb_%d_%s.bak'; 4> release channel c1; 5> }
2. run{ allocate channel c1 device type disk ; backup database maxsetsize 1000M format='/u01/app/oracle/oradata/Backup/oradb_%d_%s_%p.bak'; release channel c1; } 清除maxsetsize的语句：RMAN> CONFIGURE MAXSETSIZE clear; Maxpiecesize的写法： run{ allocate channel c1 device type disk MAXPIECESIZE 100M; backup database format='/u01/app/oracle/oradata/Backup/oradb_%d_%s_%p.bak'; release channel c1; } 然后每个文件都是100M [oracle@orcl Backup]$ ls -lh total 1.2G -rw-r----- 1 oracle oinstall 100M Dec 24 03:01 oradb_ORCL_117_10.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:01 oradb_ORCL_117_11.bak -rw-r----- 1 oracle oinstall 71M Dec 24 03:01 oradb_ORCL_117_12.bak -rw-r----- 1 oracle oinstall 100M Dec 24 02:59 oradb_ORCL_117_1.bak -rw-r----- 1 oracle oinstall 100M Dec 24 02:59 oradb_ORCL_117_2.bak -rw-r----- 1 oracle oinstall 100M Dec 24 02:59 oradb_ORCL_117_3.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_4.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_5.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_6.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_7.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_8.bak -rw-r----- 1 oracle oinstall 100M Dec 24 03:00 oradb_ORCL_117_9.bak -rw-r----- 1 oracle oinstall 9.7M Dec 24 03:01 oradb_ORCL_118_1.bak |
|
|
