oracle tb级别数据量,备份TB级别Oracle数据库的一些技巧
備份TB級別數據的一些技巧
1、 考慮使用增量備份, 不要老是想著用全量備份
2、 對于增量備份而言 開啟block change tracking 能極大地減少物理讀,提升速度
3、 11g以后對于bigfile tablespace可以啟用section size 來提升速度
4、 考慮到負載更低的 Data Guard物理備庫上去做備份
5、 啟用備份并行
CONFIGURE DEVICE TYPE DISK PARALLELISM 16;
6、 對于多節點RAC 使用 service控制負載均衡
srvctl add service –d -s -r -a ,
srvctl add service –d -s -r -a ,
For example
srvctl add service –d maclean –s bkup1 –r maclean1 –a maclean2,maclean3,maclean4,maclean5,maclean6,maclean7,maclean8
srvctl add service –d maclean –s bkup2 –r maclean2 –a maclean1,maclean3,maclean4,maclean5,maclean6,maclean7,maclean8
srvctl add service –d maclean –s bkup3 –r maclean3 –a maclean1,maclean2,maclean4,maclean5,maclean6,maclean7,maclean8
srvctl add service –d maclean –s bkup4 –r maclean4 –a maclean1,maclean2,maclean3,maclean5,maclean6,maclean7,maclean8
srvctl add service –d maclean –s bkup5 –r maclean5 –a maclean1,maclean2,maclean3,maclean4,maclean6,maclean7,maclean8
srvctl add service –d maclean –s bkup6 –r maclean6 –a maclean1,maclean2,maclean3,maclean4,maclean5,maclean7,maclean8
srvctl add service –d maclean –s bkup7 –r maclean7 –a maclean1,maclean2,maclean3,maclean4,maclean5,maclean6,maclean8
srvctl add service –d maclean –s bkup8 –r maclean8 –a maclean1,maclean2,maclean3,maclean4,maclean5,maclean6,maclean7
srvctl start service –d -s
Alternatively, to start all the services for a particular database
srvctl start service –d
run {
allocate channel ch01 connect string ‘sys/@/;
allocate channel ch02 connect string ‘sys/@/;
allocate channel ch16 connect string ‘sys/@/;
backup database …;
}
For example
run
{
allocate channel ch01 device type disk connect 'sys/welcome1@maclean-scan/bkup1';
allocate channel ch02 device type disk connect 'sys/welcome1@maclean-scan/bkup2';
allocate channel ch03 device type disk connect 'sys/welcome1@maclean-scan/bkup3';
allocate channel ch04 device type disk connect 'sys/welcome1@maclean-scan/bkup4';
allocate channel ch05 device type disk connect 'sys/welcome1@maclean-scan/bkup5';
allocate channel ch06 device type disk connect 'sys/welcome1@maclean-scan/bkup6';
allocate channel ch07 device type disk connect 'sys/welcome1@maclean-scan/bkup7';
allocate channel ch08 device type disk connect 'sys/welcome1@maclean-scan/bkup8';
allocate channel ch09 device type disk connect 'sys/welcome1@maclean-scan/bkup1';
allocate channel ch10 device type disk connect 'sys/welcome1@maclean-scan/bkup2';
allocate channel ch09 device type disk connect 'sys/welcome1@maclean-scan/bkup1';
allocate channel ch10 device type disk connect 'sys/welcome1@maclean-scan/bkup2';
allocate channel ch11 device type disk connect 'sys/welcome1@maclean-scan/bkup3';
allocate channel ch12 device type disk connect 'sys/welcome1@maclean-scan/bkup4';
allocate channel ch13 device type disk connect 'sys/welcome1@maclean-scan/bkup5';
allocate channel ch14 device type disk connect 'sys/welcome1@maclean-scan/bkup6';
allocate channel ch15 device type disk connect 'sys/welcome1@maclean-scan/bkup7';
allocate channel ch16 device type disk connect 'sys/welcome1@maclean-scan/bkup8';
backup
as backupset
incremental level 0
section size 128g
database;
}
總結
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