2. Using RMAN 2.1 Configure RMAN options for the PROD database 2.1.1 Turn backup optimization on 2.1.2 Set your default channel to write to /home/oracle/backup (you may have to create this directory ) 2.1.3 Turn on controlfile autobackups
2. Using RMAN 2.1 Configure RMAN options for the PROD database 2.1.1 Turn backup optimization on 2.1.2 Set your default channel to write to /home/oracle/backup (you may have to create this directory ) 2.1.3 Turn on controlfile autobackups to write to /home/oracle/backup/control (you may have to create this directory) 2.1.4 Configure a retention window of 7 days.首先创建两个文件夹 [oracle@ocm1 ~]$ mkdir /home/oracle/backup [oracle@ocm1 ~]$ mkdir /home/oracle/backup/control
按以下操作: RMAN> show all;
RMAN configuration parameters are: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default CONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE MAXSETSIZE TO UNLIMITED; # default CONFIGURE ENCRYPTION FOR DATABASE OFF; # default CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/10.2.0/db_1/dbs/snapcf_PROD.f'; # default
RMAN> CONFIGURE BACKUP OPTIMIZATION ON;
new RMAN configuration parameters: CONFIGURE BACKUP OPTIMIZATION ON; new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/home/oracle/backup/PROD_%U.bak';
new RMAN configuration parameters: CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/home/oracle/backup/PROD_%U.bak'; new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters: CONFIGURE CONTROLFILE AUTOBACKUP ON; new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/home/oracle/backup/control/PROD_%F.ctl';
new RMAN configuration parameters: CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/home/oracle/backup/control/PROD_%F.ctl'; new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
new RMAN configuration parameters: CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS; new RMAN configuration parameters are successfully stored
RMAN> show all;
RMAN configuration parameters are: CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS; CONFIGURE BACKUP OPTIMIZATION ON; CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default CONFIGURE CONTROLFILE AUTOBACKUP ON; CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/home/oracle/backup/control/PROD_%F.ctl'; CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/home/oracle/backup/PROD_%U.bak'; CONFIGURE MAXSETSIZE TO UNLIMITED; # default CONFIGURE ENCRYPTION FOR DATABASE OFF; # default CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/10.2.0/db_1/dbs/snapcf_PROD.f'; # default
RMAN>
2.2 Perform a backup 2.2.1 Perform a backup using your default channel with compression 2.2.2 Include all datafiles in the backup 2.2.3 Include your current control file and spfile 2.2.4 Include all archive logs, then remove the originals. 备份,使用缺省通道,压缩备份,包括所有文件,包括当前的控制文件的spfile文件,包括所有的归档日志,并将原来的归档日志移除。
RMAN> backup as compressed backupset database include current controlfile plus archivelog delete all input;
Starting backup at 21-MAR-14 current log archived allocated channel: ORA_DISK_1 channel ORA_DISK_1: sid=268 devtype=DISK skipping archive log file /u01/app/oracle/oradata/PROD/Disk2/arch/1_6_842523531.dbf; already backed up 1 time(s) skipping archive log file /u01/app/oracle/oradata/PROD/Disk2/arch/1_7_842523531.dbf; already backed up 1 time(s) channel ORA_DISK_1: starting compressed archive log backupset channel ORA_DISK_1: specifying archive log(s) in backup set input archive log thread=1 sequence=8 recid=3 stamp=842717159 input archive log thread=1 sequence=9 recid=4 stamp=842790340 input archive log thread=1 sequence=10 recid=5 stamp=842796122 channel ORA_DISK_1: starting piece 1 at 21-MAR-14 channel ORA_DISK_1: finished piece 1 at 21-MAR-14 piece handle=/home/oracle/backup/PROD_06p3o334_1_1.bak tag=TAG20140321T140208 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:17 channel ORA_DISK_1: deleting archive log(s) archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_8_842523531.dbf recid=3 stamp=842717159 archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_9_842523531.dbf recid=4 stamp=842790340 archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_10_842523531.dbf recid=5 stamp=842796122 channel ORA_DISK_1: deleting archive log(s) archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_6_842523531.dbf recid=1 stamp=842627911 archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_7_842523531.dbf recid=2 stamp=842644301 Finished backup at 21-MAR-14
Starting backup at 21-MAR-14 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed full datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset input datafile fno=00004 name=/u01/app/oracle/oradata/PROD/Disk1/example01.dbf input datafile fno=00001 name=/u01/app/oracle/oradata/PROD/Disk1/system01.dbf input datafile fno=00003 name=/u01/app/oracle/oradata/PROD/Disk1/sysaux01.dbf input datafile fno=00002 name=/u01/app/oracle/oradata/PROD/Disk1/undotbs01.dbf input datafile fno=00007 name=/u01/app/oracle/oradata/PROD/Disk1/users01.dbf input datafile fno=00008 name=/u01/app/oracle/oradata/PROD/Disk1/oltp01.dbf input datafile fno=00005 name=/u01/app/oracle/oradata/PROD/Disk1/indx01.dbf input datafile fno=00006 name=/u01/app/oracle/oradata/PROD/Disk1/tools01.dbf channel ORA_DISK_1: starting piece 1 at 21-MAR-14 channel ORA_DISK_1: finished piece 1 at 21-MAR-14 piece handle=/home/oracle/backup/PROD_07p3o33u_1_1.bak tag=TAG20140321T140235 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:03:39 channel ORA_DISK_1: starting compressed full datafile backupset channel ORA_DISK_1: specifying datafile(s) in backupset including current control file in backupset channel ORA_DISK_1: starting piece 1 at 21-MAR-14 channel ORA_DISK_1: finished piece 1 at 21-MAR-14 piece handle=/home/oracle/backup/PROD_08p3o3aq_1_1.bak tag=TAG20140321T140235 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 21-MAR-14
Starting backup at 21-MAR-14 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed archive log backupset channel ORA_DISK_1: specifying archive log(s) in backup set input archive log thread=1 sequence=11 recid=6 stamp=842796380 channel ORA_DISK_1: starting piece 1 at 21-MAR-14 channel ORA_DISK_1: finished piece 1 at 21-MAR-14 piece handle=/home/oracle/backup/PROD_09p3o3av_1_1.bak tag=TAG20140321T140620 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:05 channel ORA_DISK_1: deleting archive log(s) archive log filename=/u01/app/oracle/oradata/PROD/Disk2/arch/1_11_842523531.dbf recid=6 stamp=842796380 Finished backup at 21-MAR-14
Starting Control File and SPFILE Autobackup at 21-MAR-14 piece handle=/home/oracle/backup/control/PROD_c-254361867-20140321-00.ctl comment=NONE Finished Control File and SPFILE Autobackup at 21-MAR-14
RMAN>

MySQL在数据库和编程中的地位非常重要,它是一个开源的关系型数据库管理系统,广泛应用于各种应用场景。1)MySQL提供高效的数据存储、组织和检索功能,支持Web、移动和企业级系统。2)它使用客户端-服务器架构,支持多种存储引擎和索引优化。3)基本用法包括创建表和插入数据,高级用法涉及多表JOIN和复杂查询。4)常见问题如SQL语法错误和性能问题可以通过EXPLAIN命令和慢查询日志调试。5)性能优化方法包括合理使用索引、优化查询和使用缓存,最佳实践包括使用事务和PreparedStatemen

MySQL适合小型和大型企业。1)小型企业可使用MySQL进行基本数据管理,如存储客户信息。2)大型企业可利用MySQL处理海量数据和复杂业务逻辑,优化查询性能和事务处理。

InnoDB通过Next-KeyLocking机制有效防止幻读。1)Next-KeyLocking结合行锁和间隙锁,锁定记录及其间隙,防止新记录插入。2)在实际应用中,通过优化查询和调整隔离级别,可以减少锁竞争,提高并发性能。

MySQL不是一门编程语言,但其查询语言SQL具备编程语言的特性:1.SQL支持条件判断、循环和变量操作;2.通过存储过程、触发器和函数,用户可以在数据库中执行复杂逻辑操作。

MySQL是一种开源的关系型数据库管理系统,主要用于快速、可靠地存储和检索数据。其工作原理包括客户端请求、查询解析、执行查询和返回结果。使用示例包括创建表、插入和查询数据,以及高级功能如JOIN操作。常见错误涉及SQL语法、数据类型和权限问题,优化建议包括使用索引、优化查询和分表分区。

MySQL是一个开源的关系型数据库管理系统,适用于数据存储、管理、查询和安全。1.它支持多种操作系统,广泛应用于Web应用等领域。2.通过客户端-服务器架构和不同存储引擎,MySQL高效处理数据。3.基本用法包括创建数据库和表,插入、查询和更新数据。4.高级用法涉及复杂查询和存储过程。5.常见错误可通过EXPLAIN语句调试。6.性能优化包括合理使用索引和优化查询语句。

选择MySQL的原因是其性能、可靠性、易用性和社区支持。1.MySQL提供高效的数据存储和检索功能,支持多种数据类型和高级查询操作。2.采用客户端-服务器架构和多种存储引擎,支持事务和查询优化。3.易于使用,支持多种操作系统和编程语言。4.拥有强大的社区支持,提供丰富的资源和解决方案。

InnoDB的锁机制包括共享锁、排他锁、意向锁、记录锁、间隙锁和下一个键锁。1.共享锁允许事务读取数据而不阻止其他事务读取。2.排他锁阻止其他事务读取和修改数据。3.意向锁优化锁效率。4.记录锁锁定索引记录。5.间隙锁锁定索引记录间隙。6.下一个键锁是记录锁和间隙锁的组合,确保数据一致性。


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