Oracle RMAN备份深入解析--联机备份

Oracle RMAN备份深入解析--联机备份，开始执行实际的数据库备份操作，此时会发生一次日志切换（alter system archivelog current

rman> backup database plus archivelog;

此命令将触发以下操作：

1、首先，进程使用alter system archivelog current命令完成了日志切换操作。

2、进程将现存所有归档重做日志备份

3、开始执行实际的数据库备份操作，此时会发生一次日志切换（alter system archivelog current），同时RMAN备份剩余的归档重做日志（使用backup archivelog all命令）。

4、执行控制文件和服务器参数文件的自动备份操作。

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RMAN 配置归档日志删除策略

Oracle基础教程之通过RMAN复制数据库

RMAN备份策略制定参考内容

RMAN备份学习笔记

Oracle数据库备份加密 RMAN加密

Linux-6-64下安装Oracle 12C笔记

在CentOS 6.4下安装Oracle 11gR2(x64)

Oracle 11gR2 在VMWare虚拟机中安装步骤

Debian 下 安装 Oracle 11g XE R2

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案例：

1、查看备份前的日志信息

17:13:50 SYS@ prod>select group#,sequence#,thread#,status from v$log;

    GROUP#  SEQUENCE#    THREAD# STATUS

---------- ---------- ---------- ----------------

        1        16          1 CURRENT

        2        14          1 INACTIVE

        3        15          1 INACTIVE

Elapsed: 00:00:00.05

2、执行备份

RMAN> backup database plus archivelog;

Starting backup at 03-JUL-14

current log archived

using channel ORA_DISK_1

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=13 RECID=41 STAMP=851966028

input archived log thread=1 sequence=14 RECID=42 STAMP=851966028

input archived log thread=1 sequence=15 RECID=43 STAMP=851966030

input archived log thread=1 sequence=16 RECID=44 STAMP=851966141

channel ORA_DISK_1: starting piece 1 at 03-JUL-14

channel ORA_DISK_1: finished piece 1 at 03-JUL-14

piece handle=/u01/app/oracle/product/11.2.0/db_1/dbs/0kpcfu5t_1_1 tag=TAG20140703T171541 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:04

Finished backup at 03-JUL-14

Starting backup at 03-JUL-14

using channel ORA_DISK_1

channel ORA_DISK_1: starting full datafile backup set

channel ORA_DISK_1: specifying datafile(s) in backup set

input datafile file number=00001 name=/u01/app/oracle/oradata/prod/system01.dbf

input datafile file number=00002 name=/u01/app/oracle/oradata/prod/sysaux01.dbf

input datafile file number=00008 name=/u01/app/oracle/oradata/prod/perftbs01.dbf

input datafile file number=00004 name=/u01/app/oracle/oradata/prod/users01.dbf

input datafile file number=00005 name=/u01/app/oracle/oradata/prod/example01.dbf

input datafile file number=00007 name=/u01/app/oracle/oradata/prod/undotbs2.dbf

input datafile file number=00006 name=/u01/app/oracle/oradata/prod/tbs1.dbf

input datafile file number=00003 name=/u01/app/oracle/oradata/prod/undotbs1.dbf

channel ORA_DISK_1: starting piece 1 at 03-JUL-14

channel ORA_DISK_1: finished piece 1 at 03-JUL-14

piece handle=/u01/app/oracle/product/11.2.0/db_1/dbs/0lpcfu61_1_1 tag=TAG20140703T171545 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:01:26

Finished backup at 03-JUL-14

Starting backup at 03-JUL-14

current log archived

using channel ORA_DISK_1

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=17 RECID=45 STAMP=851966231

channel ORA_DISK_1: starting piece 1 at 03-JUL-14

channel ORA_DISK_1: finished piece 1 at 03-JUL-14

piece handle=/u01/app/oracle/product/11.2.0/db_1/dbs/0mpcfu8o_1_1 tag=TAG20140703T171712 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 03-JUL-14

Starting Control File and SPFILE Autobackup at 03-JUL-14

piece handle=/u01/app/oracle/product/11.2.0/db_1/dbs/c-239333010-20140703-00 comment=NONE

Finished Control File and SPFILE Autobackup at 03-JUL-14

3、查看告警日志

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[oracle@rh6 ~]$ tail -f /u01/app/oracle/diag/rdbms/prod/prod/trace/alert_prod.log

  Current log# 1 seq# 16 mem# 1: /dsk2/oradata/prod/redo01b.log

Thu Jul 03 17:13:50 2014

Archived Log entry 43 added for thread 1 sequence 15 ID 0xfaf1e60 dest 2:

Thu Jul 03 17:15:41 2014

ALTER SYSTEM ARCHIVE LOG

Thu Jul 03 17:15:41 2014

Thread 1 advanced to log sequence 17 (LGWR switch)

  Current log# 2 seq# 17 mem# 0: /dsk1/oradata/prod/redo02a.log

  Current log# 2 seq# 17 mem# 1: /dsk2/oradata/prod/redo02b.log

Archived Log entry 44 added for thread 1 sequence 16 ID 0xfaf1e60 dest 2:

Thu Jul 03 17:17:11 2014

ALTER SYSTEM ARCHIVE LOG

Thu Jul 03 17:17:11 2014

Thread 1 advanced to log sequence 18 (LGWR switch)

  Current log# 3 seq# 18 mem# 0: /dsk1/oradata/prod/redo03a.log

  Current log# 3 seq# 18 mem# 1: /dsk2/oradata/prod/redo03b.log

Archived Log entry 45 added for thread 1 sequence 17 ID 0xfaf1e60 dest 2:

4、备份后的日志切换信息

17:13:56 SYS@ prod>select group#,sequence#,thread#,status from v$log;

    GROUP#  SEQUENCE#    THREAD# STATUS

---------- ---------- ---------- ----------------

        1        16          1 INACTIVE

        2        17          1 ACTIVE

        3        18          1 CURRENT

Elapsed: 00:00:00.01

5、查看备份信息

RMAN> list backup of database;

List of Backup Sets

===================

BS Key  Type LV Size      Device Type Elapsed Time Completion Time

------- ---- -- ---------- ----------- ------------ ---------------

17      Full    1.13G      DISK        00:01:21    03-JUL-14     

        BP Key: 17  Status: AVAILABLE  Compressed: NO  Tag: TAG20140703T171545

        Piece Name: /u01/app/oracle/product/11.2.0/db_1/dbs/0lpcfu61_1_1

  List of Datafiles in backup set 17

  File LV Type Ckp SCN    Ckp Time  Name

  ---- -- ---- ---------- --------- ----

  1      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/system01.dbf

  2      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/sysaux01.dbf

  3      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/undotbs1.dbf

  4      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/users01.dbf

  5      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/example01.dbf

  6      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/tbs1.dbf

  7      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/undotbs2.dbf

  8      Full 2066885    03-JUL-14 /u01/app/oracle/oradata/prod/perftbs01.dbf

RMAN> list backup of archivelog all;

List of Backup Sets

===================

BS Key  Size      Device Type Elapsed Time Completion Time

------- ---------- ----------- ------------ ---------------

16      31.11M    DISK        00:00:01    03-JUL-14     

        BP Key: 16  Status: AVAILABLE  Compressed: NO  Tag: TAG20140703T171541

        Piece Name: /u01/app/oracle/product/11.2.0/db_1/dbs/0kpcfu5t_1_1

  List of Archived Logs in backup set 16

  Thrd Seq    Low SCN    Low Time  Next SCN  Next Time

  ---- ------- ---------- --------- ---------- ---------

  1    13      2051289    03-JUL-14 2066660    03-JUL-14

  1    14      2066660    03-JUL-14 2066663    03-JUL-14

  1    15      2066663    03-JUL-14 2066666    03-JUL-14

  1    16      2066666    03-JUL-14 2066878    03-JUL-14

BS Key  Size      Device Type Elapsed Time Completion Time

------- ---------- ----------- ------------ ---------------

18      104.00K    DISK        00:00:00    03-JUL-14     

        BP Key: 18  Status: AVAILABLE  Compressed: NO  Tag: TAG20140703T171712

        Piece Name: /u01/app/oracle/product/11.2.0/db_1/dbs/0mpcfu8o_1_1

  List of Archived Logs in backup set 18

  Thrd Seq    Low SCN    Low Time  Next SCN  Next Time

  ---- ------- ---------- --------- ---------- ---------

  1    17      2066878    03-JUL-14 2066956    03-JUL-14

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