Oracle RMAN備份深入解析--聯機備份，開始執(zhí)行實際的數據庫備份操作，此時會發(fā)生一次日志切換（alter system archivelog current

RMAN> backup database plus archivelog;

此命令將觸發(fā)以下操作：

1、首先，進程使用alter system archivelog current命令完成了日志切換操作。

2、進程將現存所有歸檔重做日志備份

3、開始執(zhí)行實際的數據庫備份操作，此時會發(fā)生一次日志切換（alter system archivelog current），同時RMAN備份剩余的歸檔重做日志（使用backup archivelog all命令）。

4、執(zhí)行控制文件和服務器參數文件的自動備份操作。

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RMAN 配置歸檔日志刪除策略

Oracle基礎教程之通過RMAN復制數據庫

RMAN備份策略制定參考內容

RMAN備份學習筆記

Oracle數據庫備份加密 RMAN加密

Linux-6-64下安裝Oracle 12C筆記

在CentOS 6.4下安裝Oracle 11gR2(x64)

Oracle 11gR2 在VMWare虛擬機中安裝步驟

Debian 下 安裝 Oracle 11g XE R2

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案例：

1、查看備份前的日志信息

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、執(zhí)行備份

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

[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、備份后的日志切換信息

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、查看備份信息

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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