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在ORACLE 12C中对rman的功能有了不少增强,在以前的文章中写过RMAN RECOVER TABLE功能,这里另外补充rman增强的两个小功能(sql语句和数据文件分割)
数据库版本
SQL> select * from v$version; BANNER CON_ID -------------------------------------------------------------------------------- ---------- Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production 0 PL/SQL Release 12.1.0.1.0 - Production 0 CORE 12.1.0.1.0 Production 0 TNS for Linux: Version 12.1.0.1.0 - Production 0 NLSRTL Version 12.1.0.1.0 - Production 0
rman对sql语句支持增强
[oracle@xifenfei tmp]$ rman target / Recovery Manager: Release 12.1.0.1.0 - Production on Sat Jun 1 14:07:50 2013 Copyright (c) 1982, 2013, Oracle and/or its affiliates. All rights reserved. connected to target database: CDB (DBID=1922813718) RMAN> select sysdate from dual; using target database control file instead of recovery catalog SYSDATE --------- 01-JUN-13 RMAN> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'; Statement processed RMAN> select sysdate from dual; SYSDATE ------------------- 2013-06-01 14:16:48 RMAN> desc v$log Name Null? Type ----------------------------------------- -------- ---------------------------- GROUP# NUMBER THREAD# NUMBER SEQUENCE# NUMBER BYTES NUMBER BLOCKSIZE NUMBER MEMBERS NUMBER ARCHIVED VARCHAR2(3) STATUS VARCHAR2(16) FIRST_CHANGE# NUMBER FIRST_TIME DATE NEXT_CHANGE# NUMBER NEXT_TIME DATE CON_ID NUMBER
这里看到rman只是sql语句中的select和desc用法
rman分割数据文件增强
RMAN> CONFIGURE DEVICE TYPE DISK PARALLELISM 3; old RMAN configuration parameters: CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; new RMAN configuration parameters: CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET; new RMAN configuration parameters are successfully stored RMAN> backup incremental level 1 section size 30M datafile 1 format '/tmp/system_%U.rman'; Starting backup at 01-JUN-13 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=27 device type=DISK allocated channel: ORA_DISK_2 channel ORA_DISK_2: SID=269 device type=DISK allocated channel: ORA_DISK_3 channel ORA_DISK_3: SID=24 device type=DISK no parent backup or copy of datafile 1 found channel ORA_DISK_1: starting incremental level 1 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00001 name=+DATA/cdb/system01.dbf backing up blocks 1 through 3840 channel ORA_DISK_1: starting piece 1 at 01-JUN-13 channel ORA_DISK_2: starting incremental level 1 datafile backup set channel ORA_DISK_2: specifying datafile(s) in backup set input datafile file number=00001 name=+DATA/cdb/system01.dbf …………………… backing up blocks 96001 through 99840 channel ORA_DISK_3: starting piece 26 at 01-JUN-13 channel ORA_DISK_1: finished piece 24 at 01-JUN-13 piece handle=/tmp/system_02ob3pg1_24_1.rman tag=TAG20130601T144518 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:08 channel ORA_DISK_1: starting incremental level 1 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00001 name=+DATA/cdb/system01.dbf backing up blocks 99841 through 101120 channel ORA_DISK_1: starting piece 27 at 01-JUN-13 channel ORA_DISK_2: finished piece 25 at 01-JUN-13 piece handle=/tmp/system_02ob3pg1_25_1.rman tag=TAG20130601T144518 comment=NONE channel ORA_DISK_2: backup set complete, elapsed time: 00:00:07 channel ORA_DISK_3: finished piece 26 at 01-JUN-13 piece handle=/tmp/system_02ob3pg1_26_1.rman tag=TAG20130601T144518 comment=NONE channel ORA_DISK_3: backup set complete, elapsed time: 00:00:06 channel ORA_DISK_1: finished piece 27 at 01-JUN-13 piece handle=/tmp/system_02ob3pg1_27_1.rman tag=TAG20130601T144518 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:07 Finished backup at 01-JUN-13
备份文件情况
[oracle@xifenfei tmp]$ ll -ltr system* -rw-r----- 1 oracle dba 14761984 Jun 1 14:45 system_02ob3pg1_1_1.rman -rw-r----- 1 oracle dba 9535488 Jun 1 14:45 system_02ob3pg1_2_1.rman -rw-r----- 1 oracle dba 16973824 Jun 1 14:45 system_02ob3pg1_4_1.rman -rw-r----- 1 oracle dba 18284544 Jun 1 14:45 system_02ob3pg1_3_1.rman -rw-r----- 1 oracle dba 12804096 Jun 1 14:45 system_02ob3pg1_5_1.rman -rw-r----- 1 oracle dba 29163520 Jun 1 14:45 system_02ob3pg1_6_1.rman -rw-r----- 1 oracle dba 31326208 Jun 1 14:46 system_02ob3pg1_7_1.rman -rw-r----- 1 oracle dba 30851072 Jun 1 14:46 system_02ob3pg1_8_1.rman -rw-r----- 1 oracle dba 30801920 Jun 1 14:46 system_02ob3pg1_9_1.rman -rw-r----- 1 oracle dba 23977984 Jun 1 14:46 system_02ob3pg1_11_1.rman -rw-r----- 1 oracle dba 28508160 Jun 1 14:46 system_02ob3pg1_10_1.rman -rw-r----- 1 oracle dba 30277632 Jun 1 14:46 system_02ob3pg1_12_1.rman -rw-r----- 1 oracle dba 31498240 Jun 1 14:46 system_02ob3pg1_13_1.rman -rw-r----- 1 oracle dba 31498240 Jun 1 14:47 system_02ob3pg1_14_1.rman -rw-r----- 1 oracle dba 31498240 Jun 1 14:47 system_02ob3pg1_15_1.rman -rw-r----- 1 oracle dba 30507008 Jun 1 14:47 system_02ob3pg1_17_1.rman -rw-r----- 1 oracle dba 30834688 Jun 1 14:47 system_02ob3pg1_16_1.rman -rw-r----- 1 oracle dba 31498240 Jun 1 14:47 system_02ob3pg1_18_1.rman -rw-r----- 1 oracle dba 30244864 Jun 1 14:47 system_02ob3pg1_19_1.rman -rw-r----- 1 oracle dba 29016064 Jun 1 14:47 system_02ob3pg1_20_1.rman -rw-r----- 1 oracle dba 29212672 Jun 1 14:47 system_02ob3pg1_21_1.rman -rw-r----- 1 oracle dba 30728192 Jun 1 14:47 system_02ob3pg1_22_1.rman -rw-r----- 1 oracle dba 29384704 Jun 1 14:47 system_02ob3pg1_23_1.rman -rw-r----- 1 oracle dba 26566656 Jun 1 14:47 system_02ob3pg1_24_1.rman -rw-r----- 1 oracle dba 24928256 Jun 1 14:48 system_02ob3pg1_25_1.rman -rw-r----- 1 oracle dba 19324928 Jun 1 14:48 system_02ob3pg1_26_1.rman -rw-r----- 1 oracle dba 6291456 Jun 1 14:48 system_02ob3pg1_27_1.rman
在12C之前的版本，ORACLE 11GR2只是对于全备的备份集备份(非增量,非copy备份方式)方式支持数据文件分割备份功能,对于11.2之前的版本均不支持该功能.在12C中rman可以支持对于全备,增量备份,copy备份全部支持分割数据文件备份(CONTROLFILE,SPFILE不支持)
11g中的rman命令，还无法让增量备份和section size一起使用，看来12c已经可以了。赞一个！
11.2.0.3 支持基于scn的section 备份